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High-Pressure Synthesis of LaMS3(M=Ti, V, Cr)

✍ Scribed by S. Kikkawa; Y. Fujii; Y. Miyamoto; F. Kanamaru; A. Meerschaut; A. Lafond; J. Rouxel


Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
265 KB
Volume
139
Category
Article
ISSN
0022-4596

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✦ Synopsis


New compounds LaMS 3 with NH 4 CdCl 3 -type crystal structure could be prepared by high-pressure synthesis where M ‫؍‬ Ti, V, Cr. The high-pressure compounds were obtained above 2.5 GPa at 1375 K for M ‫؍‬Cr, above 3.5 GPa at 1375 K for M ‫؍‬ Ti, and above 5 GPa at 1475 K for M ‫؍‬ V, respectively. The crystal structure of LaCrS 3 was refined as NH 4 CdCl 3 -type structure. It has an orthorhombic crystal lattice (Pnma) with a ‫؍‬ 0.787(1), b ‫؍‬ 0.3851(7), and c ‫؍‬ 1.334(2) nm. The polycrystalline product of LaCrS 3 was semiconducting and antiferromagnetic with T N ‫؍‬ 195 K and eff ‫؍‬ 3.83 B .


πŸ“œ SIMILAR VOLUMES


High Pressure Synthesis and Polymorphism
✍ G.V. Bazuev; B.G. Golovkin; N.V. Lukin; N.I. Kadyrova; Yu.G. Zainulin πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 240 KB

cations, respectively. So, A 2 FeSbO 6 , where A is Sr, Ca, Conditions for formation of a synthetic analog of the natural are perovskites (2), Mn 2 FeSbO 6 is ilmenite (3), and mineral melanostibite with the composition Mn 2 FeSbO 6 which Cu 2 FeSbO 6 is bixbyite (C-type) (4). The reason for morcrys