Magnetic exchange interactions in perovskite LaMnO3/LaMO3 (M = Ni, Co, Cr, Fe) superlattices

被引：29

作者：

Tanaka, H ^{[1
]}

Okawa, N ^{[1
]}

Kawai, T ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 110卷 / 04期

关键词：

magnetic films and multilayers; epitaxy; exchange and superexchange;

D O I：

10.1016/S0038-1098(99)00068-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have formed ferromagnetic La1-deltaMnO3/magnetic LaMO3 (M = Ni, Co, Cr, Fe) superlattices. In [LaMnO3](m)/[LaNiO3](m) superlattices, when m greater than or equal to 2 unit cells, ferromagnetic property is same as that of single phase LaMnO3 film with T-C of 130 K. When m becomes 1 unit cell, Te is increased up to 210 K. In [LaMnO3](1)/[LaMO3](1) superlattices, the reduction (M = Cr, Fe) and enhancement (M = Co, Ni) of Te have been observed. We present the expression of Te on the basis of molecular field picture and explain that the ferromagnetism is systematically affected by neighboring magnetic layers through the interface. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：191 / 196

页数：6

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