MAGNETORESISTANCE IN METALLIC CRYSTALS OF LA1-XSRXCOO3

被引:142
作者
YAMAGUCHI, S
TANIGUCHI, H
TAKAGI, H
ARIMA, T
TOKURA, Y
机构
[1] UNIV TOKYO, INST SOLID STATE PHYS, TOKYO 106, JAPAN
[2] JOINT RES CTR ATOM TECHNOL, TSUKUBA, IBARAKI 305, JAPAN
关键词
MAGNETORESISTANCE; LA1-XSRXCOO3; DOUBLE EXCHANGE INTERACTION;
D O I
10.1143/JPSJ.64.1885
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Magnetotransport properties have been investigated for metallic crystals of La1-xSrxCoO3 (x=0.20 and 0.30) with perovskite structure. Around the ferromagnetic transition temperature (T-c), fairly large negative magnetoresistance (MR) has been found. The magnitude of the MR is proportional to square of the magnetization above T-c and appears to be enhanced as the metal-insulator compositional phase boundary is approached. The results are discussed in terms of the double exchange mechanism.
引用
收藏
页码:1885 / 1888
页数:4
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