Effect of depinning field on determination of angular-momentum-compensation temperature of ferrimagnets

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The domain-wall (DW) motion of ferrimagnets is investigated with respect to the angular-momentum-compensation temperature T A for a wide range of magnetic fields μ0 H z , ranging from the depinning to flow regimes. While the DW velocity v exhibits a maximum at T A in the flow regime regardless of μ0 H z , the temperature at which v is maximized depends on μ0 H z because of the temperature dependence of the depinning field μ0 H dep, causing difficulty in determining T A. To solve this problem, we propose a reduced coordinate μ0 H z − μ0 H dep, which reveals that v is maximized at T A even in the depinning regime. Our work suggests that μ0 H dep should be identified prior to determining T A.
Publisher
JAPAN SOC APPLIED PHYSICS
Issue Date
2018-05
Language
English
Article Type
Article
Citation

APPLIED PHYSICS EXPRESS, v.11, no.6, pp.063001

ISSN
1882-0778
DOI
10.7567/APEX.11.063001
URI
http://hdl.handle.net/10203/245436
Appears in Collection
PH-Journal Papers(저널논문)
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