GIANT NEAR-90-DEGREES COUPLING IN EPITAXIAL COFE/MN/COFE SANDWICH STRUCTURES

被引：81

作者：

FILIPKOWSKI, ME

KREBS, JJ

PRINZ, GA

GUTIERREZ, CJ

机构：

[1] USN,RES LAB,WASHINGTON,DC 20375

[2] SW TEXAS STATE UNIV,DEPT PHYS,SAN MARCOS,TX 78666

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.75.1847

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Trilayer samples of CoFe/Mn/CoFe(001) have been prepared by molecular beam epitaxy and investigated by magnetometry and ferromagnetic resonance (FMR). Very strong near-90 degrees coupling (up to 2.5 ergs/cm(2)) between the CoFe layers, with no evidence for 180 degrees coupling, was found in all but the thickest Mn-layer samples. The field dependence of the magnetization requires that the coupling energy have the algebraic form F-c = C-+(phi(1) - phi(2))(2) + C--(phi(1) - phi(2) - pi)(2) suggested recently for antiferromagnetic interlayers. The observed angular dependence of both the acoustic and optical FMR modes found can be described by this model.

引用

页码：1847 / 1850

页数：4

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