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Influence of eddy current on magnetization processes in submicrometer permalloy structures

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7 Author(s)
Hrkac, G. ; Inst. of Solid State Phys., Vienna Univ. of Technol., Austria ; Schrefl, T. ; Ertl, O. ; Suess, D.
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In this paper, we determine the critical particle size and conductivity range that leads to pronounced eddy current effects on magnetization reversal of magnetic nanostructures. An extended finite-element micromagnetic solver which includes eddy currents is used to calculate the magnetization behavior of a permalloy nanocube of 27 nm side under the influence of an applied field. It is shown that for high-conductivity σ>106 (Ω m)-1 in the intermediate state of reversal it takes the magnetization longer to fully align in the direction of the applied field.

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Magnetics, IEEE Transactions on  (Volume:41 ,  Issue: 10 )