Publikationen

Hier finden sie die Publikationen des Arbeitskreis Niewa

Publikationen ab 2021

278. Y. Ikeda, T. S. Lehmann, M. Widenmeyer, M. Coduri, B. Grabowski, R. Niewa, „Crystal structure and phase stability of Co2N: a combined first principles and experimental study” J. Alloys Comp. 854 (2021) 156341.

279. C. P. Sakthidharan, R. Niewa, D. A. Zherebtsov, F. V. Podgornov, Y. V. Matveychuk, E. V. Bartashevich, S. A. Nayfert, S. A. Adonin, M. V. Gavrilyak, V. A. Boronin, M.A. Polozov, S. Karthikeyan, M. Sarojadevi, K. Rajakumar, P. Prabunathan, „Crystal structures and dielectric properties of 4,4’­dimethyl­6,6’­dichlorothioindigo (Pigment Red 181)” Acta Crystallogr. B 77 (2021) 23.

280. M. Häßner, D. A. Vinnik, R. Niewa, „Structure and Magnetic Properties of a New Hexaferrite (Ba,Pb)(Fe,Ti)9O15” Ceramics Int. 47 (2021) 5341.

281. L. Link, M. Pathak, F. Jach, P. Koželj, A. Ormeci, P. Höhn, R. Niewa,„Die reduzierten Nitridogermanate(III) Ca6[Ge2N6] und Sr6[Ge2N6] mit Ge–Ge-Bindungen” Angew. Chem. 133 (2021) 7769; „The reduced Nitridogermanates(III) Ca6[Ge2N6] and Sr6[Ge2N6] with Ge–Ge Bonds” Angew. Chem. Int. Ed. 60 (2021) 7691.

282. P. Becker, T. B. Cekovski, R. Niewa, „Two Intermediates in Ammonothermal InN Crystal Growth: [In(NH3)5Cl]Cl2 and InF2(NH2)” Z. Anorg. Allg. Chem. 647 (2021) 2006.

283. D. D. Zimmermann, O. Janka, C. Buyer, R. Niewa, Th. Schleid, „Sm5OF5Se4 and Sm5OF5Se4: New Layered Oxide Fluoride Selenides of the Lanthanoids” Solid State Sci. 116 (2021) 106601.

284. S. Bette, T. Theye, H.-J. Bernhardt, W. P. Clark, R. Niewa, „Confirmation of Siderazot, Fe3N1.33, the only terrestrial nitride mineral” Minerals 11 (2021) 290.

285. S. Kunkel, R. Niewa, „Na2La4(NH2)14 · NH3, a lanthanum-rich intermediate in the ammonothermal synthesis of LaN and effect of ammonia loss on the crystal structure” Z. Naturforsch. 76 (2021) 567.

286. P. Wang, K. Küster, U. Starke, C. Liang, R. Niewa, M. R. Buchmeiser, „Performance Enhancement of Rechargeable Magnesium-Sulfur Batteries Based on a Sulfur Poly(acrylonitrile) Composite and a Lithium Salt” Power Sources 515 (2021) 230604.

287. S. Kunkel, K. L. Brinschwitz, T. M. M. Richter, R. Niewa, „Ammonothermal Synthesis and Characterization of First Amidozincate Hydroxides Na3[Zn(NH2)4](OH) and Na3[Zn(NH2)3](OH)2” Eur. J. Inorg. Chem. (2021) 2654.

288. C. Bäucker, S. Bauch, R. Niewa, „Synthesis and characterization of the amidomanganates Rb2[Mn(NH2)4] and Cs2[Mn(NH2)4]” Crystals 11 (2021) 676.

289. P. Becker, T. B. Cekovski, R. Niewa, „Indium Ammoniates from Ammonothermal Synthesis: InAlF6(NH3)2, [In(NH3)6][AlF6] and [In2F(NH3)10]2[SiF6]5 ∙ 2 NH3” Crystals 11 (2021) 679.

290. S. Kunkel, J. Nasir, J. Schmedt auf der Günne, R. Niewa, „Effect of Oxygen on the Ammonothermal Synthesis: Example of Na2[Zn(NH2)4] ∙ (NH3)x and Na2[Zn(NH2)4] ∙ (H2O)x” Eur. J. Inorg. Chem. (2021) 4647.

291. S. Kunkel, J. Grill, R. Niewa, „Ternary rare-earth metal amides Na3RE(NH2)6 (RE = La – Nd, Er, Yb) from ammonothermal synthesis” Z. Naturforsch. im Druck.

292. P. Becker, R. Niewa, „Progress in Ammonothermal Crystal Growth of Indium Nitride” J. Cryst. Growth 581 (2022) 126480.

293. C. Bäucker, P. Becker, K. J. Morell, R. Niewa, „Novel fluoridoaluminates from ammonothermal synthesis: two modifications of K2AlF5 and the elpasolite Rb2KAlF6” Inorganics 10 (2022) 7.

294. H. Cao, C. Pistidda, T. M. M. Richter, G. Capurso, C. Milanese, J.-C. Tseng, Y. Shang, R. Niewa, P. Chen, T. Klassen, M. Dornheim, „Dehydrogenation/rehydrogenation properties and reaction mechanism of AmZn(NH2)n – 2n LiH systems (A = Na and Rb)” Sustainability 14 (2022) 1672.

295. R. U. Stelzer, Y. Ikeda, P. Srinivasan, T. S. Lehmann, B. Grabowski, R. Niewa, „Li5Sn, the Most Lithium-Rich Binary Stannide: A Combined Experimental and Computational Study” J. Am. Chem. Soc. 144 (2022) 7096.

296. L. Link, R. Niewa, „Diversity in Nitridosilicate Chemistry: The Nitridoalumosilicate Ca4(AlSiN5) and the Nitridosilicate Silicide Ca12Si4[SiN4]” Z. Anorg. Allg. Chem. im Druck.

Publikationen 2011 - 2020

138.   T. Basyuk, V. Berezovets, D. Trots, S. Hoffmann, R. Niewa, L. Vasylechko,„Phase diagram of the PrAlO3-GdAlO3 system”, Z. Kristallogr. Proc. 1 (2011) 319.

139.   R. Niewa, L. Shlyk, B. Blaschkowski,„Rare-Earth Metal Transition Metal Borocarbide and Nitridoborate Superconductors”, Z. Kristallogr. 226 (2011) 352.

140.   Ch. M. Schurz, L. Shlyk, Th. Schleid, R. Niewa,„Superconducting Nitride Halides MNX (M = Ti, Zr, Hf; X = Cl, Br, I)”, Z. Kristallogr. 226 (2011) 395.

141.   F. Gäbler, D. Bräunling, W. Schnelle, I. Schellenberg, R. Pöttgen, R. Niewa,„The Inverse Perovskite (Ca2EuNx)Sn: A Rare Example for a Homogeneously Mixed-Valent Compound?”, Z. Anorg. Allg. Chem. 637 (2011) 977.

142.   M. Bischoff, D. Gudat, R. Niewa,„Synthesis and Crystal Structure of Ba2In – How Binary are Binary Phase Diagrams?”, Z. Kristallogr. 226 (2011) 585.

143.   D. Bräunling, R. Niewa,„Ce2[CrN3]: Single Phase Synthesis and Characterization of a Nitridochromate(I)”, Z. Anorg. Allg. Chem. 637 (2011) 1853.

144.   L. Shlyk, R. Niewa,„BaSn6Co6O19 – A Novel Frustrated Antiferromagnet with the Magnetoplumbite Type Structure”, J. Solid State Chem. 184 (2011) 3158.

145.   L. Shlyk, R. Niewa,„Crystal Structure and Magnetic Properties of the Novel Hollandite Ba1.3Co1.3Ti6.7O16”, Z. Naturforsch. 66b (2011) 1097.

146.   A. Senyshyn, H. Boysen, R. Niewa, Y. Burak, V. Adamiv, I. Chumak, H. Fuess,„Crystal structure of Li2B4O7”,Z. Kristallogr. Suppl. 31 (2011) 19.

147.   M. Bischoff, R. Niewa,„Crystal Structure and Thermochemical Classification of Ba2In”, Z. Kristallogr. Suppl. 31 (2011) 88.

148.   L. Shlyk, S. Strobel, E. Rose, R. Niewa,„BaZnRu5O11: Novel Compound with Frustrated Magnetic Lattice Based on Distorted Kagome Networks”, Solid State Sci. 14 (2012) 281.

149.   A. Senyshyn, H. Boysen, R. Niewa, J. Banys, M. Kinka, Ya. Burak, V. Adamiv, F. Izumi, I. Chumak, H. Fuess, „High-temperature properties of lithium tetraborate Li2B4O7”, J. Phys. D: Appl. Phys. 45 (2012) 175305.

150.   A. Leineweber, S. L. Shang, Z. K. Liu, M. Widenmeyer, R. Niewa,„Crystal structure determination of χ-Fe5C2 by first-principles calculations and Rietveld refinement“, Z. Kristallogr. 227 (2012) 207.

151.   L. Shlyk, S. Strobel, Th. Schleid, R. Niewa,„Ruthenate-ferrites AMRu5O11 (A = Sr, Ba; M = Ni, Zn): Distortion of kagome nets via metal–metal bonding”, Z. Kristallogr. 227 (2012) 545.

152.   S. Zhang, D. A. Zherebtsov, F. J. DiSalvo, R. Niewa,„Na5[CN2]2[CN], (Li,Na)5[CN2]2[CN], and K2[CN2]: Carbodiimides from High-Pressure Synthesis”, Z. Anorg. Allg. Chem. 638 (2012) 2111.

153.   C. Lipp, S. Strobel, F. Lissner, R. Niewa,„Garnet-type Mn3Cr2[GeO4]3”, Acta Crystallogr. E 68 (2012) i35.

154.   D. A. Vinnik, D. A. Zherebtsov, S. A. Archugov, M. Bischoff, R. Niewa,„Crystal Growth and Characterization of Alexandrite” Cryst. Growth & Design 12 (2012) 3954.

155.   M. Widenmeyer, R. Niewa,„In situ neutron diffraction in the system Fe–N”, Z. Anorg. Allg. Chem. 638 (2012) 1628.

156.   M. Widenmeyer, R. Niewa,„In situ neutron diffraction in the system V–N”, Z. Anorg. Allg. Chem. 638 (2012) 1629.

157.   M. Bischoff, L. Shlyk, E. Rose, S. Zapf, M. Dressel, R. Niewa,„Sb doped LiFeAs Single Crystals: Crystal Structure and Physical Properties”, Z. Anorg. Allg. Chem. 638 (2012) 1628.

158.   L. Shlyk, M. Bischoff, E. Rose, R. Niewa,„Flux Pinning and Magnetic Relaxation in Ga-doped LiFeAs Single Crystals”, J. Appl. Phys. 112 (2012) 053914.

159.   L. Shlyk, M. Bischoff, R. Niewa,„Influence of Si on superconducting properties of LiFeAs single crystals”,          Supercond. Sci. Technol. 25 (2012) 125006.

