Magnetic relaxation of exchange biased Pt/Co multilayers studied by time-resolved Kerr microscopy

被引：34
|
作者：
Romanens, F
Pizzini, S
Yokaichiya, F
Bonfim, M
Pennec, Y
Camarero, J
Vogel, J
Sort, J
Garcia, F
Rodmacq, B
Dieny, B
机构：
[1] CNRS, Lab Louis Neel, F-38042 Grenoble, France
[2] CNRS, IPMC, F-38042 Grenoble, France
[3] CEA Grenoble, DSM, URA CEA, SPINTEC, F-38054 Grenoble, France
[4] CEA Grenoble, STIC, SPM, CNRS, F-38054 Grenoble, France
来源：
PHYSICAL REVIEW B | 2005年 / 72卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.72.134410
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetization relaxation of exchange-biased (Pt/Co)(5)/Pt/IrMn multilayers with perpendicular anisotropy was investigated by time-resolved Kerr microscopy. Magnetization reversal occurs by nucleation and domain wall propagation for both descending and ascending applied fields, but a much larger nucleation density is observed for the descending branch, where the field is applied antiparallel to the exchange bias field direction. These results can be explained by taking into account the presence of local inhomogeneities of the exchange bias field.
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页数：7
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