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

Kuo Ming Wu, Lance Horng, Jia Feng Wang, Jong Ching Wu, Yin Hao Wu, Ching Ming Lee

Research output: Contribution to journalArticle

24 Citations (Scopus)

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 languageEnglish
Article number262507
JournalApplied Physics Letters
Volume92
Issue number26
DOIs
Publication statusPublished - 2008 Jul 11

Fingerprint

Permalloys (trademark)
asymmetry
nucleation
vortices
simulation
hysteresis
magnetic properties

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

@article{ca90445b0ecf43d8b2cc981289db8034,
title = "Influence of asymmetry on vortex nucleation and annihilation in submicroscaled permalloy disk array",
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.",
author = "Wu, {Kuo Ming} and Lance Horng and Wang, {Jia Feng} and Wu, {Jong Ching} and Wu, {Yin Hao} and Lee, {Ching Ming}",
year = "2008",
month = "7",
day = "11",
doi = "10.1063/1.2946495",
language = "English",
volume = "92",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "26",

}

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 journalArticle

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 -