Non-collinear magnetization configuration in interlayer exchange coupled magnetic thin films

Title
Non-collinear magnetization configuration in interlayer exchange coupled magnetic thin films
Authors
최준우민병철김재영박병규박재현이연섭신경호
Issue Date
2011-09
Publisher
Applied physics letters
Citation
VOL 99, NO 10, 102503-1-102503-3
Abstract
Element specific magnetic hysteresis loops of the interlayer exchange coupled CoFeB/Ru/[Co/ Ni]4 structure were measured utilizing x-ray magnetic circular dichroism. It was found that the Co/Ni multilayer and the CoFeB layer have Ru thickness dependent oscillatory interlayer coupling. Due to its interlayer coupling with the perpendicularly magnetized Co/Ni multilayer, the CoFeB magnetization direction is slightly tilted out-of-plane from its in-plane magnetic easy axis. Quantitative measurements show that the tilting angle is small (<12˚) and that a small in-plane magnetic field (~50 Oe) applied to this structure will result in a completely in-plane CoFeB magnetization.
URI
http://pubs.kist.re.kr/handle/201004/40340
ISSN
0003-6951
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