Computer calculation of the Lorentz microscopy image and magnetic domain structure of weakly ordered FePt : C thin film

A computer calculation technique of Lorentz microscopy image was developed and was applied to the analysis of the Lorentz microscopy image and magnetic domain structure of a weakly ordered FePt:C thin film for recording media. The magnetic domain structure was, at the as-deposited (random) state, a vortex network structure and evolved into the islandlike elongated reverse domain structure at the dc-demagnetization state, via a featherlike ripple structure at the remanent state. The magnetization reversal occurred not by the domain wall motion but by the local magnetization rotation to form a series of local vortices leading to the formation of reverse domains. (c) 2007 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2007-06
Language
ENG
Keywords

MEDIA

Citation

APPLIED PHYSICS LETTERS, v.90, no.23, pp.6883 - 6888

ISSN
0003-6951
DOI
10.1063/1.2746078
URI
http://hdl.handle.net/10203/10767
Appears in Collection
MS-Journal Papers(저널논문)
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