The metastable states in submicron elliptical thin films

Mei Feng Lai; Zung Hang Wei; Ching Ray Chang; N. A. Usov; J. C. Wu; Jun Yang Lai

doi:10.1016/j.jmmm.2003.12.195

The metastable states in submicron elliptical thin films

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We investigate numerically the magnetization structures of the metastable states including quasiuniform state and various vortex states existing in an elliptical permalloy thin film. The typical energy curves as functions of the particle's size are obtained. It is found that the energy density of the quasiuniform state is smaller than the energy densities of these vortex states for small particles, but after a narrow transition range of size the energy density of the quasiuniform state becomes larger than the energy densities of these vortex states.

Original language	English
Pages (from-to)	e1331-e1332
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.195
Publication status	Published - 2004 May 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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T1 - The metastable states in submicron elliptical thin films

AU - Lai, Mei Feng

AU - Wei, Zung Hang

AU - Chang, Ching Ray

AU - Usov, N. A.

AU - Wu, J. C.

AU - Lai, Jun Yang

PY - 2004/5/1

Y1 - 2004/5/1

N2 - We investigate numerically the magnetization structures of the metastable states including quasiuniform state and various vortex states existing in an elliptical permalloy thin film. The typical energy curves as functions of the particle's size are obtained. It is found that the energy density of the quasiuniform state is smaller than the energy densities of these vortex states for small particles, but after a narrow transition range of size the energy density of the quasiuniform state becomes larger than the energy densities of these vortex states.

AB - We investigate numerically the magnetization structures of the metastable states including quasiuniform state and various vortex states existing in an elliptical permalloy thin film. The typical energy curves as functions of the particle's size are obtained. It is found that the energy density of the quasiuniform state is smaller than the energy densities of these vortex states for small particles, but after a narrow transition range of size the energy density of the quasiuniform state becomes larger than the energy densities of these vortex states.

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JF - Journal of Magnetism and Magnetic Materials

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