National Changhua University of Education Institutional Repository : Item 987654321/18520

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NCUEIR > College of Science > Department of Physics > Periodical Articles > Item 987654321/18520

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/18520

Title:	Size Effects on Switching Field of Ring-shaped Permalloy Elements
Authors:	Chang, C. C.;Chang, Y. C.;Wu, Jong-Ching;Wei, Z. H.;La, M. F.;Chang, C. R.;Kuo, J. H.
Contributors:	物理學系
Keywords:	Permalloy ring;Magnetoresistance;Coherent rotation
Date:	2004-11
Issue Date:	2014-06-06T07:18:08Z
Publisher:	Elsevier
Abstract:	The magnetization switching behavior of permalloy ring elements as a function of ring diameter and film thickness by magnetoresistance measurement is presented. The permalloy ring elements, with diameters of 2–5 μm and a thickness of 14–66 nm, were fabricated by electron beam lithography through a lift-off process. The switching field for the transition from the vortex state to the onion state increases with decreasing size. Furthermore, the switching field increases with increasing thickness up to a critical value of about 53–65 nm, over which the switching field tends to decrease with increasing thickness.
Relation:	Journal of Magnetism and Magnetic Materials, 282: 351-354
Appears in Collections:	[Department of Physics] Periodical Articles

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