Influence of asymmetric disks on control over the existence of vortex in submicrometer-scaled Permalloy disks

Chao Hsien Huang, Kuo Ming Wu, Chih Yi Wang, Jong Ching Wu, Lance Horng

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The influence of the degree of asymmetry of a Py disk in a vortex configuration by changing an excised angle is studied in this paper. Samples of 40 nm thick NiFe disk arrays, with excised angles varying from 15° to 90° and diameters of 800, 500, and 300 nm, were investigated to observe the dependence of vortex nucleation and annihilation fields on the asymmetry and dimensions. Linear relations of vortex nucleation and annihilation fields to aspect ratio were found, and are useful mainly for controlling the nucleation and annihilation fields. Relationships between the vortex existence field and the aspect ratio, a thickness and diameter were found, and these should be taken into account when designing single vortex element applications.

Original languageEnglish
Article number07B913
JournalJournal of Applied Physics
Volume109
Issue number7
DOIs
Publication statusPublished - 2011 Apr 1

Fingerprint

Permalloys (trademark)
vortices
nucleation
aspect ratio
asymmetry
configurations

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

@article{f0a2fa92ba814f92ba427ee5aca9f3ba,
title = "Influence of asymmetric disks on control over the existence of vortex in submicrometer-scaled Permalloy disks",
abstract = "The influence of the degree of asymmetry of a Py disk in a vortex configuration by changing an excised angle is studied in this paper. Samples of 40 nm thick NiFe disk arrays, with excised angles varying from 15° to 90° and diameters of 800, 500, and 300 nm, were investigated to observe the dependence of vortex nucleation and annihilation fields on the asymmetry and dimensions. Linear relations of vortex nucleation and annihilation fields to aspect ratio were found, and are useful mainly for controlling the nucleation and annihilation fields. Relationships between the vortex existence field and the aspect ratio, a thickness and diameter were found, and these should be taken into account when designing single vortex element applications.",
author = "Huang, {Chao Hsien} and Wu, {Kuo Ming} and Wang, {Chih Yi} and Wu, {Jong Ching} and Lance Horng",
year = "2011",
month = "4",
day = "1",
doi = "10.1063/1.3566066",
language = "English",
volume = "109",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "7",

}

Influence of asymmetric disks on control over the existence of vortex in submicrometer-scaled Permalloy disks. / Huang, Chao Hsien; Wu, Kuo Ming; Wang, Chih Yi; Wu, Jong Ching; Horng, Lance.

In: Journal of Applied Physics, Vol. 109, No. 7, 07B913, 01.04.2011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influence of asymmetric disks on control over the existence of vortex in submicrometer-scaled Permalloy disks

AU - Huang, Chao Hsien

AU - Wu, Kuo Ming

AU - Wang, Chih Yi

AU - Wu, Jong Ching

AU - Horng, Lance

PY - 2011/4/1

Y1 - 2011/4/1

N2 - The influence of the degree of asymmetry of a Py disk in a vortex configuration by changing an excised angle is studied in this paper. Samples of 40 nm thick NiFe disk arrays, with excised angles varying from 15° to 90° and diameters of 800, 500, and 300 nm, were investigated to observe the dependence of vortex nucleation and annihilation fields on the asymmetry and dimensions. Linear relations of vortex nucleation and annihilation fields to aspect ratio were found, and are useful mainly for controlling the nucleation and annihilation fields. Relationships between the vortex existence field and the aspect ratio, a thickness and diameter were found, and these should be taken into account when designing single vortex element applications.

AB - The influence of the degree of asymmetry of a Py disk in a vortex configuration by changing an excised angle is studied in this paper. Samples of 40 nm thick NiFe disk arrays, with excised angles varying from 15° to 90° and diameters of 800, 500, and 300 nm, were investigated to observe the dependence of vortex nucleation and annihilation fields on the asymmetry and dimensions. Linear relations of vortex nucleation and annihilation fields to aspect ratio were found, and are useful mainly for controlling the nucleation and annihilation fields. Relationships between the vortex existence field and the aspect ratio, a thickness and diameter were found, and these should be taken into account when designing single vortex element applications.

UR - http://www.scopus.com/inward/record.url?scp=79955399963&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955399963&partnerID=8YFLogxK

U2 - 10.1063/1.3566066

DO - 10.1063/1.3566066

M3 - Article

AN - SCOPUS:79955399963

VL - 109

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 7

M1 - 07B913

ER -