160.   K. Guo, D. Rau, L. Toffoletti, C. Müller, U. Burkhardt, W. Schnelle, R. Niewa, U. Schwarz,„The ternary metastable nitrides Fe2TMN (TM = Co, Ni): high-pressure high-temperature synthesis, crystal structure, thermal stability and magnetic properties”, Chem. Mater. 24 (2012) 4600.

161.   S. Zhang, R. Niewa,„Novel Amides and Amines of Gallium: A Brief Discussion on Synthesis and Their Crystal Structures”, Z. Kristallogr. Suppl. 32 (2012) 103.

162.   L. Shlyk, M. Bischoff, E. Rose, R. Niewa,„Evolution of Superconducting Properties of LiFeAs Single Crystals Doped with Magnetic or Nonmagnetic Impurities”, J. Supercond. Novel Magn. 26 (2013) 1189.

163.   M. Widenmeyer, R. Niewa, T. C. Hansen, H. Kohlmann,„In situ neutron diffraction as a probe on formation and decomposition of nitrides and hydrides: A case study”, Z. Anorg. Allg. Chem. 639 (2013) 285.

164.   L. Shlyk, R. Niewa,„Synthesis, Crystal Growth and Structure, Magnetic and Electrical Properties of Ba4Ru2FeO10 and Ba4Ru2CoO10”, Solid State Sci. 19 (2013) 58.

165.   K. Guo, D. Rau, J. von Appen, Y. Prots, W. Schnelle, R. Dronskowski, R. Niewa, U. Schwarz,„High-Pressure High-Temperature Behavior and magnetic Properties of Fe4N:Experiment and Theory”, High Pres. Res. 33 (2013) 684.           

166.   R. Niewa, S. Zhang, T. Richter,„Chemistry of Ammonothermal Nitride Growth” Z. Kristallogr. Suppl. 33 (2013) 26.

167.   M. Bischoff, L. Shlyk, R. Niewa,„Zr2Fe12As7: A New Iron Arsenide with Structural Relations to LiFeAs”, Z. Kristallogr. Suppl. 33 (2013) 72.

168.   T. Richter, S. Zhang, R. Niewa,„Ammonothermal Synthesis of a New Modification of K2[Zn(NH2)4]”, Z. Kristallogr. Suppl. 33 (2013) 82.

169.   R. Niewa, S. Zhang,„Intermediates during Ammono-basic Crystal Growth of GaN”, Z. Kristallogr. Suppl. 33 (2013) 127.

170.   R. Niewa,„Alkaline-earth Metal Nitrides of the Main-Group Elements: Crystal Structures and Properties of Inverse Perovskites” Z. Anorg. Allg. Chem. 639 (2013) 1699.       

171.   M. Bischoff, L. Shlyk, R. Niewa,„Zr2Fe12As7 and Hf2+xFe12–yAs7 with Zr2Fe12P7 type structure: Iron Arsenides with Layered Sections from LiFeAs Structure”, Solid State Sci. 21 (2013) 100.

172.   T. M. M. Richter, S. Zhang, R. Niewa,„Ammonothermal Synthesis of Dimorphic K2[Zn(NH2)4]”, Z. Kristallogr. 228 (2013) 351.

173.   S. Zhang, F. Hintze, W. Schnick, R. Niewa,„Intermediates in Ammonothermal GaN Crystal Growth Under Ammonoacidic Conditions”, Eur. J. Inorg. Chem. (2013) 5387.      

174.   M. Widenmeyer, T. C. Hansen, R. Niewa,„Formation and decomposition of metastable α´´-Fe16N2 from in situ powder neutron diffraction and thermal analysis”, Z. Anorg. Allg. Chem. 639 (2013) 2851.

175.   S. Pfeiffer, M. Bischoff, R. Niewa, B. Clauß, M. R. Buchmeiser,„Structure Formation in Yttrium Aluminum Garnet (YAG) Fibers”, J. Eur. Ceram. Soc. 34 (2014) 1321.   

176.   L. Shlyk, K. K. Wolff, M. Bischoff, E. Rose, Th. Schleid, R. Niewa,„Crystal structure and superconducting properties of hole-doped Ca0.89Na0.11FFeAs single crystals” Supercond. Sci. Technol. 27 (2014) 044011.

177.   K. Guo, D. Rau, W. Schnelle, U. Burkhardt, R. Niewa, U. Schwarz,„High-Pressure–High-Temperature Synthesis of ε-Fe2IrN0.24”, Z. Anorg. Allg. Chem. 640 (2014) 814.

178.   T. M. M. Richter, R. Niewa,„Chemistry of Ammonothermal Synthesis”, Inorganics 2 (2014) 29.

179.   M. Widenmeyer, T. C. Hansen, E. Meissner, R. Niewa,„Formation and decomposition of iron nitrides observed by in situ powder neutron diffraction and thermal analysis”, Z. Anorg. Allg. Chem. 640 (2014) 1265.       

180.   S. Zhang, N. S. A. Alt, E. Schlücker, R. Niewa,„Novel Alkali Metal Amidogallates as Intermediates in Ammonothermal GaN Crystal Growth”, J. Crystal Growth 403 (2014) 22.

181.   K. K. Wolff, L. Shlyk, M. Bischoff, R. Niewa, Th. Schleid,„Synthesis and Crystal Growth of Superconducting Hole-doped Ca1–xNaxFFeAs”, Materials 7 (2014) 1984.

182.   P. Eckold, R. Niewa, W. Hügel,„Texture of electrodeposited tin layers and its influence on their corrosion behavior”, Microelectron. Reliab. 54 (2014) 2578.

183.   L. Shlyk, M. Bischoff, E. Rose, R. Niewa,„Superconductivity at Tc = 36.5 K in Na-substituted SrFe2As2 Single Crystals”, Adv. Sci. Techn. 95 (2014) 150.

184.   M. Widenmeyer, E. Meissner, A. Senyshyn, R. Niewa,„On the formation mechanism of chromium nitrides: An in situ study” Z. Anorg. Allg. Chem. 640 (2014) 2801.

185.   D. A. Vinnik, D. A. Zherebtsov, L. S. Mashkovtseva, S. Nemrava, M. Bischoff, N. S. Perov, A. S. Semisalova, I. V. Krivtsov, L. I. Isaenko, G. G. Mikhailov, R. Niewa,„Growth, Structural and Magnetic Characterization of Al-substituted Barium Hexaferrite Single Crystals”, J. Alloys Compd. 615 (2014) 1043.

186.   D. A. Vinnik, D. A. Zherebtsov, L. S. Mashkovtseva, S. Nemrava, N. S. Perov, A. S. Semisalova, I. V. Krivtsov, L. I. Isaenko, G. G. Mikhailov, R. Niewa,„Ti-Substituted BaFe12O19 Single Crystal Growth and Characterization”, Cryst. Growth & Design 14 (2014) 5834.

187.   D. A. Vinnik, D. A. Zherebtsov, R. Niewa, L. I. Isaenko, G. G. Mikhailov,„Distribution of Dopant Metals between PbTiO3 Crystals and PbO–B2O3 Flux”, Russ. J. Gen. Chem. 84 (2014) 1888, Zhur. Obshch. Khim. 84 (2014) 1607.

188.   B. Hertweck, S. Zhang, T. G. Steigerwald, N. S. A. Alt, R. Niewa, E. Schlücker,„Applicability of metals as liner materials for the ammonoacidic crystal growth”, Chem. Eng. Technol. 11 (2014) 1835.

189.   T. M. M. Richter, N. S. A. Alt, E. Schlücker, R. Niewa,„Ammonothermal Synthesis of Li4[Zn(NH2)4](NH2)2 and Cs2[Zn(NH2)4]”, Z. Anorg. Allg. Chem. 640 (2014) 2386.

190.   J. Hertrampf, N. S. A. Alt, E. Schlücker, R. Niewa,„SrBa2(NH2)6: A new ternary amide from ammonothermal synthesis”, Z. Anorg. Allg. Chem. 641 (2015) 234.

191.   D. A. Vinnik, D. A. Zherebtsov, L. S. Mashkovtseva, S. Nemrava, A. S. Semisalova, D. M. Galimov, S. A. Gudkova, I. V. Chumakov L. I. Isaenko, R. Niewa,„Growth, Structural and Magnetic Characterization of Co- and Ni-substituted Barium Hexaferrite Single Crystals”, J. Alloys Compd. 628 (2015) 480.

192.   P. Woidy, A. J. Karttunen, M. Widenmeyer, R. Niewa, F. Kraus,„On Copper(I) Fluorides, the Cuprophilic Interaction, the Preparation of Copper Nitride at Room Temperature and the Formation Mechanism at Elevated Temperature”, Chem. Eur. J. 21 (2015) 3290.

193.   M. Widenmeyer, L. Shlyk, A. Senyshyn, R. Mönig, R. Niewa,„Structural and magnetic characterization of single-phase sponge-like bulk α’’-Fe16N2”, Z. Anorg. Allg. Chem. 641 (2015) 348.

194.   S. Schimmel, M. Lindner, T. G. Steigerwald, B. Hertweck, T. M. M. Richter, U. Künecke, N. S. A. Alt, R. Niewa, E. Schlücker, P. Wellmann,„Determination of GaN solubility in supercritical ammonia with NH4F and NH4Cl mineralizer by in situ x-ray imaging of crystal dissolution”, J. Cryst. Growth 418 (2015) 64.

195.   D. A. Vinnik, D. A. Zherebtsov, L. S. Mashkovtseva, S. Nemrava, A. K. Yakushechkina, A. S. Semisalova, S. A. Gudkova, A. N. Anikeev, N. S. Perov, L. I. Isaenko, R. Niewa,„Tungsten Substituted BaFe12O19 Single Crystal Growth and Characterization”, Mater. Chem. Phys. 155 (2015) 99.

196.   T. M. M. Richter, N. S. A. Alt, E. Schlücker, R. Niewa,„Ammonothermal synthesis and characterization of Li4[Zn(NH2)4](NH2)2”, Z. Anorg. Allg. Chem. 641 (2015) 1016.

197.   D. A. Vinnik, A. Tarasova, D. A. Zherebtsov, L. S. Mashkovtseva, I. V. Chumanov, S. Nemrava, A. K. Yakushechkina, A. S. Semisalova, N. S. Perov, L. I. Isaenko, R. Niewa,„Cu-substituted barium hexaferrite crystal growth and characterization”, Ceramics Int. 41 (2015) 9172.

198.   J. Hertrampf, N. S. A. Alt, E. Schlücker, R. Niewa,„SrBa2(NH2)6: A new ternary amide from ammonothermal synthesis”, Z. Kristallogr. Suppl. 35 (2015) 80.

199.   D. Stoiber, R. Niewa,„Structural Distortion in the Compounds (A3N)As (A = Mg, Ca, Sr, Ba)”, Z. Kristallogr. Suppl. 35 (2015) 83.

200.   C. W. Ney, R. Niewa,„Composition dependent transitions from cubic to tetragonal in Li7+xTexI1–xN2”, Z. Kristallogr. Suppl. 35 (2015) 86.

