Multiferroically composed exchange bias systems

被引：14

作者：

Borisov, Pavel ^{[1
]}

Hochstrat, Andreas ^{[1
]}

Chen, Xi ^{[1
]}

Kleemann, Wolfgang ^{[1
]}

机构：

[1] Univ Duisburg Essen, Angew Phys, D-47048 Duisburg, Germany

来源：

PHASE TRANSITIONS | 2006年 / 79卷 / 12期

关键词：

magnetoelectricity; exchange bias; coercive field; susceptibility; domain walls;

D O I：

10.1080/01411590601067318

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Magnetoelectric (ME) antiferromagnetic Cr2O3, being exchange coupled to a ferromagnetic multilayer (Pt/Co/Pt)(n), n >= 1, is treated as a multiphase multiferroic material with sophisticated multifunctional properties. It is shown that the exchange bias (EB) of the ferromagnetic hysteresis loop cannot only be controlled by the magnetic freezing field, H-fr, but additionally also by an external electric freezing field, E-fr, via the ME effect of Cr2O3. Either a gradual shift or complete switching from -H-EB to +H-EB on the magnetic field axis are possible. Here the influence of E-fr at constant H-fr on both the coercive field, H-c, and the anti ferromagnetic domain wall susceptibility, Delta chi, and on the temperature dependence of the ME controlled quantities H-c(T) and H-EB(T) is reported.

引用

页码：1123 / 1133

页数：11

共 36 条

[21] Coercivity enhancement in exchange biased systems driven by interfacial magnetic frustration [J].