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Dynamic hysteresis in Finemet thin films

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arxiv cond-mat/0507299 v1 pith:5W6X2DM5 submitted 2005-07-13 cond-mat.mtrl-sci

Dynamic hysteresis in Finemet thin films

classification cond-mat.mtrl-sci
keywords dynamichysteresisfilmsfinemetfrequencyinductivemeasurementsmoke
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We performed a series of dynamic hysteresis measurements on three series of Finemet films with composition Fe$_{73.5}$Cu$_1$Nb$_3$Si$_13.5$B$_9$, using both the longitudinal magneto-optical Kerr effect (MOKE) and the inductive fluxometric method. The MOKE dynamic hysteresis loops show a more marked variability with the frequency than the inductive ones, while both measurements show a similar dependence on the square root of frequency. We analyze these results in the frame of a simple domain wall depinning model, which accounts for the general behavior of the data.

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