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Title: Size Dependence of Magnetization Reversal of Ring Shaped Magnetic Tunnel Junction
Authors: Chen, C. C.;Kuo, C. Y.;Chang, Y. C.;Chang, C. C.;Horng, Lance;Wu, Te-Ho;Chern, G.;Huang, C. Y.;Tsunoda, M.;Takahashi, M.;Wu, Jong-Ching
Contributors: 物理學系
Keywords: Magnetic tunnel junction rings;Size dependence;Magnetization revers
Date: 2007-03
Issue Date: 2014-06-06T07:18:43Z
Publisher: Elsevier
Abstract: The size dependence of magnetization reversal of magnetic tunnel junction (MTJ) rings has been investigated. The MTJ rings, with outer diameter of 4, 2 and 1 μm and inner diameter of 1.5, 1 and 0.5 μm were fabricated by a top–down technique. The magnetoresistance curves manifest all of the magnetic domain configurations during magnetization reversal in different sized rings. Various transition processes were observed, such as four transition, three transition and two transition in the largest, middle and smallest MTJ ring, respectively. Furthermore, the biasing fields observed from major loops decrease with decreasing size, which may result from edge roughness produced in the ion-milling process.
Relation: Journal of Magnetism and Magnetic Materials, 310(2) Part3: 1900-1902
Appears in Collections:[Department of Physics] Periodical Articles

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