201.   P. Eckold, W. Hügel, R. Niewa,„Two Modifications of Tin(II) Bromide”, Z. Kristallogr. Suppl. 35 (2015) 102.

202.   S. Nemrava, D. A. Vinnik, D. A. Zherebtsov, L. S. Mashkovtseva, N. S. Perov, A. S. Semisalova, I. V. Krivtsov, L. I. Isaenko, G. G. Mikhailov, R. Niewa,„Ti-Substituted BaFe12O19 Single Crystal Growth and Characterization”, Z. Kristallogr. Suppl. 35 (2015) 125.

203.   S. Nemrava, D. A. Vinnik, D. A. Zherebtsov, L. S. Mashkovtseva, M. Bischoff, N. S. Perov, A. S. Semisalova, I. V. Krivtsov, L. I. Isaenko, G. G. Mikhailov, R. Niewa,„Growth, Structural and Magnetic Characterization of Al-Substituted barium hexaferrite Single Crystals”, Z. Kristallogr. Suppl. 35 (2015) 128.

204.   T. Richter, N. S. A. Alt, E. Schlücker, R. Niewa,„Trigonal bipyramidal coordination of Zn2+ in Zn(NH3)2F2 and Zn(NH3)3F2”, Z. Kristallogr. Suppl. 35 (2015) 135.

205.   P. Eckold, M. Rolff, R. Niewa, W. Hügel,„Synthesis, Characterization and in situ Raman Detection of Sn3O2(OH)2−xClx Phases as Intermediates in Tin Corrosion”, Corros. Sci. 98 (2015) 399.

206.   P. Eckold, W. Hügel, R. E. Dinnebier, R. Niewa,„Two Modifications of Tin(II) Bromide”, Z. Anorg. Allg. Chem. 641 (2015) 1467.

207.   S. Söllradl, M. Greiwe, V. Bukas, M. R. Buchner, M. Widenmeyer, T. Kandemir, T. Zweifel, A. Senyshyn, S. Günther, T. Nilges, A. Tuerler, R. Niewa,„Bulk Nitrogen-Doping in ZnO via Combustion Synthesis?”, Chem. Mater. 27 (2015) 4188.

208.   D. A. Vinnik, A. B. Ustinov, D. A. Zherebtsov, V. V. Vitko, S.A. Gudkova, I. Zakharchuk, E. Lähderanta, R. Niewa,„Structural and millimeter-wave characterization of flux grown Al substituted barium hexaferrite single crystals”, Ceramics Int. 41 (2015) 12728.          

209.   D. A. Vinnik, A. S. Semisalova, L. S. Mashkovtseva, A. K. Yakushechkina, S. Nemrava, S. A. Gudkova, D. A. Zherebtsov, N. S. Perov, L. I. Isaenko, R. Niewa,„Growth, Structural and Magnetic Characterization of Zn-substituted Barium Hexaferrite Single Crystals”, Mater. Chem. Phys. 163 (2015) 416.

210.   M. Widenmeyer, C. Wessel, R. Dronskowski, R. Niewa,„V16N1.5: Metastable or Missing in the Binary Phase Diagram?”, Z. Anorg. Allg. Chem. 641 (2015) 2610.

211.   L. Shlyk, D. A. Vinnik, D. A. Zherebtsov, Z. Hu, C.-Y. Kuo, C.-F. Chang, H.-J. Lin, L.-Y. Yang, A. S. Semisalova, N. S. Perov, T. Langer, R. Pöttgen, S. Nemrava, R. Niewa,„Single Crystal Growth, Structural Characteristics and Magnetic Properties of Chromium Substituted M-Type Ferrites”, Solid State Sci. 50 (2015) 23.

212.   H. Cao, T. M. M. Richter, C. Pistidda, A.-L. Chaudhary, A. Santoru, G. Gizer, R. Niewa, P. Chen, T. Klassen, M. Dornheim,„Alkali metal amidozincates for hydrogen storage”, ChemSusChem 8 (2015) 3777.

213.   P. Eckold, M. S. Sellers, R. Niewa, W. Hügel,„The surface energies of β-Sn − A new concept for corrosion and whisker mitigation”, Microelectron. Reliab. 55 (2015) 2799.

214.   D. A. Vinnik, S. A. Gudkova, R. Niewa,„Growth of lead and aluminum substituted barium hexaferrite single crystals from lead oxide flux”, Mater. Sci. Forum 843 (2016) 3.

215.   S. Pfeifer, P. Demirci, R. Duran, H. Stolpmann, A. Renfftlen, S. Nemrava, R. Niewa, B. Clauß, M. R. Buchmeiser, „Synthesis of zirconia toughened alumina (ZTA) fibers for high performance materials”, J. Eur. Ceram. Soc. 36 (2016) 725.

216.   M. Widenmeyer, C. Peng, A. Baki, W. Xie, R. Niewa, A. Weidenkaff,„Approaching Compositional Limits of Perovskite-type Oxides and Oxynitrides by Synthesis of Mg0.15Ca0.75Y0.1Ti(O,N)3, Ca1–xYxZr(O,N)3 (0.1 ≤ x ≤ 0.4), and Sr1–xLaxZr(O,N)3 (0.1 ≤ x ≤ 0.4)”, Solid State Sci. 54 (2016) 7.

217.   T. M. M. Richter, S. Le Tonquesse, N. S. A. Alt, E. Schlücker, R. Niewa,„Trigonal-Bipyramidal Coordination in First Ammoniates of ZnF2: ZnF2(NH3)3 and ZnF2(NH3)2”, Inorg. Chem. 55 (2016) 2488.

218.   J. Hertrampf, N. Alt, E. Schlücker, R. Niewa,„Ammonothermal Synthesis and Crystal Growth of Indium Nitride”, Z. Kristallogr. Suppl. 36 (2016) 73.

219.   T. Lehmann, R. Niewa,„Electrochemical formation of metal nitride surface layers in molten salt systems”, Z. Kristallogr. Suppl. 36 (2016) 85.

220.   D. Stoiber, P. Höhn, R. Niewa,„Nitrogen Ordering in Inverse Perovskite Nitrides”, Z. Kristallogr. Suppl. 36 (2016) 90.

221.   T. M. M. Richter, N. S. A. Alt, E. Schlücker, R. Niewa,„Subsequent condensation in [Zn2(NH3)2(NH2)3]Cl and [Zn(NH3)2(NH2)]Br: towards ammonothermal crystal growth of Zn3N2”, Z. Kristallogr. Suppl. 36 (2016) 90.

222.   S. Nemrava, D. Vinnik, I. Zakharchuk, E. Lähderanta, R. Niewa,„Crystal Growth and Characterization of Mn-substituted Barium Hexaferrites BaFe12–xMnxO19”, Z. Kristallogr. Suppl. 36 (2016) 147.

223.   S. Nemrava, L. Link, B. Blaschkowski, R. Niewa,„Crystal Growth and Characterization of BaMRu5O11 (M = Li, Cu)”, Z. Kristallogr. Suppl. 36 (2016) 147.

224.   H. Cao, A. Santoru, C. Pistidda, T. M. M. Richter, A.-L. Chaudhary, G. Gizer, R. Niewa, P. Chen, T. Klassen, M. Dornheim,„New synthesis route for ternary transition metal amides as well as ultrafast amide-hydride hydrogen storage materials”, Chem. Comm. 52 (2016) 5100.

225.   D. A. Vinnik, D. A. Zherebtsov, S. A. Gudkova, R. Niewa, N. S. Zabeivorota, F. V. Podgornov,„Broadband impedance spectroscopic characterization of PbTiO3 crystal grown by spontaneous crystallization from flux method”,   Ceramics Int. 42 (2016) 10787.

226.   D. A. Vinnik, S. A. Gudkova, R. Niewa,„Barium hexaferrite single crystal growth using PbO and Na2O based flux”, Mater. Sci. Forum 870 (2016) 66.

227.  J. Hertrampf, N. S. A. Alt, E. Schlücker, M. Knetzger, E. Meissner, R. Niewa,„Ammonothermal synthesis of GaN using Ba(NH2)2 as mineralizer”, J. Cryst. Growth 456 (2016) 2.

228.   M. Widenmeyer, L. Shlyk, N. Becker, R. Dronskowski, E. Meissner, R. Niewa,„Synthesis of metastable Co4N, Co3N, Co2N and CoO0.74N0.24 from a single azide precursor and intermediates in ammonolysis of CoBr2”, Eur. J. Inorg. Chem. (2016) 4792.

229.   T. Cichorek, Ł. Bochenek, M. Schmidt, A. Czulucki, G. Auffermann, F. Steglich, R. Kniep, R. Niewa, S. Kirchner,„Two-channel Kondo physics driven by arsenic bond fluctuations”, Phys. Rev. Let. 117 (2016) 106601.

230.   T. M. M. Richter, S. Strobel, N. S. A. Alt, E. Schlücker, R. Niewa,„Ammonothermal synthesis and crystal structures of diamminetriamidodizinc chloride [Zn2(NH3)2(NH2)3]Cl and diamminemonoamidozinc bromide [Zn(NH3)2(NH2)]Br”, Inorganics 4 (2016) 41.

231.   T. M. M. Richter, N. S. A. Alt, E. Schlücker, R. Niewa,„Ammonothermal Synthesis and Characterization of Cs2[Zn(NH2)4]”, Z. Anorg. Allg. Chem. 642 (2016) 1207.

232.   L. Shlyk, M. Bischoff, E. Rose, R. Niewa,„Growth, magnetic and transport properties of Li doped SrFe2As2 single crystals”, Phys. Status Solidi B 254 (2017) 1600118.

233.   J. Hertrampf, N. S. A. Alt, E. Schlücker, R. Niewa,„Three Solid Modifications of Ba[Ga(NH2)4]2: A Soluble Intermediate in Ammonothermal GaN Crystal Growth”, Eur. J. Inorg. Chem. (2017) 902.

234.   W. P. Clark, S. Steinberg, R. Dronskowski, C. McCammon, I. Kupenko,M. Bykov, L. Dubrovinsky, L. G. Akselrud, U. Schwarz, R. Niewa,„Novel High-pressure Polymorph of NiAs-Type FeN”, Z. Kristallogr. Suppl. 37 (2017) 138.

235.   L. Shlyk, L. E. De Long, R. Niewa,„Structure, Magnetic and Transport Properties of SrNiRu5O11 Single Crystals:
A New R-type Ferrite with Ordered Kagome Nets”, Phys. Rev. B 95 (2017) 024433.

236.   H. Cao, C. Pistidda, T. M. M. Richter, A. Santoru, C. Milanese, S. Garroni, J. Bednarcik, A.-L. Chaudhary, G. Gizer, H.-P. Liermann, R. Niewa, P. Chen, T. Klassen, M. Dornheim,„In situ X-ray diffraction study of the super-fast re-hydrogenation of K2[Zn(NH2)4]-8LiH”, J. Phys. Chem. C 121 (2017) 1546.

