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We present the study of the giant magnetoresistance effect in ferromagnetically ordered thin film and bulk based on the Hund{close_quote}s rule coupling between the mobile {ital d} electron and the core spin of Mn ions. It has been shown that the resistivity is proportional to the spin{endash}spin correlation functions, a maximum resistivity appears near the critical point in absence of magnetic field and an applied field drives the resistivity peak to higher temperature and reduces the peak value, which is in agreement with the experiments. The giant magnetoresistance effect in thin film is attributed to the spin-correlation-dependent scattering and the low-dimensional character. {copyright} {ital 1996 American Institute of Physics.}
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| Authors: |
Zou, L. [Institute of Solid State Physics, Academia Sinica, P.O. Box 1129, Hefei 230031 (China)];
Gong, X.G.;
Zheng, Q. [CCAST (World Laboratory), P.O. Box 8730, Beijing, 100080]|[Institute of Solid State Physics, Academia Sinica, P.O. Box 1129, Hefei 230031 (China)];
Pan, C.Y. [Physics Department, Center of Magnetism in Information Technology, Utah State University, Logan, Utah 84332 (United States)]
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| Publication Date: | 1996 Apr 01 |
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| OSTI Identifier: | 280034 |
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| Report Number(s): | CONF-951101-- |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: Journal of Applied Physics; Journal Volume: 79; Journal Issue: 8; Conference: 40. conference on magnetism and magnetic materials, Philadelphia, PA (United States), 6-9 Nov 1995; Other Information: PBD: Apr 1996 |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: pp. 5162-5164 |
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| Other Number(s): | Journal ID: JAPIAU; ISSN 0021-8979; TRN: 9608M0088 |
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| Subject: | 36 MATERIALS SCIENCE; FERROMAGNETIC MATERIALS; MAGNETORESISTANCE; THIN FILMS; SEMICONDUCTOR MATERIALS; RARE EARTH COMPOUNDS; MANGANESE OXIDES; TEMPERATURE DEPENDENCE; J-J COUPLING |
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| Update Date: | 2009 Dec 16 |
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