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

被引：29
|
作者：
Wu, Kuo-Ming [1 ,2 ]
Horng, Lance [1 ,2 ]
Wang, Jia-Feng [1 ,2 ]
Wu, Jong-Ching [1 ,2 ]
Wu, Yin-Hao [3 ]
Lee, Ching-Ming [4 ,5 ]
机构：
[1] Natl Changhua Univ Educ, Dept Phys, Changhua 50007, Taiwan
[2] Natl Changhua Univ Educ, Taiwan SPIN Res Ctr, Changhua 50007, Taiwan
[3] Natl Changhua Univ Educ, Grad Inst Photon, Changhua 50007, Taiwan
[4] Natl Yunlin Univ Sci & Technol, Gen Educ Ctr, Yuanlin 64002, Taiwan
[5] Natl Yunlin Univ Sci & Technol, Taiwan SPIN Res Ctr, Yunlin 64002, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 26期
关键词：
D O I：
10.1063/1.2946495
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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. (C) 2008 American Institute of Physics.
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页数：3
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