New magnetic semiconductors with spinel structure containing Cu, Cr, Sb, Zn, Mn and S
| Autor: | Ja.A. Kessler, L. I. Koroleva, M. Kh. Mashaev, A. G. Odintsov, D. A. Saifullaeva, M.G. Mikheev, Dmitry S. Filimonov |
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| Rok vydání: | 1995 |
| Předmět: |
Materials science
Spin glass Condensed matter physics business.industry Semiconductor materials Spinel Magnetic semiconductor engineering.material Condensed Matter Physics Magnetic susceptibility Electronic Optical and Magnetic Materials Crystallography Semiconductor engineering Curie temperature business Spontaneous magnetization |
| Zdroj: | Journal of Magnetism and Magnetic Materials. :2015-2016 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/0304-8853(94)01203-2 |
| Popis: | New compounds with spinel structure CuCr1.5+xSb0.5-xS4 (1), Cu1-yMeyCr1.5+0.5ySb0.5-0.5yS4 (Me = Zn, Co) (2), Co1.2Cr1.7Sb0.1S4 (3) and Mn1.2Cr1.7Sb0.1S4 (4) were obtained and studied in detail. All the investigated compounds are non-degenerate semiconductors. The compounds No. 1 (0 ⩽ x ⩽ 0.1) and No. 2 were found to have the magnetic properties characteristic for antiferromagnets. Compounds No. 3, 4 and No. 1 (0.2 ⩽ x ⩽ 0.3) have a spontaneous magnetization, with the Curie point of the compound No. 1 with x = 0.3, i.e. Tc = 334 K, being higher than room temperature. The re-entrant spin glass transition is observed in the compound No. 1 with x = 0.2. |
| Databáze: | OpenAIRE |
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