Title :
Dynamic hysteresis in Finemet thin films
Author :
Santi, L. ; Sommer, R.L. ; Magni, A. ; Durin, G. ; Colaiori, F. ; Zapperi, S.
Author_Institution :
Dept. de Fisica UFSM, Univ. Fed. de Santa Maria, Brazil
Abstract :
We performed a series of dynamic hysteresis measurements on Finemet films with composition Fe73.5Cu1Nb3Si13.5B9, 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.
Keywords :
Kerr magneto-optical effect; boron alloys; copper alloys; ferromagnetic materials; iron alloys; magnetic domain walls; magnetic hysteresis; magnetic thin films; niobium alloys; silicon alloys; Fe73.5Cu1Nb3Si13.5B9; Finemet thin film; domain wall depinning model; dynamic hysteresis; inductive fluxometric method; magneto-optical Kerr effect; Frequency measurement; Hysteresis; Iron; Kerr effect; Magnetic analysis; Magnetooptic effects; Niobium; Performance evaluation; Semiconductor films; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.815550