237.   S. Nemrava, D. A. Vinnik, Z. Hu, M. Valldor, C.-Y. Kuo, D. A. Zherebtsov, S. A. Gudkova, C.-T. Chen, L. H. Tjeng, R. Niewa,„Three Oxidation States of Mn in the Barium Hexaferrite BaFe12–xMnxO19”, Inorg. Chem. 56 (2017) 3861.

238.   W. P. Clark, S. Steinberg, R. Dronskowski, C. McCammon, I. Kupenko, M. Bykov, L. Dubrovinsky, L. G. Akselrud, U. Schwarz, R. Niewa,„NiAs-artige Hochdruck-Modifikation von FeN”, Angew. Chem. 129 (2017) 7408. „High-pressure NiAs-Type Modification of FeN”, Angew. Chem. Int. Ed. 56 (2017) 7302.

239.   T. Cichorek, L. Bochenek, M. Schmidt, A. Czulucki, G. Auffermann, R. Kniep, R. Niewa, F. Steglich, S. Kirchner,„Reply to Comment on Two-channel Kondo physics due to As vacancies in the layered compound ZrAs1.58Se0.39”, Phys. Rev. Lett. 118 (2017) 259702.

240.   G. Büttner, S. Populoh, W. Xie, M. Trottmann, J. Hertrampf, M. Döbeli, L. Karvonen, S. Yoon, P. Thiel, R. Niewa, A. Weidenkaff,„Thermoelectric properties of [Ca2CoO3–δ][CoO2]1.62 as a function of Co/Ca ratio and Co3O4 inclusions”, J. Appl. Phys. 121 (2017) 215101.

241.   D. A. Vinnik, A. Yu. Tarasova, D. A. Zherebtsov, S. A. Gudkova, D. M. Galimov, V. E. Zhivulin, S. Nemrava, N. S. Perov, L. I. Isaenko, R. Niewa,„Magnetic and structural properties of barium hexaferrite from various growth techniques”, Materials 10 (2017) 578.

242.   H. Cao, J. Guo, F. Chang, C. Pistidda, W. Zhou, X. Zhang, A. Santoru, H. Wu, N. Schell, R. Niewa, P. Chen, T. Klassen, M. Dornheim,„Transition and Alkali Metal Complex Ternary Amides for Ammonia Synthesis and Decomposition”, Chem. Eur. J. 23 (2017) 9766.

243.   J. Hertrampf, E. Schlücker, D. Gudat, R. Niewa,„Dissolved Intermediates in Ammonothermal Crystal Growth: Stepwise Condensation of [Ga(NH2)4] towards Ga”, Cryst. Growth & Design 17 (2017) 4855.

244.   D. Stoiber, M. Bobnar, P. Höhn, R. Niewa,„Lithium alkaline earth tetrelides of the type Li2EaTt (Ea = Ca, Ba, Tt = Si, Ge, Sn, Pb): Synthesis, Crystal Structures and Physical Properties”, Z. Naturforsch. B 72 (2017) 847.

245.   D. A. Vinnik, I. A. Ustinov A. B. Ustinov, D. A. Zherebtsov, S.A. Gudkova, E. A. Trofimov, N. S. Zabeivorota, G. G. Mikhailov, R. Niewa,„Millimeter-wave characterization of aluminium-substituted barium lead hexaferrite single crystals grown from PbO–B2O3 flux”, Ceramics Int. 43 (2017) 15800.          

246.   M. Pathak, D. Stoiber, M. Bobnar, A. Ovchinnikov, A. Ormeci, R. Niewa, P. Höhn,„Synthesis, Characterization and Chemical Bonding Analysis of the Lithium Alkaline-earth Metal Gallide Nitrides Li2(Ca3N)2[Ga4]  and Li2(Sr3N)2[Ga4]”, Z. Allg. Anorg. Chem. 643 (2017) 1557.

247.   M. Widenmeyer, T. C. Hansen, A. Leineweber, A. Weidenkaff, R. Niewa,„Nitrogen Transfer between Solid Phases in the System Mn–N Detected via in situ Neutron Diffraction”, Z. Anorg. Allg. Chem. 643 (2017) 1929.

248. D. A. Vinnik, A. S. Chernukha, S. A. Gudkova, V. E. Zhivulin, E. A. Trofimov, A. Y. Tarasova, D. A. Zherebtsov, M.Kalandija, A. V. Trukhanov, S. V. Trukhanov, A. V. Senin, L. I. Isaenko, N. S. Perov, R. Niewa, „Morphology and magnetic properties of pressed barium hexaferrite BaFe12O19 materials”, J. Magn. Magn. Mater. 459 (2018) 131.

249.   M. Pathak, D. Stoiber, M. Bobnar, A. Ormeci, Y. Prots, R. Niewa, P. Höhn, „The Inverse Perovskite Nitrides (Sr3N2/3–x)Sn, (Sr3N2/3x)Pb, and (Sr3N)Sb: Flux Crystal Growth, Crystal Structures and Physical Properties”, Z. Allg. Anorg. Chem. 644 (2018) 161.

250.   L. Shlyk, S. Strobel, B. Farmer, L. E. DeLong, R. Niewa, „Coexistence of ferromagnetism and  spin glass freezing in the site-disordered kagome ferrite SrSn2Fe4O11”, AIP Advances 8 (2018) 055708.

251.   L. Shlyk, S. Strobel, B. Farmer, L. E. DeLong, R. Niewa, „Coexistence of ferromagnetism and unconventional spin-glass freezing in the site-disordered kagome ferrite SrSn2Fe4O11”, Phys. Rev. B 97 (2018) 054426.

252.  J. Hertrampf, P. Becker, M. Widenmeyer, A. Weidenkaff, E. Schlücker, R. Niewa, „Ammonothermal Crystal Growth of Indium Nitride”, Cryst. Growth & Design 18 (2018) 2365.

253.   S. Nemrava, L. Link, Z. Hu, B. Blaschkowski, S. C. Liao, H. J. Lin, C. T. Chen, T. S. Chan, L. H. Tjeng, R. Niewa, „Synthesis and Characterization of BaLiRu5O11, BaCu1+xRu5–xO11 and BaLi1–xCuxRu5–δO11”, Z. Anorg. Allg. Chem. 644 (2018) 1691.

254.   W. P. Clark, R. Niewa, „Li and Co ordering in the nitridocobaltate(I) SrLi2{Li[CoN2]}”, Crystals 8 (2018) 268.

255.   S. Schimmel, P. Duchstein, T. G. Steigerwald, A.-C. L. Kimmel, E. Schlücker, D. Zahn, R. Niewa, P. Wellmann, „Transport and chemistry of Ga-containing intermediates investigated by in situ x-ray monitoring of GaN dissolution”, J. Cryst. Growth 498 (2018) 214.

256.   D. A. Vinnik, L. S. Mashkovtseva, S. A. Gudkova, E. A. Trofimov, D. A. Zherebtsov, A. V. Trukhanov, S. V. Trukhanov, S. Nemrava, B. Blaschkowski, R. Niewa, „Flux single crystal growth of M-type strontium hexaferrite SrFe12O19 by spontaneous crystallization”, J. Magn. Magn. Mater. 470 (2019) 97.

257.   D. Stoiber, R. Niewa,„Perovskite-distortion inverted: Crystal structures of (A3N)As (A = Mg, Ca, Sr, Ba)”, Z. Anorg. Allg. Chem. 645 (2019) 329.

258.   D. Stoiber, R. Niewa,„PolyDis: simple quantification tool for distortion of polyhedra in crystalline solids”, Z. Kristallogr. 234 (2019) 201.

259.   T. S. Lehmann, R. Niewa, „Electrochemical synthesis of highly nitrogen containing γ-FeN0.13 and ε-Fe3N1.51 in a molten salt system”, Eur. J. Inorg. Chem. (2019) 730.

260.   T. S. Lehmann, B. Blaschkowski, R. Niewa, „Electrochemical bulk synthesis of ternary nitride perovskites: Co3InN and Ni3InN”, Eur. J. Inorg. Chem. (2019) 1709.

261.   M. R. Amin, T. de Boer, A. Moewes, P. Becker, J. Hertrampf, R. Niewa, „Studying the effects of oxygen impurities and impurity phases on band gap and electronic structure of ammonothermal InN: Experiment and Theory”, J. Phys. Chem. C 123 (2019) 8943.

262.   D. A. Zherebtsov, M. U. Schmidt, R. Niewa, C. P. Sakthidharan, F. V. Podgornov, Y. V. Matveichuk, S. A. Nayfert, M. A. Polozov, S. N. Ivashevskaya, A. I. Stash, Y.-S. Chen, D. E. Zhivulin, V. E. Zhivulin, S. V. Merzlov, E. V. Bartashevich, V. V. Avdin, H. S. Hsu, F. W. Guo, „Two new polymorphs of cis-perinone: crystal structures, physical and electric properties”, Acta Crystallogr. B 75 (2019) 384.

263. L. Link, Y. Lin, R. Niewa, „Two New Nitridogermanates: Sr4[GeN4] and Sr12Ge2[GeN3]2[GeN4]2” Z. Kristallogr. Suppl. 39 (2019) 90.

264. D. A. Vinnik, E. A. Trofimov, V. E. Zhivulin, O. V. Zaitseva, S. A. Gudkova, A. Y. Starikov, D. A. Zherebtsov, A. A. Kirsanova, M. Häßner, R. Niewa, „High-entropy oxide phases with magnetoplumbite structure” Ceramics Int. 45 (2019) 12942.

265. Schwarz, K. Guo, W. P. Clark, U. Burkhardt, M. Bobnar, R. Castillo, L. Akselrud, R. Niewa, „Ferromagnetic e-Fe2MnN: high-pressure synthesis, hardness and magnetic properties” Materials 12 (2019) 1993.

266. R. Niewa, „Metal-Rich Ternary Perovskite Nitrides” Eur. J. Inorg. Chem. (2019) 3647.

267. T. S. Lehmann, B. Blaschkowski, R. Niewa, „Electrochemical synthesis of transition metal oxide nitrides with ε-TaN, δ-NbN and γ´-Mo2N structure type in a molten salt system” Z. Naturforsch. B 75 (2020) 33.

268. W. P. Clark, R. Niewa, „Synthesis and characterisation of the nitridocuprate(I) nitride carbodiimide
Sr6N[CuN2][CN2]2” Z. Anorg. Allg. Chem. 646 (2020) 114.

269. W. P. Clark, A. Köhn, R. Niewa, „Das quasi-binäre Acetonitriltriid Sr3[C2N]2” Angew. Chem. 132 (2020) 347. „The quasi-binary acetonitriletriide Sr3[C2N]2” Angew. Chem. Int. Ed. 59 (2020) 339.

270. C. M. Schurz, R. Niewa, T. Schleid, „LiLa4N2I7 as the First Lithium-Containing Nitride Halide of the Lanthanides: Synthesis, Crystal Structure and Spectroscopic Characterization” Solid State Sci. 99 (2020) 106047.

