DocumentCode
1449540
Title
Stability of exchange bias and thermally activated processes
Author
Stamps, R.L. ; Wee, Leonard
Author_Institution
Dept. of Phys., Western Australia Univ., Nedlands, WA, Australia
Volume
36
Issue
5
fYear
2000
fDate
9/1/2000 12:00:00 AM
Firstpage
3170
Lastpage
3172
Abstract
A theory for exchange bias in ferromagnet/antiferromagnet bilayers is discussed. The mechanism depends on partial wall formation in the antiferromagnet, and it is shown that stability depends on the existence of an easy plane anisotropy and a minimum value of exchange coupling between the ferromagnet and the antiferromagnet. The effect of thermal fluctuations is also examined in terms of thermally activated processes. Consequences for field rate dependence of bias and coercive fields is described
Keywords
coercive force; exchange interactions (electron); interface magnetism; magnetic anisotropy; magnetic domain walls; coercive field; easy plane anisotropy; exchange bias; exchange coupling; ferromagnet/antiferromagnet bilayer; partial domain wall; stability; temperature dependence; thermal activation; thermal fluctuations; Anisotropic magnetoresistance; Antiferromagnetic materials; Displacement measurement; Equations; Fluctuations; Hysteresis; Magnetic field measurement; Magnetization; Temperature dependence; Thermal stability;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.908725
Filename
908725
Link To Document