180° wall movement in a magnetic thin-film closure domain structure in a high-frequency field

The dynamic behavior of a 180° wall was observed in a Co-based amorphous alloy film using a Kerr microscope. As a function of an anisotropy direction the amplitude of the 180° wall movement was measured with the drive field applied transverse to the 180° wall of the closure domain structure. The ani...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 1991-08, Vol.70 (4), p.2259-2263
Main Authors: ISHIKAWA, C, SASAKI, S, MORIWAKI, E, HAMAKAWA, Y, SHIIKI, K, SHINAGAWA, K
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Metals. Metallurgy
Physics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The dynamic behavior of a 180° wall was observed in a Co-based amorphous alloy film using a Kerr microscope. As a function of an anisotropy direction the amplitude of the 180° wall movement was measured with the drive field applied transverse to the 180° wall of the closure domain structure. The anisotropy direction was varied by magnetic heat treatment. It was found that the 180° wall moved independently of the anisotropy direction, that is, the 180° wall movement is related only to the applied high-frequency field. To clarify the cause of the 180° wall movement, the magnetic energy of the domain structure and the eddy current loss caused by the high-frequency field were calculated. However, the movement could not be understood completely in terms of energy balance since the magnetostatic energy increases faster than the decrease of the eddy current loss, when the 180° wall moves.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.349418