Effect of Annealing on Magnetic Properties and Giant Magnetoimpedance Effect of Amorphous Microwires

Author

Zhukova, Valentina ; Talaat, Ahmed ; Ipatov, Mihail ; Blanco, Juan M. ; Manh-Huong Phan ; Zhukov, Arcady P.

Author_Institution

Dept. de Fis. de Mater., UPV/EHU, San Sebastian, Spain

Volume

50

Issue

6

fYear

2014

fDate

Jun-14

Firstpage

1

Lastpage

4

Abstract

We report on the magnetic properties and giant magnetoimpedance (GMI) effect of amorphous glass-coated Co-rich microwires in as-prepared and annealed states. The magnetic field and frequency dependences of GMI, magnetic hysteresis loops, and domain wall (DW) dynamics of Co_69.2Fe_4.1B_11.8Si_13.8C_1.1 microwires produced by the Taylor-Ulitovski technique were investigated systematically. We have shown that these properties can be tailored either by controlling magnetoelastic anisotropy of the as-prepared microwires or by controlling their magnetic anisotropy via proper annealing. While the GMI effect has been achieved in an as-prepared microwire, high DW velocity and rectangular hysteresis loops have been observed in its annealed counterpart.

Keywords

amorphous magnetic materials; annealing; boron compounds; cobalt compounds; giant magnetoresistance; iron compounds; magnetic anisotropy; magnetic domain walls; magnetic hysteresis; magnetoelastic effects; Co_69.2Fe_4.1B_11.8Si_13.8C_1.1; DW dynamics; DW velocity; GMI; Taylor-Ulitovski technique; amorphous glass-coated Co-rich microwires; annealing; giant magnetoimpedance effect; magnetic anisotropy; magnetic domain wall dynamics; magnetic field; magnetic hysteresis loops; magnetic properties; magnetoelastic anisotropy; rectangular hysteresis loops; Amorphous magnetic materials; Annealing; Magnetic hysteresis; Magnetostriction; Perpendicular magnetic anisotropy; Domain wall (DW) dynamics; giant magnetoimpedance (GMI) effect; magnetic anisotropy; thin microwires;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2304777

Filename

6832867