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Browse Journals & Magazines > Applied Physics Letters ...> Volume:92 Issue:26 Help

Influence of asymmetry on vortex nucleation and annihilation in submicroscaled permalloy disk array

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6 Author(s)
Wu, Kuo-Ming ; Department of Physics and Taiwan SPIN Research Center, National Changhua University of Education, Changhua 50007, Taiwan ; Horng, L. ; Wang, Jia-Feng ; Wu, Jong-Ching
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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.

Published in:
Applied Physics Letters  (Volume:92 ,  Issue: 26 )

Date of Publication: Jun 2008

Page(s):
262507 - 262507-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2946495
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Jun 2008

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