Analysis of the Domain Wall Motion in the Ion Irradiated Amorphous Ribbon

Author

Park, D.G. ; Song, H. ; Park, C.Y. ; Angani, C.S. ; Kim, C.G. ; Cheong, Y.M.

Author_Institution

Korea Atomic Energy Res. Inst., Daejeon, South Korea

Volume

45

Issue

10

fYear

2009

Firstpage

4475

Lastpage

4477

Abstract

The mechanism of abrupt increase of the giant magneto impedance (GMI) ratio in the ion irradiated Co-based amorphous ribbon has been investigated. The GMI-ratio considerably increased in the ion irradiated samples and the GMI response showed strong dependence on the driving frequencies. The Barkhausen noise (BN) signals are decreased up to 46% for the Ar ion irradiated sample with energy of 100 keV. The power spectrum density of BN was decreased with increasing ion bombardment energy. The results are interpreted in terms of permeability variation associated with domain wall dynamics.

Keywords

Barkhausen effect; amorphous magnetic materials; boron alloys; cobalt alloys; giant magnetoresistance; ion beam effects; iron alloys; magnetic domain walls; silicon alloys; Barkhausen noise signals; Co₆₆Fe₄B₁₅Si₁₅; domain wall motion; ion irradiated amorphous ribbon; permeability variation; power spectrum density; Barkhausen noise; domain wall pinning; giant magneto impedance (GMI); ion irradiation; permeability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2024878

Filename

5257280