Probing the local magnetization reversal through magnetoresistance measurement

I. C. Lo, Jong-Ching Wu, Lance Horng, Zung Hang Wei, Mei Fang Lai, C. R. Chang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A microstructured permalloy ellipse with six equally spaced nonmagnetic voltage leads has been studied through magnetoresistance measurements and magnetic force microscopy. The aspect ratio and film thickness of the element having three vortices of magnetic configuration were accordingly designed and fabricated using electron-beam lithography through a lift off process. Magnetoresistance curves measured with various pairs of voltage leads have revealed a local magnetic-moment reversal. Two magnetoresistance kinks observed with decreasingincreasing field strength can be attributed to the vortex formationannihilation, which was confirmed by magnetic force microscopy and micromagnetic simulation. The motion of the vortex core driven by the transverse external magnetic field was estimated to be 4.1 nmOe.

Original languageEnglish
Article number10M102
JournalJournal of Applied Physics
Volume97
Issue number10
DOIs
Publication statusPublished - 2005 May 15

Fingerprint

magnetic force microscopy
vortices
magnetization
Permalloys (trademark)
ellipses
electric potential
aspect ratio
field strength
film thickness
lithography
magnetic moments
electron beams
curves
configurations
magnetic fields
simulation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Lo, I. C. ; Wu, Jong-Ching ; Horng, Lance ; Wei, Zung Hang ; Lai, Mei Fang ; Chang, C. R. / Probing the local magnetization reversal through magnetoresistance measurement. In: Journal of Applied Physics. 2005 ; Vol. 97, No. 10.
@article{98896bcf446c4536ad9f1bd875e7bd19,
title = "Probing the local magnetization reversal through magnetoresistance measurement",
abstract = "A microstructured permalloy ellipse with six equally spaced nonmagnetic voltage leads has been studied through magnetoresistance measurements and magnetic force microscopy. The aspect ratio and film thickness of the element having three vortices of magnetic configuration were accordingly designed and fabricated using electron-beam lithography through a lift off process. Magnetoresistance curves measured with various pairs of voltage leads have revealed a local magnetic-moment reversal. Two magnetoresistance kinks observed with decreasingincreasing field strength can be attributed to the vortex formationannihilation, which was confirmed by magnetic force microscopy and micromagnetic simulation. The motion of the vortex core driven by the transverse external magnetic field was estimated to be 4.1 nmOe.",
author = "Lo, {I. C.} and Jong-Ching Wu and Lance Horng and Wei, {Zung Hang} and Lai, {Mei Fang} and Chang, {C. R.}",
year = "2005",
month = "5",
day = "15",
doi = "10.1063/1.1847293",
language = "English",
volume = "97",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "10",

}

Probing the local magnetization reversal through magnetoresistance measurement. / Lo, I. C.; Wu, Jong-Ching; Horng, Lance; Wei, Zung Hang; Lai, Mei Fang; Chang, C. R.

In: Journal of Applied Physics, Vol. 97, No. 10, 10M102, 15.05.2005.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Probing the local magnetization reversal through magnetoresistance measurement

AU - Lo, I. C.

AU - Wu, Jong-Ching

AU - Horng, Lance

AU - Wei, Zung Hang

AU - Lai, Mei Fang

AU - Chang, C. R.

PY - 2005/5/15

Y1 - 2005/5/15

N2 - A microstructured permalloy ellipse with six equally spaced nonmagnetic voltage leads has been studied through magnetoresistance measurements and magnetic force microscopy. The aspect ratio and film thickness of the element having three vortices of magnetic configuration were accordingly designed and fabricated using electron-beam lithography through a lift off process. Magnetoresistance curves measured with various pairs of voltage leads have revealed a local magnetic-moment reversal. Two magnetoresistance kinks observed with decreasingincreasing field strength can be attributed to the vortex formationannihilation, which was confirmed by magnetic force microscopy and micromagnetic simulation. The motion of the vortex core driven by the transverse external magnetic field was estimated to be 4.1 nmOe.

AB - A microstructured permalloy ellipse with six equally spaced nonmagnetic voltage leads has been studied through magnetoresistance measurements and magnetic force microscopy. The aspect ratio and film thickness of the element having three vortices of magnetic configuration were accordingly designed and fabricated using electron-beam lithography through a lift off process. Magnetoresistance curves measured with various pairs of voltage leads have revealed a local magnetic-moment reversal. Two magnetoresistance kinks observed with decreasingincreasing field strength can be attributed to the vortex formationannihilation, which was confirmed by magnetic force microscopy and micromagnetic simulation. The motion of the vortex core driven by the transverse external magnetic field was estimated to be 4.1 nmOe.

UR - http://www.scopus.com/inward/record.url?scp=21044447420&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=21044447420&partnerID=8YFLogxK

U2 - 10.1063/1.1847293

DO - 10.1063/1.1847293

M3 - Article

VL - 97

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 10

M1 - 10M102

ER -