Phase Transformations of CuCrS 2: Structural and Chemical Study Full article
| Journal |
Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779 |
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| Output data | Year: 2009, Volume: 50, Number: 2, Pages: 288-295 Pages count : 8 DOI: 10.1007/s10947-009-0040-0 | ||||
| Tags | Composition, Partially ordered phases, Phase transitions, Structure, Ternary copper-chromium-sulfide | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Президиум РАН | 5.2.2 |
| 2 | International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union | 06-1000013-9002 |
Abstract:
The structure and composition of the CuCrS2 powder synthesized by sulfidation of a mixture of oxides Cu2O:Cr2O3 = 1:1 at 850°C and cooled to room temperature at a rate of 60°C/min were studied by X-ray powder diffraction and differentiating solution. A rhombohedral CuCrS2 phase (space group R3m) was found, which was stoichiometric in composition and had disordering in the copper sublattice because copper was arranged at the tetrahedral and octahedral sites with occupancy 10% at the latter. The structure of CuCrS2, in which the octahedra were occupied by copper atoms at room temperature, was found for the first time; in known structures, the copper atoms occupied only the tetrahedral sites, while the probability of octahedral occupation appeared around 400°C (order-disorder transition). The partially disordered CuCrS2 phase is intermediate on the route to complete ordering. The quickly cooled CuCrS2 powder is unstable; after the second heating to 500°C with prolonged annealing at 390°C→180°C→80°C→25°C, its transition to the stable state was accompanied by liberation of 2–4 wt.% Cu9S5. The real composition of ternary sulfide after isolation of the Cu9S5 phase is discussed using the data of the structural method, differential dissolution, and magnetic measurements.
Cite:
Vassilieva I.G.
, Kardash T.Y.
, Malakhov V.V.
Phase Transformations of CuCrS 2: Structural and Chemical Study
Journal of Structural Chemistry. 2009. V.50. N2. P.288-295. DOI: 10.1007/s10947-009-0040-0 WOS Scopus РИНЦ ANCAN OpenAlex
Phase Transformations of CuCrS 2: Structural and Chemical Study
Journal of Structural Chemistry. 2009. V.50. N2. P.288-295. DOI: 10.1007/s10947-009-0040-0 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Васильева И.Г.
, Кардаш Т.Ю.
, Малахов В.В.
Фазовые превращения CuCrS2: структурное и химическое исследование
Журнал структурной химии. 2009. Т.50. №2. С.302-310. RSCI РИНЦ
Фазовые превращения CuCrS2: структурное и химическое исследование
Журнал структурной химии. 2009. Т.50. №2. С.302-310. RSCI РИНЦ
Dates:
| Submitted: | Jul 16, 2008 |
| Published print: | Apr 1, 2009 |
| Published online: | May 15, 2009 |
Identifiers:
| Web of science: | WOS:000266091800012 |
| Scopus: | 2-s2.0-65649113240 |
| Elibrary: | 13597933 |
| Chemical Abstracts: | 2009:589331 |
| Chemical Abstracts (print): | 152:182495 |
| OpenAlex: | W1980751284 |