Dependence of exchange coupling in permalloy/Cr82Al18 bilayers on the constituent layer thickness

被引：20

作者：

Zhou, SM ^{[1
]}

Liu, K ^{[1
]}

Chien, CL ^{[1
]}

机构：

[1] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 09期

关键词：

D O I：

10.1063/1.372802

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Due to a weaker exchange coupling, the coercivity in permalloy/Cr82Al18 bilayers of thicknesses t(FM) and t(AF), respectively, has been found to vary as 1/t(FM)(3/2) at room temperature, a behavior previously only observed at low temperatures. At room temperature, the exchange field decreases when t(AF) is less than 40 nm and vanishes at 25 nm. Switching in wedged-permalloy/Cr82Al18 bilayers consists of two macroscopic domains with one domain wall moving along the wedge direction. (C) 2000 American Institute of Physics. [S0021-8979(00)69108-9].

引用

页码：6659 / 6661

页数：3

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