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Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/18524

Title: Investigation on the Dynamics of Cross-Tie Walls in Elliptical Permalloy Elements
Authors: Chang, Y. C.;Chang, C. C.;Hsieh, W. Z.;Lee, H. M.;Wu, Jong-Ching
Contributors: 物理學系
Keywords: Cross-tie wall;Magnetic-force microscope (MFM);Magnetization switching;Magnetoresistance;Permalloy
Date: 2005-02
Issue Date: 2014-06-06T07:18:21Z
Publisher: IEEE
Abstract: The magnetization reversal of micrometer-sized permalloy ellipses having cross-tie walls was investigated by means of magnetic-force microscopy and magnetoresistance measurements. Elliptical elements were fabricated using electron-beam lithography, in which an aspect ratio from 2 to 3 and thickness of 72 nm were accordingly designed. The magnetization reversal process illustrated main wall propagation along the short axis with the external field applied in the long-axis direction, while the reversal took place through annihilation of adjacent N�el-type cores when the external field was applied in the short-axis direction. In addition, the longitudinal magnetoresistance curve showed many steps that are believed to be due to the propagation of the cross-tie wall associated with the annihilation of N�el-type cores.
Relation: IEEE Transactions on Magnetics, 41(2): 959-961
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