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Title: Influence of Asymmetry on Vortex Nucleation and Annihilation in Submicroscaled Permalloy Disk Array
Authors: Wu, Kuo-Ming;Horng, Lance;Wang, Jia-Feng;Wu, Jong-Ching;Wu, Yin-Hao;Lee, Ching-Ming
Contributors: 物理學系
Date: 2008-06
Issue Date: 2014-06-06T07:18:57Z
Publisher: American Institute of Physics
Abstract: Magnetic properties of vortex nucleation, annihilation, and switching field distribution (SFD) in NiFe disk arrays, where the elements are with 300 nm diameter and different degrees of asymmetry, were investigated through measurements and simulations of hysteresis loop. The nucleation and annihilation of vortex state show strong dependences on the asymmetry. More interestingly, the width of SFD, the crucial factor for high-density storage application, oscillating with the degree of asymmetry is observed. The simulation results agree well with the experimental data.
Relation: Applied Physics Letters, 92(26): 262507
Appears in Collections:[Department of Physics] Periodical Articles

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