271. P. Becker, T. Wonglakhon, D. Zahn, D. Gudat, R. Niewa, „Approaching Dissolved Species in Ammonoacidic GaN Crystal Growth: A Combined Solution NMR and Computaional Study” Chem. Eur. J. 26 (2020) 7008.

272. M. Häßner, D. A. Vinnik, R. Niewa, „Thermal History Dependent Al Distribution in Aluminium Substituted Strontium Hexaferrite” Materials 13 (2020) 858.

273. L. Link, R. Niewa, „Diversity of Strontium Nitridogermanates(IV): Novel Sr4[GeN4], Sr8Ge2[GeN4] and Sr17Ge2[GeN3]2[GeN4]2” Z. Anorg. Allg. Chem. 646 (2020) 1105.

274. V. V. Gudkov, M. N. Sarychev, S. Zherlitsyn, I. V. Zhevstovskikh, N. S. Averkiev, D. A. Vinnik, S. A. Gudkova, R. Niewa, M. Dressel, L. N. Alyabyeva, B. P. Gorshunov, I. B. Bersuker, „Sub-lattice of Jahn-Teller centers in hexaferrite crystal” Sci. Rep. 10 (2020) 7076.

275. D. A. Vinnik, I. P. Prosvirin, V. E. Zhivulin, N. Wang, X. Jiang, E. A. Trofimov, O. V. Zaitseva, S. A. Gudkova, S. Nemrava, D. A. Zherebtsov, R. Niewa, V. V. Atuchin, Z. Lin, „Crystal growth, structural characteristics and electronic structure of Ba1‒xPbxFe12O19 (x = 0.23 – 0.80) hexaferrites” J. Alloys Comp. 844 (2020) 156036.

276. C. Bäucker, R. Niewa, „A New Modification of Rb[Al(NH)2]4 and Condensation in Solid State” Crystals 10 (2020) 1018.

277. M. Braden, K. Hradil, R. v. Klitzing, W. Lohstroh, A. Meyer, W. Richtering, A. Schneidewind, B. Märkisch, R. Niewa, F. Schreiber, „Strategiepapier: Neutronenforschung in Deutschland für Wissenschaft und Gesellschaft, Perspektiven und Empfehlungen 2020“ 11. Komitee Forschung mit Neutronen (2017 – 2020, Hrg.).

Publikationen 2000 - 2010

23.  R. Niewa, H. Jacobs,„Crystal structure of  dirubidium oxodinitridotungstate(VI), Rb2[WN2O]”, Z. Kristallogr. NCS 215 (2000) 17.

24.  P. Höhn, R. Niewa, R. Kniep,„Crystal structure of tetra(calcium/strontium) cyanamide dinitride, (Ca4–xSrx)[CN2]N2 (x = 0.80)”, Z. Kristallogr. NCS  215 (2000) 323.

25.  F. Tessier, A. Navrotsky, R. Niewa, A. Leineweber, H. Jacobs, S. Kikkawa, M. Takahashi, F. Kanamaru, F. J. DiSalvo,„Energetics of binary iron nitrides”, Solid State Sci. 2 (2000) 457.

26.  A. Leineweber, R. Niewa, H. Jacobs, W. Kockelmann,„The manganese nitrides η-Mn3N2 and θ-Mn6N5+x: Nuclear and magnetic structures”, J. Mater. Chem. 10 (2000) 2827.

27.  J. Klatyk, R. Niewa, R. Kniep,„Ca{Li2[MnIN]2}: Kristallchemischer Brückenschlag zwischen Lithium-Nitrido-Verbindungen und Borid-Carbiden des Typs M[B2C2]”, Z. Naturforsch. 55b (2000) 988.

28.  M. Ludwig, J. Jäger, R. Niewa, R. Kniep,„Crystal Structures of two Polymorphs of Ca3[Al2N4]”, Inorg. Chem. 39 (2000) 5909.

29.  R. Niewa, W. Schnelle, F. R. Wagner,„Synthesis, Crystal Structure and Physical Properties of (Ca3N)Tl”, Z. Anorg. Allg. Chem. 627 (2001) 365.

30.  F. Tessier, M. R. Ranade, A. Navrotsky, R. Niewa, F. J. DiSalvo, A. Leineweber, H. Jacobs,„Thermodynamics of Formation of Binary and Ternary Nitrides in the System Ce–Mn–N”, Z. Anorg. Allg. Chem. 627 (2001) 194.

31.  R. Niewa, R. Kniep,„Redetermination of the crystal structure of heptalithium tetranitridovanadate(V), Li7[VN4]”, Z. Kristallogr. NCS 216 (2001) 5.

32.    Yu. M. Prots‘, R. Niewa, W. Schnelle,„Neue ternäre Erdalkali-Cer(IV)-nitride: CaCeN2 und SrCeN2”, Z. Kristallogr. Suppl. 18 (2001) 138.

33.    L. Vasylechko, R. Niewa, H. Borrmann, M. Knapp, D. Savytskii, A. Matkovski, U. Bismayer, M. Berkowski,„R-3c - Pbnm phase transition of La1–xSmxGaO3 (0 < x < 0.3) perovskites and crystal structures of the orthorhombic and trigonal phases”, Solid State Ionics 143 (2001) 219.

34.    U. Heckers, R. Niewa, H. Jacobs,„Abstandsvergleich M–H/M–D aus Röntgen- und Neutronenbeugungsdaten am Beispiel von Na3Rh(H/D)6”, Z. Anorg. Allg. Chem. 627 (2001) 1401.   

35.  R. Niewa, F. R. Wagner, W. Schnelle, O. Hochrein, R. Kniep,„Li24[MnN3]3N2 and Li5[(Li1–xMnx)N]3, Two Intermediates in the Decomposition Path of Li7[MnN4] to Li2[(Li1–xMnx)N]: An Experimental and Theoretical Study”, Inorg. Chem. 40 (2001) 5215.

36.    R. Niewa, P. Höhn, R. Kniep, A. Weiske, H. Jacobs,„Crystal structure of pentapotassium dicarbodiimide monohydride, K5[CN2]2H”, Z. Kristallogr. NCS 216 (2001) 335.

37.    U. Schwarz, R. Giedigkeit, R. Niewa, M. Schmidt, W. Schnelle, R. Cardoso, M. Hanfland, Z. Hu, K. Klementiev, Yu. Grin,„Pressure-induced Oxidation State Change of Ytterbium in YbGa2”, Z. Anorg. Allg. Chem. 627 (2001) 2249.

38.  R. Niewa,„Nitridocompounds of manganese: manganese nitrides and nitridomanganates”, Z. Kristallogr. 217 (2002) 8.

39.  J. Klatyk, W. Schnelle, F. R. Wagner, R. Niewa, P. Nowak, R. Kniep, M. Waldeck, V. Ksenofontov, P. Gütlich,„Large Orbital Moments and Internal Magnetic Fields in Lithium-Nitridoferrate(I)”, Phys. Rev. Lett. 88 (2002) 207202.

40.  R. Niewa,„Na3N – ein origineller Syntheseweg für ein lange gesuchtes binäres Nitrid”, Angew. Chem. 114 (2002) 1777,„Na3N – An Original Synthetic Route for a Binary Nitride long Sought After”, Angew. Chem. Int. Ed. 41 (2002) 1701.

41.  R. Niewa, W. Schnelle, F. R. Wagner, Z.-L. Huang, J. Klatyk, M. Kirchner, G. Auffermann, Yu. Prots‘, M. Kohout, U. Schmidt, M. Baenitz, S. Bühler-Paschen, A. Bentien, R. Kniep, P. Novák, P. Gütlich, R. Schlögel, S. F. Parker,„Metallreiche Stickstoffverbindungen: Zwischen Valenzverbindungen und metallischen Systemen”, Jahrbuch der Max-Planck-Gesellschaft (2002) 601.

42   R. Giedigkeit, R. Niewa, W. Schnelle, Y. Grin, R. Kniep,„On the binary compound YbGa5”, Z. Anorg. Allg. Chem. 628 (2002) 1692.

43.  Y. Prots‘, R. Niewa, W. Schnelle, R. Kniep,„New Ternary Alkaline Earth Cerium(IV) Nitrides: CaCeN2 and SrCeN2”, Z. Anorg. Allg. Chem. 628 (2002) 1590.

44.  R. Niewa, D. A. Zherebtsov, R. Kniep,„Zur Polymorphie von Li7[VN4]”, Z. Anorg. Allg. Chem. 628 (2002) 2202.

45.  M. Kirchner, R. Niewa, W. Schnelle, F. R. Wagner, D. Walther, R. Kniep,„Seltenerdnitride des Indiums (R3N)In”, Z. Anorg. Allg. Chem. 628 (2002) 2202.

46.  R. Niewa, D. A. Zherebtsov, H. Borrmann, R. Kniep,„Preparation and Crystal Structure of Li4[TaN3]”, Z. Anorg. Allg. Chem. 628 (2002) 2505.

47.  R. Niewa, D. A. Zherebtsov,„Redetermination of the crystal structure of tetralithium nitride hydride, Li4NH”, Z. Kristallogr. NCS 217 (2002) 317.

48.  R. Niewa, Z. Hu, C. Grazioli, U. Rößler, M. S. Golden, M. Knupfer, J. Fink, H. Giefers, G. Wortmann, F. M. F. de Groot, F. J. DiSalvo,„XAS spectra of Ce2[MnN3] at the Ce-M4,5, Ce-L3, Mn-L2,3 and N-K thresholds”, J. Alloys Compd. 346 (2002) 129.

49.  D. A. Zherebtsov, L. G. Akselrud, R. Niewa,„Crystal structure of dicalcium trinitridomonovanadate(V), Ca2[VN3]”, Z. Kristallogr. NCS 217 (2002) 469.

50.  L. Vasylechko, W. Schnelle, U. Burkhardt, R. Ramlau, R. Niewa, H. Borrmann, K. Hiebl, Z. Hu, Yu. Grin,„Crystal structure, magnetic behaviour and valence state of ytterbium in the Yb4Ni10+xGa21–x phase”, J. Alloys Compd. 350 (2003) 9.

51.  R. Niewa, Z.-L. Huang, W. Schnelle, Z. Hu, R. Kniep,„Preparation, Crystallographic, Spectroscopic and Magnetic Characterization of Low-valency Nitridometalate Phases Li2[(Li1–xMx)N] with M = Cu, Ni”, Z. Anorg. Allg. Chem. 629 (2003) 1778.

52.  L. Vasylechko, V. Vashook, D. Savytskii, A. Senyshyn, R. Niewa, M. Knapp,H. Ullmann, M. Berkowski, A. Matkovskii, U. Bismayer,„Crystal structure, thermal expansion and conductivity of anisotropic La1–xSrxGa1–2xMg2xO3–y (x = 0.05, 0.1) single crystals”, J. Solid State Chem. 172 (2003) 396.

53.  R. Cardoso, R. Niewa, M. Schmidt, M. Armbrüster, M. Hanfland, K. Klementiev, U. Schwarz,„Pressure-induced Changes of the Crystal Structure of Eu4P3”,  Z. Anorg. Allg. Chem. 629 (2003) 454.

