Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 36, Issue 5, Pages 3167-3169Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/20.908724
Keywords
anisotropy variation; domain reversal; micromagnetic simulation; structural irregularity; thin films
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Influence of a nonuniform anisotropy distribution on domain reversal dynamics in ferromagnetic thin films has been investigated. A micromagnetic model has been developed adopting a Monte Carlo algorithm to examine the thermally activated reversal process. In this study, the uniaxial magnetic anisotropy magnitude is spatially nonuniform, Interestingly, the simulation results demonstrate the crucial importance of the nonuniform anisotropy variation on the domain reversal dynamics, The reversal behavior is altered from wall-motion dominant to nucleation dominant with a small change in the spatial anisotropy distribution.
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