Magnetization processes in single domain elliptical permalloy thin films

Zung Hang Wei, Mei Feng Lai, Ching Ray Chang, N. A. Usov, Jong-Ching Wu, Jun Yang Lai

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We use the micromagnetic simulation to investigate the reversible and irreversible magnetization processes of the single-domain elliptical permalloy thin films. The reversible magnetization curve without hysteresis obtained by magnetizing the single-domain elliptical permalloy thin film along the hard axis is almost linear as are single-domain ellipsoidal particles. For irreversible processes with hysteresis, the switching field of the ellliptical thin film is reduced compared with that predicted by the Stoner-Wohlfarth model due to the occurrence of non-uniform reversal.

Original languageEnglish
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2004 May 1

Fingerprint

Permalloys (trademark)
Magnetization
Thin films
magnetization
Hysteresis
thin films
hysteresis
irreversible processes
occurrences
rocks
curves
simulation

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Wei, Zung Hang ; Lai, Mei Feng ; Chang, Ching Ray ; Usov, N. A. ; Wu, Jong-Ching ; Lai, Jun Yang. / Magnetization processes in single domain elliptical permalloy thin films. In: Journal of Magnetism and Magnetic Materials. 2004 ; Vol. 272-276, No. SUPPL. 1.
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Magnetization processes in single domain elliptical permalloy thin films. / Wei, Zung Hang; Lai, Mei Feng; Chang, Ching Ray; Usov, N. A.; Wu, Jong-Ching; Lai, Jun Yang.

In: Journal of Magnetism and Magnetic Materials, Vol. 272-276, No. SUPPL. 1, 01.05.2004.

Research output: Contribution to journalArticle

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T1 - Magnetization processes in single domain elliptical permalloy thin films

AU - Wei, Zung Hang

AU - Lai, Mei Feng

AU - Chang, Ching Ray

AU - Usov, N. A.

AU - Wu, Jong-Ching

AU - Lai, Jun Yang

PY - 2004/5/1

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N2 - We use the micromagnetic simulation to investigate the reversible and irreversible magnetization processes of the single-domain elliptical permalloy thin films. The reversible magnetization curve without hysteresis obtained by magnetizing the single-domain elliptical permalloy thin film along the hard axis is almost linear as are single-domain ellipsoidal particles. For irreversible processes with hysteresis, the switching field of the ellliptical thin film is reduced compared with that predicted by the Stoner-Wohlfarth model due to the occurrence of non-uniform reversal.

AB - We use the micromagnetic simulation to investigate the reversible and irreversible magnetization processes of the single-domain elliptical permalloy thin films. The reversible magnetization curve without hysteresis obtained by magnetizing the single-domain elliptical permalloy thin film along the hard axis is almost linear as are single-domain ellipsoidal particles. For irreversible processes with hysteresis, the switching field of the ellliptical thin film is reduced compared with that predicted by the Stoner-Wohlfarth model due to the occurrence of non-uniform reversal.

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