Contributions to the investigation of inorganic non-stoichiometric compounds. XXXVI: Tungsten-rich solid solution series of (Nb, W)Ox phases having block structures ― preparation by chemical transport
作者： A. Hussain , R. Gruehn
关键词: Crystallography 、 Stoichiometry 、 Tungsten 、 Chemistry 、 Inorganic chemistry 、 Block (periodic table) 、 Solid solution series 、 Solid solution
摘要: Attempts have been made to prepare crystals of solid solution series having block structures with building elements [3×4], [4×4], [4×5], and [5×5] octahedra in the system Nb2O5/WO3/NbO2 by chemical transport reactions various agents. Crystals about 6 mm length these compounds, however, prepared a nearly isothermal HgCl2 as mineralizer. The compositional limit four has somewhat extended compared reported values. Beitrage zur Untersuchung anorganischer nichtstochiometrischer Verbindungen. XXXVI. Wolframreiche Mischkristalle der (Nb, W)Ox-Phasen mit Blockstrukturen — Darstellung durch chemischen Transport Es wurden verschiedene Transportmittel erprobt, um von den Mischkristallreihen des Systems einem Aufbau aus [4×5] und [5×5]-Blocken brauchbare Kristalle zu erhalten. Es gelang, nahezu isothermen Transport als Mineralisator ≈6 Lange darzustellen. Zugleich konnte das Existenzgebiet jeder vier noch etwas uber die fruher gefundenen Grenzen hinaus erweitert werden.
sci-hub.se 参考文章(11)
Jeremy K. Burdett, Perspectives in structural chemistry Chemical Reviews. ,vol. 88, pp. 3- 30 ,(1988) , 10.1021/CR00083A001
H. Schornstein, R. Gruehn, Experimente und Modellrechnungen zum chemischen Transport von WO2 mit HgCl2 oder HgBr2 Zeitschrift für anorganische und allgemeine Chemie. ,vol. 561, pp. 103- 118 ,(1988) , 10.1002/ZAAC.19885610112
Hiroshi Kodama, Masaru Goto, Crystal growth of NbO2 by chemical transport method Journal of Crystal Growth. ,vol. 29, pp. 222- 224 ,(1975) , 10.1016/0022-0248(75)90231-6
E. Salje, B. Güttler, Anderson transition and intermediate polaron formation in WO3-xTransport properties and optical absorption Philosophical Magazine Part B. ,vol. 50, pp. 607- 620 ,(1984) , 10.1080/13642818408238882
C Ruscher, E Salje, A Hussain, The effect of high polaron concentration on the polaron transport in NbO2.5-x: optical and electrical properties Journal of Physics C: Solid State Physics. ,vol. 21, pp. 3737- 3749 ,(1988) , 10.1088/0022-3719/21/20/009
R. S. Roth, A. D. Wadsley, Multiple phase formation in the binary system Nb2O5–WO3. I. Preparation and identification of phases Acta Crystallographica. ,vol. 19, pp. 26- 32 ,(1965) , 10.1107/S0365110X65002712
A. Hussain, B. Reitz, R. Gruehn, Contributions to the investigation of inorganic non‐stoichiometric compounds. XXXI. A New NbOx Phase with ß‐ZrNb24O62 structure Zeitschrift für anorganische und allgemeine Chemie. ,vol. 535, pp. 186- 194 ,(1986) , 10.1002/ZAAC.19865350421
J.G. Allpress, A.D. Wadsley, Multiple phase formation in the binary system Nb2O5WO3 Journal of Solid State Chemistry. ,vol. 1, pp. 28- 38 ,(1969) , 10.1016/0022-4596(69)90005-X
J.-H. M�ller, R. Gruehn, Beiträge zur Untersuchung anorganischer nichtstöchiometrischer Verbindungen. XXXV [1, 2]. Reduktion von Blockstrukturen im Elektronenmikroskop ‐ in situ ‐ Beobachtung einer topotaktischen Reaktion im System Nb2O5/WO3 Zeitschrift für anorganische und allgemeine Chemie. ,vol. 568, pp. 85- 94 ,(1988) , 10.1002/ZAAC.19895680111
R.S. Roth, J.L. Waring, Phase equilibria as related to crystal structure in the system niobium pentoxide-tungsten trioxide Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry. ,vol. 70A, pp. 281- 303 ,(1966) , 10.6028/JRES.070A.025