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NCUEIR > College of Science > Department of Physics > Periodical Articles > Item 987654321/18517

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/18517

Title:	Magnetization Reversals in Elliptical Permalloy Particles
Authors:	Wei, Zung-Hang;Lai, Mei-Feng;Chang, Ching-Ray;Usov, N. A.;Wu, Jong-Ching;Lai, Jun-Yang
Contributors:	物理學系
Keywords:	Magnetization reversal;Micromagnetic simulation;Stoner–Wohlfarth model
Date:	2004-07
Issue Date:	2014-06-06T07:18:06Z
Publisher:	IEEE
Abstract:	We use the micromagnetic simulation to study the reversible and irreversible magnetization processes of the single-domain elliptical permalloy particles. The magnetization curve of the reversible process, which has no hysteresis, obtained by applying the field along the hard axis of the elliptical particle is almost linear, as is the case in the single-domain ellipsoidal particle. On the other hand, due to the occurrence of the nonuniform reversal, the switching field of the irreversible process, which has hysteresis, is reduced significantly compared to that predicted by the Stoner-Wohlfarth model. The nucleation fields of elliptical particles are calculated as a function of ellipse's aspect ratio, and the function reveals a step-like behavior.
Relation:	IEEE Transactions on Magnetics, 40(4): 2107-2109
Appears in Collections:	[Department of Physics] Periodical Articles

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