Journal of Inorganic Materials >
Electrical Transport Behavior and Magnetoresistance Properties of (1-x)La2/3Ca 1/3 MnO 3/xSb2O 5 Composites
Department of Physics, Huazhong University of Science & Technology, Wuhan 430074, China
Received date: 2006-03-27
Revised date: 2006-05-16
Online published: 2007-03-20
The composites with the nominal composition of (1-x)La2/3Ca 1/3 MnO 3/xSb2O 5 were fabricated. The study of temperature dependence of resistivity at zero field shows that the metal-insulator transition temperature (T p) and the resistivity of the composites are dependent on Sb2O5 addition level x. When x<3%, T p shifts towards low temperature and resistivity increases with the increase of x. But T p shifts towards high temperature and resistivity decreases with further increasing of x. The measurement for temperature dependence of magnetoresistance (MR) indicates that MR effect can be largely enhanced in the composites with small Sb2O5 addition.
YUAN Li , MIAO Ju-Hong , WANG Yong-Qiang , LIU Li , YUAN Song-Liu . Electrical Transport Behavior and Magnetoresistance Properties of (1-x)La2/3Ca 1/3 MnO 3/xSb2O 5 Composites[J]. Journal of Inorganic Materials, 2007 , 22(2) : 319 -322 . DOI: 10.3724/SP.J.1077.2007.00319
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