Electrical and magnetic studies of CuxCoyCrzSe4 single crystals
| Autor: | E. Maciążek, K. Bärner, I. Okonska-Kozlowska, Joachim Kusz, Tadeusz Groń, Ch. Kleeberg, J. Heimann |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
010302 applied physics
Curie–Weiss law Materials science Condensed matter physics 02 engineering and technology Magnetic semiconductor 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Magnetic susceptibility Electronic Optical and Magnetic Materials Paramagnetism Ferromagnetism Electrical resistivity and conductivity Ferrimagnetism 0103 physical sciences Curie temperature Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Physica B: Condensed Matter. 254:84-91 |
| ISSN: | 0921-4526 |
| Popis: | The electrical and magnetic properties of the spinels with the general chemical formula of CuxCoyCrzSe4 (where y=0.06, 0.1, 0.11 and 0.23) have been studied. Ferromagnetic ordering with a Curie temperature of 340 K, a Curie–Weiss paramagnetic temperature of 350 K and the p-type metallic conductivity were established for samples with low Co content y (up to 0.11). The sample with the highest Co content (y=0.23) showed a ferrimagnetic behavior and n-type electrical semiconductivity. These effects are interpreted in terms of the magnetic double exchange and the Kramers–Anderson super-exchange interactions and low spin state configurations of cations including non-stoichiometry. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect