Evolution of magnetization reversal on patterned magnetic elements

J. C. Wu; H. W. Huang; Te Ho Wu

doi:10.1109/20.908646

Evolution of magnetization reversal on patterned magnetic elements

J. C. Wu, H. W. Huang, Te Ho Wu

Department of Physics

Research output: Contribution to journal › Conference article

8 Citations (Scopus)

Abstract

An in situ observation of magnetic domain structure evolution in the presence of an external magnetic field induced from a live current strip produced underneath patterned permalloy thin films is presented. The signal due to the electrostatic force was avoided during the magnetic force microscope imaging by adding an electrically grounded metal film in-between the patterned films and the current strip. Magnetization reversal on a 6 μm permalloy disk was imaged, whereas magnetic domain structure on higher aspect ratios of ellipse and rectangle permalloy elements showed great changes but a much higher field was required for magnetization saturation due to their high coercive and saturation fields.

Original language	English
Pages (from-to)	2978-2980
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	36
Issue number	5 I
DOIs	https://doi.org/10.1109/20.908646
Publication status	Published - 2000 Sep 1
Event	2000 International Magnetics Conference (INTERMAG 2000) - Toronto, Ont, Canada Duration: 2000 Apr 9 → 2000 Apr 12

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All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Cite this

Wu, J. C., Huang, H. W., & Wu, T. H. (2000). Evolution of magnetization reversal on patterned magnetic elements. IEEE Transactions on Magnetics, 36(5 I), 2978-2980. https://doi.org/10.1109/20.908646

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N2 - An in situ observation of magnetic domain structure evolution in the presence of an external magnetic field induced from a live current strip produced underneath patterned permalloy thin films is presented. The signal due to the electrostatic force was avoided during the magnetic force microscope imaging by adding an electrically grounded metal film in-between the patterned films and the current strip. Magnetization reversal on a 6 μm permalloy disk was imaged, whereas magnetic domain structure on higher aspect ratios of ellipse and rectangle permalloy elements showed great changes but a much higher field was required for magnetization saturation due to their high coercive and saturation fields.

AB - An in situ observation of magnetic domain structure evolution in the presence of an external magnetic field induced from a live current strip produced underneath patterned permalloy thin films is presented. The signal due to the electrostatic force was avoided during the magnetic force microscope imaging by adding an electrically grounded metal film in-between the patterned films and the current strip. Magnetization reversal on a 6 μm permalloy disk was imaged, whereas magnetic domain structure on higher aspect ratios of ellipse and rectangle permalloy elements showed great changes but a much higher field was required for magnetization saturation due to their high coercive and saturation fields.

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10.1109/20.908646