THEORETICAL-STUDIES ON THE DOUBLE EXCHANGE FERROMAGNET

被引：4
|
作者：
OKABE, T
机构：
[1] Department of Physics, Faculty of Science, Kyoto University
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1995年 / 64卷 / 09期
关键词：
LA(1-X)M(X)MNO(3); DOUBLE EXCHANGE MODEL;
D O I：
10.1143/JPSJ.64.3442
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Based on the double exchange mechanism, a model for ferromagnet La(1-x)M(x)MnO(3) (M=Ca2+, Sr2+, Ba2+, or Pb2+) is developed. Our theory can well describe several Features such as the crossing behaviour of the magnetization curve for different composition x and the steep increase of resistivity around T-c. We use only one free parameter, the e(g)-derived band width W similar to 0.5 eV. The Curie temperature T-c is shown as a function of x.
引用
收藏
页码：3442 / 3448
页数：7
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