54.  R. Niewa, Z. Hu, R. Kniep,„Mn and Fe K-edge XAS Spectra of Manganese and Iron Nitrido Compounds”, Eur. J. Inorg. Chem. (2003) 1632.         

55.  R. Niewa, D. A. Zherebtsov, Z. Hu,„Polymorphism of Heptalithium Nitridovanadate(V) Li7[VN4]”, Inorg. Chem. 42 (2003) 2538.

56.  R. Niewa, D. A. Zherebtsov, S. Leoni,„Li3[ScN2]: The First Nitridoscandate(III) – Tetrahedral Coordination and Unusual MX2-Framework”, Chem. Eur. J. 9 (2003) 4255.

57.  M. Kirchner, W. Schnelle, F. R. Wagner, R. Niewa,„Preparation, Crystal Structure and Physical Properties of Ternary Compounds (R3N)In, R = Rare-Earth Metal”, Solid State Sci. 5 (2003) 1247.

58.  R. Niewa, D. A. Zherebtsov, P. Höhn,„Crystal structure of tristrontium tetranitridomonochromate(VI), Sr3[CrN4]”, Z. Kristallogr. NCS 218 (2003) 163.

59.  V. Ksenofontov, S. Reiman, M. Waldeck, R. Niewa, R. Kniep, P. Gütlich,„In situ-High Temperature Mössbauer Spectroscopy of Iron Nitrides and Nitridoferrates”, Z. Anorg. Allg. Chem. 629 (2003) 1787.

60.  R. Niewa, D. A. Zherebtsov,„New Phases in the Lithiumnitridovanadate System – The Solid Solution Li7–2xMgx[VN4] (0 ≤ x ≤ 1)”, Z. Anorg. Allg. Chem. 630 (2004) 229.

61.  M. Kirchner, H. Zhang, R. Niewa,„Die Kristallstruktur von La16Al13”, Z. Kristallogr. Suppl. 21 (2004) 167.

62.  W. Schnelle, R. Niewa, F. R. Wagner,„Magnetic and electronic properties of lithium nitridometalates Li2[(Li1-xTx)N] (T = Co, Ni, Cu)”, J. Magn. Magn. Mater. 272–276 (2004) 828.

63.  F. Gäbler, M. Kirchner, W. Schnelle, H. Rosner, R. Niewa,„Perowskit-Nitride (A3Nx)E mit A = Sr, Ba und E = Sb, Bi (x = 1), E = Sn, Pb (x < 1) ”, Z. Anorg. Allg. Chem. 630 (2004) 1723.

64.  M. Kirchner, F. R. Wagner, W. Schnelle, R. Niewa,„Beiträge zur Verbindungsbildung im System Ca–In–N”, Z. Anorg. Allg. Chem. 630 (2004) 1735.

65.  R. Niewa, D. A. Zherebtsov, W. Schnelle, F. R. Wagner,„Metal–Metal Bonding in ScTaN2. A New Compound in the System ScN–TaN”, Inorg. Chem. 43 (2004) 6188.

66.  F. Gäbler, M. Kirchner, W. Schnelle, U. Schwarz, M. Schmitt, H. Rosner, R. Niewa,„(Sr3N)E and (Ba3N)E (E = Sb, Bi): Synthesis, Crystal Structure, and Physical Properties”, Z. Anorg. Allg. Chem. 630 (2004) 2292.

67.  R. Niewa, D. A. Zherebtsov, M. Kirchner, M. Schmidt, W. Schnelle,„New Ways to High-Quality Bulk Scandium Nitride” Chem. Mater. 16 (2004) 5445.

68.  A. Schlechte, Yu. Prots, R. Niewa,„Crystal Structure of hexabarium mononitride pentaindide, (Ba6N)[In5]”, Z. Kristallogr. NCS 219 (2004) 349.

69.  J. Schmidt, R. Niewa, M. Schmidt, Yu. Grin,„Spark Plasma Sintering Effect on the Decomposition of MgH2”, J. Am. Ceram. Soc. 88 (2005) 1870.

70.  R. Niewa, M. Schmidt, T. Cichorek, G. Auffermann, R. Ramlau, Yu. Prots, U. Schmidt, A. Völzke, K. Schulze, U. Burckhardt, H. Borrmann, R. Cardoso, W. Schnelle, A. Schlechte, F. Steglich, R. Kniep,„ZrAs1,4Se0,5 – Ein neues nicht-magnetisches Kondo-System mit den Eigenschaften eines einfachen Metalls”, Jahrbuch der Max-Planck-Gesellschaft (2005) 535.

71.  M. Boström, R. Niewa, Yu. Prots, Yu. Grin,„Synthesis, phase relationship and crystal structure of the new binary compound Ir13Al45”, J. Solid State Chem. 178 (2005) 339.

 72.  A. Lieb, M. T. Weller, P. F. Henry, R. Niewa, R. Pöttgen, R.-D. Hoffmann, H. E. Höfer, W. Schnick „Oxonitridosilicate-chlorides – Synthesis, Single-Crystal X-ray and Neutron Powder Diffraction, Chemical Analysis and Properties of Ln4[Si4O3+xN7–x]Cl1–xOx with Ln = Ce, Pr, Nd and x ≈ 0.2”, J. Solid State Chem. 178 (2005) 976.

73.  F. Gäbler, M. Kirchner, W. Schnelle, M. Schmitt, H. Rosner, R. Niewa,„(Sr3Nx)E and (Ba3Nx)E (E = Sn, Pb): Preparation, Crystal Structures, Physical Properties and Electronic Structures”, Z. Anorg. Allg. Chem. 631 (2005) 397.

74.  R. Niewa, M. Kirchner, H. Zhang, W. Schnelle, Yu. Grin,„Metallic barrelane: crystal structure, physical properties and bonding analysis of La16Al13”, Z. Kristallogr. 220 (2005) 115.

75.  J. P. A. Makongo, Yu. Prots, U. Burkhardt, R. Niewa, G. Kreiner,„Disorder and homogeneity range in the structure of the complex alloy phase Mg6Pd”, Z. Kristallogr. Suppl. 22 (2005) 71.

76.  M. Kirchner, W. Schnelle, F. R. Wagner, R. Kniep, R. Niewa,„(A19N7)[In4]2 (A = Ca, Sr) and (Ca4N)[In2]: Synthesis, Crystal Structures, Physical Properties, and Chemical Bonding”, Z. Anorg. Allg. Chem. 631 (2005) 1477.

77.  J. P. A. Makongo, C. Kudla, Yu. Prots, R. Niewa, U. Burkhardt, G. Kreiner,„Redetermination of the crystal structure of trimagnesium palladium, Mg3Pd”, Z. Kristallogr. NCS 220 (2005) 289S.

78.  A. Schlechte, M. Schmidt, T. Cichorek, P. Simon, Yu. Prots, Th. Doert, R. Niewa,F. Steglich, R. Kniep,„Ordnung und Unordnung in Phasen vom PbFCl-Typ im System Zr–As–Se”, Z. Kristallogr. Suppl. 22 (2005) 115.

79.  R. Niewa, D. Wilmer,„Festkörperchemie 2004”, Nachrichten aus der Chemie 53 (2005) 244.

80.  J. P. A. Makongo, Yu. Prots, R. Niewa, U. Burkhardt, G. Kreiner,„Crystal structure of dimagnesium monopalladium, Mg2Pd”, Z. Kristallogr. NCS 220 (2005) 291.

81.  M. Schmidt, T. Cichorek, R. Niewa, A. Schlechte, Yu. Prots, F. Steglich, R. Kniep,„Crystallographic disorder and electron scattering on structural two-level systems in ZrAs1.4Se0.5”, J. Phys.: Condens. Matter 17 (2005) 5481.

82.  Leoni, R. Niewa, L. Akselrud, Yu. Prots, W. Schnelle, T. Göksu, M. Cetinkol, M. Somer, R. Kniep,„Novel Barium Beryllates Ba[Be2N2] and Ba3[Be5O8]: Syntheses, Crystal Structures and Bonding Properties”, Z. Anorg. Allg. Chem. 631 (2005) 1818.

83.  A. Houben, P. Müller, J. von Appen, H. Lueken, R. Niewa, R. Dronskowski,„Synthesis, Crystal Structure and Magnetic Properties of the Semihard Itinerant Ferromagnet RhFe3N”, Angew. Chem. Int. Ed. 44 (2005) 7212. „Synthese, Kristallstruktur und magnetische Eigenschaften des halbharten iteneranten Ferromagneten RhFe3N”,  Angew. Chem. 117 (2005) 7379.

84.  S. Natarajan, Yu. Prots, R. Niewa, R. Kniep,„Crystal structure of 1,2-ethylenediamine-dizinc diphosphate(III), Zn2(C2H8N2)(HPO3)2”, Z. Kristallogr. NCS 220 (2005) 455.

85.  J. P. A. Makongo, Yu. Prots, U. Burkhardt, R. Niewa, C. Kudla, G. Kreiner,„A case study of complex metallic alloy phases: Structure and disorder phenomena of Mg–Pd compounds”, Phil. Mag. 86 (2006) 427.

86.  M. Kirchner, F. Gäbler, W. Schnelle, F. R. Wagner, R. Niewa,„(La3Zx)Al and (Ce3Zx)Al with Z = C, N, O: Preparation, Physical Properties and Chemical Bonding of Metal-rich Perovskites”, Z. Kristallogr. 221 (2006) 543.

87.  S. Natarajan, Yu. Prots, B. Ewald, R. Niewa, R. Kniep,„Polymorphism of [Zn(2,2’-bipy)(H2PO4)2]2”, Z. Anorg. Allg. Chem. 632 (2006) 37.

88.  R. Niewa, D. A. Zherebtsov, Comment on the Paper: „Synthesis and Electrochemical Study of Antifluorite-
type Phases in the Li–M–N–O (M = Ti, V) Systems”, Z. Anorg. Allg. Chem. 632 (2006) 387.

89.  F. Gäbler, R. Niewa,„Strukturvielfalt inverser Perowskite”, Z. Anorg. Allg. Chem. 632 (2006) 2103.

90.  B. Schüpp-Niewa, L. Shlyk, Yu. Prots, R. Niewa, G. Krabbes,„Crystal structure of Ba3ZrRu2O9 – a new 6H-(cch)2 perovskite”, Z. Anorg. Allg. Chem. 632 (2006) 572.

91.  M. Kirchner, W. Schnelle, R. Niewa,„Inverse Perovskites (RE3N)Sn with RE = La, Ce, Pr, Nd, Sm: Preparation, Crystal Structure and Physical Properties”, Z. Naturforsch. 61b (2006) 813.

92.  K. Söderberg, M. Boström, Y. Kubota, T. Nishimatsu, R. Niewa, U. Häussermann, Y. Grin, O. Terasaki,„Crystal structures and phase stability in pseudobinary CaAl2–xZnx”, J. Solid State Chem. 179 (2006) 2690.

