Structural Study of CuCr1 – xVxS2 Substitutional Solid Solutions Full article
| Journal |
Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques
ISSN: 1027-4510 , E-ISSN: 1819-7094 |
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| Output data | Year: 2010, Volume: 4, Number: 4, Pages: 640-644 Pages count : 5 DOI: 10.1134/S1027451010040178 | ||||
| Tags | MAGNETIC-PROPERTIES; TRANSITION; MAGNETORESISTANCE; INSULATOR; SULFIDES | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | 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 local structure and charged state of metal atoms in the CuCrS2 matrix and CuCr1 – xVxS2 solid solutions of substitution of vanadium for chromium (0 < x < 0.25) are studied by x-ray absorption spectros copy (XAFS) using synchrotron radiation. According to XANES spectra (nearedge fine structures), introducing vanadium does not change the charged state of matrix elements and they exist as Cu(1+), Cr(3+), V(3+), and S(2–) in the solid solution. According to EXAFS spectra (extended fine structures), introducing vanadium slightly distorts the local structures of both Cr and Cu atoms (to a greater extent for copper than for chromium). The XAFS analysis data show that vanadium only partially filled vacant positions (specified by the composition of the initial mixture) in the chromium sublattice, the majority of them being located in irregular positions of slightly distorted octahedrons consisting of sulphur atoms. It is shown that the substitution effect leads to deformation (compression) of the lattices of CuCr1 – xVxS2 samples without changing their crystallochemical structures and symmetries, but changes their magnetic structures.
Cite:
Vasilʹeva I.G.
, Kriventsov V.V.
Structural Study of CuCr1 – xVxS2 Substitutional Solid Solutions
Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2010. V.4. N4. P.640-644. DOI: 10.1134/S1027451010040178 WOS Scopus РИНЦ OpenAlex
Structural Study of CuCr1 – xVxS2 Substitutional Solid Solutions
Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2010. V.4. N4. P.640-644. DOI: 10.1134/S1027451010040178 WOS Scopus РИНЦ OpenAlex
Original:
Васильева И.Г.
, Кривенцов В.В.
Структурное изучение твердых растворов замещения CuCr1 - xVxS2
Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2010. №8. С.25-30. РИНЦ ANCAN
Структурное изучение твердых растворов замещения CuCr1 - xVxS2
Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2010. №8. С.25-30. РИНЦ ANCAN
Dates:
| Submitted: | Feb 2, 2009 |
| Published print: | Aug 1, 2010 |
| Published online: | Aug 8, 2010 |
Identifiers:
| Web of science: | WOS:000280703600017 |
| Scopus: | 2-s2.0-77955359900 |
| Elibrary: | 15332874 |
| OpenAlex: | W1995300863 |