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Exchange-bias-like effects in L1_0 (111)-oriented FePt based pseudo spin valves

Journal article
Authors C.-L. Zha
Pranaba Muduli Kishor
Josep Nogués
Johan Åkerman
Published in Journal of Physics: Conference Series
Volume 200
Pages 072110 (4 pages)
ISSN 1742-6596
Publication year 2010
Published at Department of Physics (GU)
Pages 072110 (4 pages)
Language en
Links dx.doi.org/10.1088/1742-6596/200/7/...
Keywords magnetism
Subject categories Magnetism

Abstract

The coupling between hard FePt/CoFe and soft CoFe/NiFe layers through a Cu spacer has been studied in L10 (111) FePt(20)/CoFe(1.5)/Cu(3.5 or 4.5)/CoFe(2)/NiFe(3) (in nm) pseudo spin valves. The soft layer hysteresis loops exhibit clear shifts in the ¯eld axis (exchange bias-like) and a marked coercivity enhancement. The thickness of the Cu layer or the interface roughness in°uence the exchange bias properties of the systems. This interlayer coupling arises from the competition between dipolar and RKKY interactions between the layers.

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