Pinning field distribution and relaxation time of domain wall in 2605CO Metglas

Author

Kim, D.Y. ; Kim, C.G. ; Ahn, S.J. ; Kim, H.C.

Author_Institution

Hyundai Electron. Ind. Co. Ltd., Kyoungki, South Korea

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3880

Lastpage

3882

Abstract

The pinning field H_p is obtained from the discontinuous variation of permeability according to ac magnetic field amplitude. The probability distribution of pinning field P(H_p) in 2605CO Metglas ribbon of as-quenched state shows a Gaussian distribution, indicating that the pinning sites with different pinning field are randomly distributed. The permeability spectra for pinned state of domain wall are caused by the pure rotational magnetization with 1 MHz relaxation frequency. For the magnetization overcoming the pinning field, the permeability spectra are superposition of rotational magnetization and wall displacement. The average pinning field and relaxation time of wall displacement decrease with the magnetizing angle from ribbon axis, and the relaxation times are found to be exponentionally proportional to the average pinning field

Keywords

amorphous magnetic materials; magnetic domains; magnetic permeability; metallic glasses; spin glasses; 1 MHz relaxation frequency; 2605CO Metglas; Gaussian distribution; ac magnetic field amplitude; average pinning field; domain wall; permeability; pinning field distribution; pinning sites; probability distribution; pure rotational magnetization; relaxation time; relaxation times; rotational magnetization; wall displacement; Amorphous magnetic materials; Amorphous materials; Frequency; Magnetic domain walls; Magnetic field measurement; Magnetic fields; Magnetization; Permeability measurement; Probability distribution; Residual stresses;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800695

Filename

800695