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.
| Original language | English |
|---|---|
| Article number | 262507 |
| Journal | Applied Physics Letters |
| Volume | 92 |
| Issue number | 26 |
| DOIs | |
| Publication status | Published - 2008 Jul 11 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
}
Influence of asymmetry on vortex nucleation and annihilation in submicroscaled permalloy disk array. / Wu, Kuo Ming; Horng, Lance; Wang, Jia Feng; Wu, Jong Ching; Wu, Yin Hao; Lee, Ching Ming.
In: Applied Physics Letters, Vol. 92, No. 26, 262507, 11.07.2008.Research output: Contribution to journal › Article
TY - JOUR
T1 - Influence of asymmetry on vortex nucleation and annihilation in submicroscaled permalloy disk array
AU - Wu, Kuo Ming
AU - Horng, Lance
AU - Wang, Jia Feng
AU - Wu, Jong Ching
AU - Wu, Yin Hao
AU - Lee, Ching Ming
PY - 2008/7/11
Y1 - 2008/7/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=46649088159&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=46649088159&partnerID=8YFLogxK
U2 - 10.1063/1.2946495
DO - 10.1063/1.2946495
M3 - Article
AN - SCOPUS:46649088159
VL - 92
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 26
M1 - 262507
ER -