Fractal analysis of time-resolved magnetic domain patterns in Co/Pd multilayer with varying number of repeats

We investigate the fractal behavior of magnetic domain together with analysis of dynamic reversal behavior in Co/Pd multilayer films prepared with different number of repeats n. We utilize a novel magneto-optical microscope magnetometer technique to visualize the time-resolved domain evolution patterns in these films. Quantitative analysis of the time-resolved domain evolution patterns allows us to determine the fractal dimension D-f and the reversal ratio V/R depending on n, where V/R represents the counterbalance between the wall-motion speed V and the nucleation rate R. As n increases, domain shape becomes more ragged and complex and thus, D-f increases. Interestingly enough, the change in D-f clearly seems to be coupled to the change in V/R with varying n, which implies that the correlation between Df and V/R is mediated via the distributed defects. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2004-06
Language
ENG
Keywords

ACTIVATION VOLUMES; REVERSAL BEHAVIOR; FILMS; NANOMULTILAYERS; DEPENDENCE

Citation

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, v.241, pp.1669 - 1672

ISSN
0370-1972
URI
http://hdl.handle.net/10203/14113
Appears in Collection
PH-Journal Papers(저널논문)
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