Improvement in Giant Magnetoimpedance by High Ion Dose

Author

Song, H. ; Park, D.G. ; Choi, Y. ; Park, J.H.

Author_Institution

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

Volume

48

Issue

11

fYear

2012

Firstpage

3610

Lastpage

3613

Abstract

The effects of annealing and ion-irradiation on the magnetic properties of amorphous Co₆₆Fe₄B₁₅Si₁₅ alloys have been investigated by means of the changes of the giant magnetoimpedance (GMI). In general, there are differences in magnitude and shape of the GMI curves between as-quenched amorphous and ion-irradiated samples. The results indicate that the effects of ion irradiation on the magnetic properties of the as-quenched sample are quite large and show the dependence for ion dose. But a drastic decrease and ion-dose dependence, caused by ion-irradiation, is observed in the magnitude of the GMI of the sample annealed at 380°C, which has a maximum value of the GMI due to the presence of ultra-soft magnetic materials.

Keywords

amorphous magnetic materials; annealing; boron alloys; cobalt alloys; giant magnetoresistance; ion beam effects; iron alloys; silicon alloys; Co₆₆Fe₄B₁₅Si₁₅; GMI curve; amorphous alloy; annealing; giant magnetoimpedance; ion dose dependence; ion irradiation; ultrasoft magnetic materials; Amorphous magnetic materials; Annealing; Frequency measurement; Magnetic domain walls; Magnetic domains; Radiation effects; Amorphous alloys; annealing; giant magneto impedance (GMI); ion irradiation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2202379

Filename

6332940