93.  M. Boström, H. Lind, S. Lidin, R. Niewa, Y. Grin,„Synthesis, crystal structure, phase relations and chemical bonding analysis of the new Nowotny chimney-ladder compound ZrBi1.62” Solid State Sci. 8 (2006) 1173.

94.  M. Kirchner, W. Schnelle, R. Niewa,„Inverse Perovskites (Eu3O)E with E = Sn, In: Preparation, Crystal Structures and Physical Properties”, Z. Anorg. Allg. Chem. 632 (2006) 559.

95.  A. Schlechte, R. Niewa, T. Cichorek, Yu. Prots, M. Schmidt, R. Ramlau, R. Kniep,„Beiträge zu ternären metallischen Zr Pniktidchalkogeniden”, Z. Anorg. Allg. Chem. 632 (2006) 2107.

96.  F. Gäbler, Yu. Prots, R. Niewa,„First Observation of an Inverse Ruddlesden-Popper Series: (A3n+1ONn–1)Bin+1 with A = Sr, Ba and n = 1, 3”, Z. Anorg. Allg. Chem. 633 (2007) 93.

97.  F. Gäbler, R. Niewa,„Stacking Design of Inverse Perovskites: The Systems (Sr3–xBaxN)E, E = Bi, Sb”, Inorg. Chem. 46 (2007) 859.   

98.  T. Cichorek, D. Gnieda, R. Niewa, A. Schlechte, M. Schmidt, Yu. Prots, R. Ramlau, Z. Henkie, R. Kniep, F. Steglich,„Resistivity Anomaly in Structurally Disordered PbFCl-type Arsenide Selenides”, J. Low Temp. Phys. 147 (2007) 309.

99.  L. Vasylechko, A. Senyshyn, D. Trots, R. Niewa, W. Schnelle, M. Knapp,„CeAlO3 and Ce1–xRxAlO3 (R = La, Nd) solid solutions: Crystal structure, thermal expansion and phase transitions”, J. Solid State Chem. 180 (2007) 1277.

100.   J. P. A. Makongo, U. Burkhardt, Y. Prots, R. Niewa, G. Kreiner,„Komplexität in der Welt intermetallischer Phasen”, Jahrbuch der Max-Planck-Gesellschaft (2007) 503.
 
101.   F. Karau, O. Oeckler, R. Niewa, F. Schäfers, W. Schnick,„[Zn8P12N24]O2 ein Nitridophosphat-oxid mit Sodalith-Struktur”, Z. Anorg. Allg. Chem. 633 (2007) 1333.

102.   A. Schlechte, R. Niewa, M. Schmidt, G. Auffermann, Yu. Prots, W. Schnelle, D. Gnida, T. Cichorek, F. Steglich, R. Kniep,„Thermo-chemical properties and electrical resistivity of Zr-based arsenide chalcogenides”, Sci. Technol. Adv. Mater. 8 (2007) 341.

103.   A. Schlechte, Yu. Prots, R. Niewa, Th. Doert, M. Schmidt, R. Kniep,„CeAsSe – Ein neues ternäres Seltenerd-Pniktidchalkogenid”, Z. Kristallogr. Suppl. 26 (2007) 079-62-id54.

104.   B. Schüpp-Niewa, L. Shlyk, S. Kryukov, L. E. De Long, R. Niewa, „BaFe3.39(5)Ru2.61(5)O11 and BaCo1.85(6)Ru4.15(6)O11: Preparation, Crystal Structures, and Magnetic and Transport Properties of Quaternary Transition Metal Oxoruthenates”, Z. Naturforsch. 62b (2007) 753.

105.   R. Ranjan, A. Senyshyn, V. Vashook, R. Niewa, H. Boysen, F. Frey,„Structural stability of conducting oxide CaRuO3 at high temperatures”, Appl. Phys. Lett. 90 (2007) 251913.

106.   B. Schüpp-Niewa, L. Shlyk, Yu. Prots, G. Krabbes, R. Niewa,„Ba3YRu0.73(2)Al1.27(2)O8 and Ba5Y2Ru1.52(2)Al1.47(2)O13.5: New Perovskite Ruthenates with Partial Octahedra Replacement”, Z. Naturforsch. 62b (2007) 1383.

107.   A. Schlechte, R. Niewa, M. Schmidt, H. Borrmann, G. Auffermann, R. Kniep,„Crystal structure of hafnium arsenide selenide, HfAs1.69Se0.21”, Z. Kristallogr. NCS 222 (2007) 369.

108.   L. Shlyk, L. E. De Long, S. Kryukov, B. Schüpp-Niewa, R. Niewa,„Structural, magnetic and transport properties of a novel class of ferromagnetic semiconductors: SrMxRuxO11 (M = Fe, Co)”, J. Appl. Phys. 103 (2008) 07D112.

109.   T. V. Basyuk, T. Tataryn, L. O. Vasylechko, S. Fadyeev, I. I. Syvorotka, D. Trots, R. Niewa,„Phase and Structural Behaviour of the PrAlO3–LaAlO3 Pseudo-Binary System”, Synch. Rad. Natur. Sci. 7 (2008) 117.

110.   L. Shlyk, S. Kryukov, B. Schüpp-Niewa, R. Niewa, L. E. De Long,„High Temperature Ferromagnetism and Tunable Semiconductivity of (Ba,Sr)MxRuxO11 (M = Fe, Co): A New Paradigm for Spintronics”, Adv. Mater. 20 (2008) 1315.

111.   L. V. Shlyk, S. A. Kryukov, L. E. De Long, B. Schüpp-Niewa, R. Niewa, J. W. Lynn, Qing Huang, E. Arenholz, C. Piamonteze,„A Novel Class of High-TC Ferromagnetic Semiconductors”, Proceedings of the IEEE, 17th Biennial University/Government/Industry Micro/ Nano Symposium UGIM 2008 University of Louisville, Kentucky, USA, 142.

112.   F. Gäbler, W. Schnelle, A. Senyshyn, R. Niewa,„Magnetic Structure of the Inverse Perovskite (Ce3N)In”, Solid State Sci. 10 (2008) 1910.

113.   A. Schlechte, R. Niewa, B. Pedersen, M. Schmidt, H. Borrmann, R. Kniep,„As–Se-Ordnung in ZrAs1,6−δSe0,4 aus Neutronen- und Röntgenbeugung am Einkristall”, Z. Kristallogr. Suppl. 28 (2008) 1B-21.

114.   R. Niewa, D. Rau, A. Wosylus, K. Meier, M. Wessel, R. Dronskowski, U. Schwarz,„High Pressure–High Temperature Phase Transition of γ’-Fe4N”, J. Alloys Compd. 480 (2009) 76.

115.   T. V. Basyuk, L. O. Vasylechko, S. Fadyeev, I. I. Syvorotka, D. Trots, R. Niewa,„Phase and structural behaviour of the PrAlO3–LaAlO3 pseudo-binary system”, Rad. Phys. Chem. 78 (2009) S97.

116.   R. Niewa, D. Rau, A. Wosylus, K. Meier, M. Hanfland, M. Wessel, R. Dronskowski, D. Dzivenko, R. Riedel, U. Schwarz,„High pressure–high temperature single crystal growth, ab initio electronic structure calculations and equation of state of ε-Fe3N1+x”, Chem. Mater. 21 (2009) 392.

117.   T. Basyuk, L. Vasylechko, I. Syvorotka, U. Schmidt, D. Trots, R. Niewa,„Crystal structures, thermal expansion and phase transitions of mixed Pr1–xLaxAlO3 perovskites”, Physica status solidi (c) 6 (2009) 1008.

118.   A. Schlechte, R. Niewa, Yu. Prots, W. Schnelle, M. Schmidt, R. Kniep,„CeAsSe – synthesis, crystal structure, and physical properties”, Inorg. Chem. 48 (2009) 2277.

119.   U. Schwarz, A. Wosylus, M. Wessel, R. Dronskowski, M. Hanfland, D. Rau, R. Niewa,„High Pressure–High Temperature Behavior of z-Fe2N and Phase Transition to ε-Fe3N1.5”, Eur. J. Inorg. Chem. (2009) 1634.

120.   A. Schlechte, K. Meier, M. Schmidt, Yu. Prots, R. Niewa, and R. Kniep,„Crystal structure of zirconium phosphide sulphide, ZrP1.4S0.6”, Z. Kristallogr. NCS 224 (2009) 375.

121.   D. M. Trots, A. Senyshyn, L. Vasylechko, R. Niewa, T. Vad, V. B. Mikhailik, H. Kraus,„Crystal structure of ZnWO4 scintillator material in the range of 3 – 1423 K”, J. Phys.: Condens. Matter 21 (2009) 325402.

122.   A. Wosylus, U. Schwarz, L. Akselrud, M. G. Tucker, M. Hanfland, K. Rabia, C. Kuntscher, J. von Appen, R. Dronskowski, D. Rau, R. Niewa,„High-pressure Phase Transition and Properties of Cu3N: An Experimental and Theoretical Study”, Z. Anorg. Allg. Chem. 635 (2009) 1959.

123.   D. Bräunling, A. Senyshyn, R. Niewa,„Kristallstruktur der Li-reichen Nitrid-Chalkogenide Li8EN2 (E = Se, Te)”, Z. Kristallogr. Suppl. 29 (2009) 15.

124.   D. Rau, U. Schwarz, A. Wosylus, M. Wessel, R. Dronskowski, M. Hanfland, R. Niewa,„ζ-Fe2N: Hochdruck-Hochtemperatur-Verhalten und Phasenumwandlung zu ε-Fe3N1.5”, Z. Kristallogr. Suppl. 29 (2009) 82.

125.   G. V. Vajenine, C. Hoch, R. E. Dinnebier, A. Senyshyn, R. Niewa,„A temperature-dependent structural study of anti-ReO3-type Na3N: to distort or not to distort?”, Z. Anorg. Allg. Chem. 636 (2010) 94.

126.   R. Niewa, L. Shlyk, B. Schüpp-Niewa, L. E. De Long,„Crystal Structures of Ternary Ruthenium Ferrites SrM2±xRuxO11 with M = Fe, Co and Magnetic and Transport Properties of Al-doped Single Crystals”, Z. Anorg. Allg. Chem. 636 (2010) 331.

127.   T. Cichorek, Ł. Bochenek, R. Niewa, M. Schmidt, A. Schlechte, R. Kniep, F. Steglich,„Electron scattering off structural two-level systems in ZrAs1.595(3)Se0.393(1)”, J. Phys.: Conf. Ser. 200 (2010) 012021.

128.   T. Basyuk, L. Vasylechko, S. Fadeev, V. Berezovets, D. Trots, R. Niewa,„Phase and structural behaviour of the PrAlO3–SmAlO3 system”, Acta Physica Polonica A 117 (2010) 98.

129.   D. Bräunling, O. Pecher, D. M. Trots, A. Senyshyn, D. A. Zherebtsov, F. Haarmann, R. Niewa,„Synthesis, Crystal Structure and Li-Motion of Li8SeN2 and Li8TeN2”, Z. Anorg. Allg. Chem. 636 (2010) 936.

