Antiferromagnetic coupling and enhanced magnetization in all-ferromagnetic superlattices

被引：46
作者：
Padhan, P.
Prellier, W.
Budhani, R. C.
机构：
[1] CNRS, UMR 6508, Lab CRISMAT, F-14050 Caen, France
[2] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 19期
关键词：
D O I：
10.1063/1.2202690
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The structural and magnetic properties of a series of superlattices consisting of two ferromagnetic metals La0.7Sr0.3MnO3 (LSMO) and SrRuO3 (SRO) grown on (001) oriented SrTiO3 are studied. Superlattices with a fixed LSMO layer thickness of 20 unit cells and varying SRO layer thickness show a sudden drop in magnetization on cooling through a temperature where both LSMO and SRO layers are ferromagnetic. This behavior suggests an antiferromagnetic coupling between the layers. In addition, the samples having thinner SRO layers (n < 6) exhibit enhanced saturation magnetization at 10 K. These observations are attributed to the possible modification in the stereochemistry of the Ru and Mn ions in the interfacial region.(c) 2006 American Institute of Physics.
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