Metastable state before magnetization reversal in single-domain elongated thin films

Jun Yang Lai, Zung Hang Wei, Mei Feng Lai, Ching Ray Chang, Jong-Ching Wu, I. C. Lo

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A metastable state for the elongated Permalloy elements is found to exist within a short field range before magnetization reversal. From the micromagnetic simulation it exhibits a wavelike structure, and the corresponding magnetic pole density distribution shows a pattern with periodic spots along the boundary. We also use magnetic force microscopy imaging and magnetoresistance measurement, which measures the nucleation field and coercive field, to study the noncoherent magnetization reversal properties of Permalloy ellipse with long axis, short axis, and thicknesses of 18 μm, 1 μm, and 45 nm, respectively. The metastable state before switching is found to be repeatable.

Original languageEnglish
Article number08G313
JournalJournal of Applied Physics
Volume99
Issue number8
DOIs
Publication statusPublished - 2006 May 25

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Permalloys (trademark)
metastable state
magnetic poles
magnetization
magnetic force microscopy
ellipses
thin films
density distribution
nucleation
simulation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Lai, Jun Yang ; Wei, Zung Hang ; Lai, Mei Feng ; Chang, Ching Ray ; Wu, Jong-Ching ; Lo, I. C. / Metastable state before magnetization reversal in single-domain elongated thin films. In: Journal of Applied Physics. 2006 ; Vol. 99, No. 8.
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Metastable state before magnetization reversal in single-domain elongated thin films. / Lai, Jun Yang; Wei, Zung Hang; Lai, Mei Feng; Chang, Ching Ray; Wu, Jong-Ching; Lo, I. C.

In: Journal of Applied Physics, Vol. 99, No. 8, 08G313, 25.05.2006.

Research output: Contribution to journalArticle

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AU - Lo, I. C.

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