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Magnetoresistance Behavior of La(2-x)/3Bix/3Cal/3MnO3 (x = 0.4) |
| TANG Wei-hua1;LIANG Jing-kui1,2;LIANG Chang-lin3;SUN Ji-rong1;RAO Guang-hui1 |
| 1Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080
2International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015
3Department of Physics, Beijing Normal University, Beijing 100875
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| Cite this article: |
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TANG Wei-hua, LIANG Jing-kui, LIANG Chang-lin et al 1997 Chin. Phys. Lett. 14 453-456 |
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Abstract The magnetoresistance (MR) behavior of La(2-x)/3Bix/3Cal/3MnO3 (x = 0.4) compound was investigated. The compound exhibits complex magnetic transitions, i. e., paramagnetic-canted ferromagnetic-ferromagnetic-spin glass transitions. The temperature dependence of resistivity of the compound indicates a semiconducting behavior, and no semiconductor-metal transition was associated with these magnetic transitions. The magnetoresistance ratio exhibits a critical maximum corresponding to the canted ferromagnetic transition. A MR ratio as large as 86% was observed at 85 K. The temperature dependence of MR ratio is well described by the relation of ( ρo -ρH ) / ρo = A(M/Ms)2.
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| Keywords:
72.20.My
75.30.-m
75.30.Kz
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Published: 01 June 1997
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| PACS: |
72.20.My
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(Galvanomagnetic and other magnetotransport effects)
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75.30.-m
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(Intrinsic properties of magnetically ordered materials)
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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