Exchange bias controlled by electric current: Interplay of Joule heating and the induced field

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Exchange bias is a unidirectional magnetic anisotropy developed in a bilayer of ferromagnetic and antiferromagnetic layers. Its technical importance as a "fix layer" is seen in various spintronic devices. The exchange bias can also be a probe to investigate the antiferromagnetic layer as it partly reflects the magnetic state of the antiferromagnet. In this work, we investigated the modulation of the exchange bias by a flow of electric current in Pt/Fe50Mn50/FeNi and Cu/Fe50Mn50/FeNi. We show that the exchange bias can be modulated just by applying the current due to interplay among the Joule heating, Ampere field, and current-induced effective field. (C) 2016 The Japan Society of Applied Physics
Publisher
IOP PUBLISHING LTD
Issue Date
2016-07
Language
English
Article Type
Article
Keywords

ANISOTROPY; LAYER

Citation

JAPANESE JOURNAL OF APPLIED PHYSICS, v.55, no.7

ISSN
0021-4922
DOI
10.7567/JJAP.55.070304
URI
http://hdl.handle.net/10203/214134
Appears in Collection
PH-Journal Papers(저널논문)
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