Magnetoresistance in metallic crystals of La1-xSrxCoO3
Magnetoresistance in metallic crystals of La1-xSrxCoO3
复制标题
La1-xSrxCoO3 金属晶体中的磁阻
DOI：
10.1143/jpsj.64.1885
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发表时间：
1995
影响因子：
1.7
通讯作者：
Y. Tokura
中科院分区：
文献类型：
--
作者：
S. Yamaguchi;H. Taniguchi;H. Takagi;T. Arima;Y. Tokura
研究了具有钙钛矿结构的La 1- x Sr x CoO 3 ( x =0.20和0.30)金属晶体的磁输运性质。在铁磁转变温度（T c ）附近，发现了相当大的负磁阻（MR）。 MR 的大小与高于 T c 的磁化强度的平方成正比，并且随着接近金属-绝缘体组成相边界而似乎增强。结果根据双重交换机制进行了讨论。
Magnetotransport properties have been investigated for metallic crystals of La 1- x Sr x CoO 3 ( 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.