Bimodal distribution of blocking temperature in exchange-biased ferromagnetic/antiferromagnetic bilayers

被引：61

作者：

Baltz, V. ^{[1
]}

Rodmacq, B. ^{[1
]}

Zarefy, A. ^{[2
]}

Lechevallier, L. ^{[2
]}

Dieny, B. ^{[1
]}

机构：

[1] UJF, CEA, CNRS, INAC,Grenoble INP,SPINTEC,UMR 8191, F-38054 Grenoble, France

[2] Univ Rouen, CNRS, GPM, UMR 6634, F-76801 St Etienne, France

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 05期

关键词：

ANISOTROPY; FILMS; MODEL; SYSTEMS;

D O I：

10.1103/PhysRevB.81.052404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The blocking temperature (T-B) distribution of various polycrystalline ferromagnetic (F)/antiferromagnetic (AF) bilayers exhibits two distinct peaks. This is ascribed to the existence of two families of magnetic entities determining the temperature dependence of exchange bias. One is formed by the AF grains which undergo thermally activated magnetic reversal. The other is formed by F/AF disordered interfacial spins which exhibit spin-glass-like behavior. The bulk versus interfacial nature of these two families is indicated by the dependence of the TB distribution on the AF thickness.

引用

页数：4

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