Magnetic viscosity measurements reveal reversal asymmetry in exchange-biased bilayers

被引：30

作者：

Leighton, C ^{[1
]}

Schuller, IK ^{[1
]}

机构：

[1] Univ Calif San Diego, Phys Dept 0319, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.63.174419

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have used time-dependent magnetization measurements to probe the asymmetry in the magnetization-reversal mechanisms in exchange-biased MnF2/Fe bilayers. Analysis of the magnetic viscosity on the magnetizing and demagnetizing sides of the exchange-shifted hysteresis loops reveals a striking asymmetry. This is due to different mechanisms for reversal on the two sides of the loop as elucidated previously by polarized-neutron reflectometry and anisotropic-magnetoresistance measurements. The viscosity data reveal asymmetric features that are intrinsically related to the nature of the exchange anisotropy.

引用

页数：5

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