Evolution of magnetization reversal on patterned magnetic elements

Author

Wu, Te-Ho ; Huang, H.W. ; Te-Ho Wu

Author_Institution

Dept. of Phys., Nat. Changhua Univ. of Educ., Taiwan

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2978

Lastpage

2980

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 hut a much higher field was required for magnetization saturation due to their high coercive and saturation fields

Keywords

Permalloy; coercive force; magnetic domains; magnetic force microscopy; magnetic thin films; magnetisation reversal; MFM; NiFe; coercive fields; electrostatic force; live current strip; magnetic domain structure; magnetic force microscopy; magnetization reversal evolution; magnetization saturation; patterned magnetic elements; permalloy thin films; rectangle permalloy elements; saturation fields; Aluminum; Electrostatics; Magnetic domains; Magnetic fields; Magnetic films; Magnetic force microscopy; Magnetic forces; Magnetization reversal; Saturation magnetization; Strips;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908646

Filename

908646