130.   F. Gäbler, R. Niewa,„Polymorphism of Eu8In3 and the Solid Solution (CaxEu1–x)8In3”, Z. Anorg. Allg. Chem. 636 (2010) 1803.

131.   A. Schlechte, G. Auffermann, M. Bednarski, Ł. Bochenek, M. Böhme, T. Cichorek, R. Niewa, N. Oeschler, M. Schmidt, F. Steglich, R. Kniep,„Crystal Chemistry and Physical Properties of the Non-Magnetic Kondo-Compound HfAs1.7Se0.2”, ChemPhysChem 11 (2010) 2639.

132.   F. Gäbler, D. Bräunling, A. Senyshyn, W. Schnelle, R. Niewa,„Nitrides with Inverse K2[NiF4] Structure: (R1–xCa3+xN1–x/3)Bi2 with R = Rare-Earth Metal”, Z. Anorg. Allg. Chem. 636 (2010) 1222.

133.   B. Schüpp-Niewa, L. Shlyk, L. Akselrud, Yu. Prots, R. Niewa,„Crystal structure of the incommensurate composite ruthenate [Ba]1.30[(Ru,Cu)O3]”, Z. Kristallogr. 225 (2010) 274.

134.   R. Niewa, A. Czulucki, M. Schmidt, G. Auffermann, T. Cichorek, M. Meven, B. Pedersen, F. Steglich, R. Kniep,„Crystal Structure Investigations of ZrAsxSey (x > y, x + y ≤ 2) by Single Crystal Neutron Diffraction at 300 K, 25 K and 2.3 K”, J. Solid State Chem. 183 (2010) 1309.

135.   R. F. Zhang, D. Legut, R. Niewa, A. S. Argon, S. Veprek,„Shear-induced structural transformation and plasticity in ultra-incompressible ReB2 limit its hardness”, Phys. Rev. B 82 (2010) 104104.    

136.   L. Shlyk, R. Niewa, L. E. De Long,„Anomalous Hall Effect in High Temperature Ferrimagnetic Semiconductors BaFexRuxO11”, Phys. Rev. B 82 (2010) 134432.

137.   L. E. De Long, L. Shlyk, G. Cao, R. Niewa,„The Promise of Strong Spin-Orbit Coupling: Novel Materials with Novel Properties for Novel Devices”, Proceedings of the IEEE, International Conference on Electromagnetics in Advanced Applications ICEAA'10, Sydney, Australien, 591.

Publikationen 1994 -1999

1.    H. Jacobs, R. Niewa,„Synthesis and crystal structure of a sodium nitrido tungstate(VI), Na3WN3”, Eur. J. Solid State Inorg. Chem. 31 (1994) 105.

2.    R. Niewa, H. Jacobs,„Synthesis and crystal structure of alkali metal oxo nitrido dimetallates(VI), A6[M2N4O3] (A = K, Rb, Cs; M = Mo, W)”, J. Alloys Compd. 217 (1995) 38.

3.    R. Niewa, H. Jacobs, H. M. Mayer,„Re-evaluation of the crystal structure of lithium zirconium nitride, Li2ZrN2, by neutron powder diffraction”, Z. Kristallogr. 210 (1995) 513.

4.    R. Niewa, H. Jacobs,„Crystal structure of hafnium(IV) chloride, HfCl4”, Z. Kristallogr. 210 (1995) 687.

5.    R. Niewa, H. Jacobs,„Na2K[WN3] and Na11Rb[(WN3)4], two new alkali metal nitrido tungstates(VI) with closely related structures”, J. Alloys Compd. 233 (1996) 61.

6.    R. Niewa, H. Jacobs,„Na5Rb[(WN3)2] and Na5Cs[(WN3)2], two new sodium nitrido tungstates(VI) with the heavier alkali metals rubidium and cesium”, J. Alloys Compd. 234 (1996) 171.

7.    R. Niewa, H. Jacobs,„Cs5[Na{W4N10}]: The First Framework Nitridotungstate(VI)”, Z. Anorg. Allg. Chem. 622 (1996) 881.

8.    R. Niewa, H. Jacobs,„Na2K13[W7N19] the first nitrido tungstate(VI) with layers of corner-sharing nitrogen tetrahedra around tungsten”, J. Alloys Compd. 236 (1996) 13.

9.    R. Niewa, H. Jacobs,„NaRb4[(WN2.5O0.5)2] and NaCs4[(WN2.5O0.5)2], the first oxo nitrido tungstates(VI) with infinite chains [WX2X2/22.5–] with X = N, O”, Eur. J. Solid State Inorg. Chem. 33 (1996) 463.

10.  R. Niewa, H. Jacobs,„Group V and VI Alkali Nitridometalates: A Growing Class of Compounds with Structures Related to Silicate Chemistry”, Chem. Rev. 96 (1996) 2053.

11.  Th. Sichla, R. Niewa, U. Zachwieja, R. Eßmann, H. Jacobs,„Synthesis, Crystal Structure and IR Investigations of [(NH3)5V-O-V(NH3)5]I4·NH3 and [(NH3)5Ti-O-Ti(NH3)5]I4·NH3”, Z. Anorg. Allg. Chem. 622 (1996) 2074.

12.  H. Jacobs, R. Niewa, Th. Sichla, A. Tenten, U. Zachwieja,„Metal nitrogen compounds with unusual chemical bonding: nitrides, imides, amides and ammine complexes”, J. Alloys Compd. 246 (1997) 91.

13.  D. Zellmer, R. Niewa, H. Preut, R. P. Kreher,„A Functionalized Dimethyl 1,3-Butadiene-2,3-dicarboxylate”, Acta Crystallogr. C53 (1997) 251.

14.  R. Niewa, F. J. DiSalvo, D.-K. Yang, D. B. Zax, H. Luo, W. B. Yelon,„Synthesis, crystal structure and properties of a lithium manganese nitride, (Li,Mn)2N”, J. Alloys Compd. 266 (1998) 32.

15.  R. Niewa, G. V. Vajenine, F. J. DiSalvo, H. Luo, W. B. Yelon,„Unusual Bonding in Ternary Nitrides: Preparation, Structure and Properties of Ce2MnN3”, Z. Naturforsch. 53b (1998) 63.

16.  R. Niewa, G. V. Vajenine, F. J. DiSalvo,„Synthesis and Crystal Structure of Ternary Sulfides A3MS4 with A = Na, Rb; M = Nb, Ta”, J. Solid State Chem. 139 (1998) 404.

17.  R. Niewa, F. J. DiSalvo,„Recent developments in nitride chemistry”, Chem. Mater. 10 (1998) 2733.

18.  R. Niewa, F. J. DiSalvo,„Breaking up Chains: The Nitridocuprates(I) Ba[CuN], Ba16[(CuN)8][Cu2N3][Cu3N4] and Ca4Ba[CuN2]2”, J. Alloys Compd. 279 (1998) 153.

19.  R. Stahl, R. Niewa, H. Jacobs,„Synthese und Kristallstruktur von Na2Zn(OH)4”, Z. Anorg. Allg. Chem. 625 (1999) 48.

20.  G. A. Landrum, R. Dronskowski, R. Niewa, F. J. DiSalvo,„Electronic Structure and Bonding in Ce (Nitride) Compounds:Trivalent versus Tetravalent Cerium”, Chem. Eur. J. 5 (1999) 515.

21.  D. Zellmer, R. Niewa, R. P. Kreher,„A functionalized dimethyl maleate (maleic acid dimethyl ester)”, Acta Crystallogr. C 55 (1999) 823.

22.  M. Ludwig, R. Niewa, R. Kniep,„Dimers [Al2N6]12– and Chains [AlN4/23–] in the Crystal Structures of Ca6[Al2N6] and Ba3[Al2N4]”, Z. Naturforsch. 54b (1999) 461.

Patente

1.    L. Shlyk, S. Kryukov, L. E. De Long, B. Schüpp-Niewa, R. Niewa,„A Novel Class of Ferromagnetic Semiconductors”, U.S. Patent No. 8,357,309, erteilt am 22.01.2013.

Bücher und Buchbeiträge

1.  T. M. M. Richter, R. Niewa, Chemistry of Ammonothermal Synthesis, in D. Gregory (Ed.): Innovative Inorganic Synthesis, MDPI AG Basel, Schweiz, 2015, pp. 73. ISBN 978-3-03842-067-5, ISBN 978-3-03842-066-8.

2. D. A. Vinnik, S. A. Gudkova, R. Niewa, Growth of lead and aluminum substituted barium hexaferrite single crystals from lead oxide flux, in A. A. Radionov (Ed.): Materials Engineering and Technologies for Production and Processing, Chapter 1: New Functional Materials and Elements of Technologies, Trans Tech Publications Ltd., Zürich, Schweiz, 2016, pp. 3. ISBN 978-3-03835-681-3, doi: 10.4028/www.scientific.net/MSF.843.

3. P. Höhn, R. Niewa, Nitrides of Non-Maingroup Elements, in R. Dronskowski, S. Kikkawa, A. Stein (Eds.): Handbook of Solid State Chemistry, Volume 1: Materials and Structure of Solids, Wiley-VCH, Weinheim, Deutschland, 2017, pp. 251. ISBN 978-3-527-32587-0.

4. Niewa, Significance of ammonothermal synthesis for nitride materials, in E. Meissner, R. Niewa (Eds.): Springer Series in Materials Science, Volume 304: Ammonothermal Synthesis and Crystal Growth of Nitrides – Chemistry and Technology, Springer, 2021, pp. 3. ISBN 978-3-030-56304-2, 978-3-030-56305-9. doi.org/10.1007/978-3-030-56305-9.

5. Meissner, D. Jockel, M. Koch, R. Niewa, A new perspective on growth of GaN from the basic ammonothermal regime, in E. Meissner, R. Niewa (Eds.): Springer Series in Materials Science, Volume 304: Ammonothermal Synthesis and Crystal Growth of Nitrides – Chemistry and Technology, Springer, 2021, pp. 77. ISBN 978-3-030-56304-2, 978-3-030-56305-9. doi.org/10.1007/978-3-030-56305-9.

6. Niewa, Intermediates in ammonothermal synthesis and crystal growth, in E. Meissner, R. Niewa (Eds.): Springer Series in Materials Science, Volume 304: Ammonothermal Synthesis and Crystal Growth of Nitrides – Chemistry and Technology, Springer, 2021, pp. 227. ISBN 978-3-030-56304-2, 978-3-030-56305-9. doi.org/10.1007/978-3-030-56305-9.

7. Schnick, N. Cordes, M. Mallmann, R. Niewa, E. Meissner, Ammonothermal materials, in E. Meissner, R. Niewa (Eds.): Springer Series in Materials Science, Volume 304: Ammonothermal Synthesis and Crystal Growth of Nitrides – Chemistry and Technology, Springer, 2021, pp. 331. ISBN 978-3-030-56304-2, 978-3-030-56305-9. doi.org/10.1007/978-3-030-56305-9.

Dieses Bild zeigt Rainer Niewa

Rainer Niewa

Prof. Dr. rer. nat.

Professor

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