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Antiferromagnet IrMn thickness dependence in exchange-biased perpendicular magnetic anisotropy based on CoFe/Pt/CoFe/[IrMn(t(IrMn))] multilayers

Authors
Lee, S. S.Choi, J. G.Kim, S. W.Rhee, J. R.Hwang, D. G.
Issue Date
Sep-2006
Publisher
ELSEVIER SCIENCE BV
Keywords
Interlayer exchange coupling (IEC); Perpendicular magnetic anisotropy (PMA); Exchange-biased magnetic anisotropy; CoFe/Pt/CoFe/IrMn multiplayers
Citation
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.304, no.1, pp E91 - E93
Journal Title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume
304
Number
1
Start Page
E91
End Page
E93
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/15074
DOI
10.1016/j.jmmm.2006.01.188
ISSN
0304-8853
1873-4766
Abstract
The effect of the antiferromagnetic IrMn thickness upon the magnetic properties of CoFe/Pt/CoFe/[IrMn(t(IrMn))] multilayers is studied. An oscillatory interlayer coupling (IEC) has been shown in pinned CoFe/Pt(t(Pt))/CoFe/IrMn multilayers with perpendicular anisotropy. The period of oscillation corresponds to about 2 monolayers of Pt. The oscillatory behavior of IEC depends on the nonmagnetic metallic Pt thickness and is thought to be related to the antiferromagnetic ordering induced by the IrMn layer. From the extraordinary Hall voltage amplitude (EHA) curves as function of IrMn thickness, we report that the oscillation dependence of IEC for the [CoFe/Pt/CoFe] multilayer system induced by IrMn with spacer-layer thickness is a important features of perpendicular exchange biased system. (C) 2006 Published by Elsevier B. V.
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