MAGNETIC TRANSITION-TEMPERATURE OF (LA, SR)MNO3

被引：114

作者：

FURUKAWA, N

机构：

[1] Institute for Solid State Physics, University of Tokyo, Minato-ku, Tokyo 106

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1995年 / 64卷 / 08期

关键词：

TRANSITION-METAL OXIDE; MANGANESE OXIDE; DOUBLE-EXCHANGE FERROMAGNETISM; KONDO LATTICE MODEL; INFINITE DIMENSION;

D O I：

10.1143/JPSJ.64.2754

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using the Kondo lattice model with classical spins in infinite dimension, magnetic phase transition in the perovskite-type 3d transition-metal oxide La1-xSrxMnO3 is theoretically studied. On the Bethe lattice, the self-consistency equations are solved exactly. Curie temperatures in the region of double-exchange ferromagnetism O.1 less than or equal to x less than or equal to 0.25 as well as the Neel temperature at x=0 are well reproduced quantitatively. Pressure effect on the Curie temperature is also discussed.

引用

页码：2754 / 2757

页数：4

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