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Effects of the thickness asymmetry of nanostructured exchange-coupled trilayers on their dynamic magnetization switching

Authors
Kim, K. S.Lee, K. J.Lim, S. H.
Issue Date
13-10월-2008
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.93, no.15
Indexed
SCIE
SCOPUS
Journal Title
APPLIED PHYSICS LETTERS
Volume
93
Number
15
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/122565
DOI
10.1063/1.3001805
ISSN
0003-6951
Abstract
The effects of thickness asymmetry (Delta t) on the dynamic magnetization switching of exchange-coupled trilayers are investigated in this study. Elliptical thin films that have lateral dimensions of 200x100 nm(2) are considered. A significant difference in the dynamic switching behavior is observed depending on Delta t. Both the switching field and the switching time decrease as Delta t increases. A Fourier analysis of the magnetization oscillation, which is followed by the initial coherent rotation, shows multiple oscillation frequencies. This tendency is more pronounced at a larger Delta t. The main oscillation frequency tends to increase with an increase in Delta t. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3001805]
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LIM, Sang Ho
공과대학 (신소재공학부)
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