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

Volume

39

Issue

5

fYear

2003

Firstpage

2666

Lastpage

2668

Abstract

We performed a series of dynamic hysteresis measurements on Finemet films with composition Fe_73.5Cu₁Nb₃Si_13.5B₉, 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; Fe_73.5Cu₁Nb₃Si_13.5B₉; 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.815550

Filename

1233178