Hetero-amorphous Fe-Co-B-C soft magnetic thin films with uniaxial magnetic anisotropy and large magnetostriction

Author

Tomita, Hiroshi ; Inoue, Tetsuo ; Mizoguchi, Tetsuhiko

Author_Institution

Mater. & Devices Dev. Center, Toshiba Corp., Kawasaki, Japan

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4529

Lastpage

4531

Abstract

Hetero-amorphous (Fe_0.75Co_0.25)_1-x(B_1-yC _y)_x films have been obtained by RF magnetron sputtering. Magnetic properties strongly depended on the hetero-amorphous substructure of the films. The film with a fine substructure less than 10 nm in mean diameter exhibited low coercive force of 40 A/m along the hard axis, large spontaneous magnetization of 1.6 T, and in-plane anisotropy field of 1.2 kA/m induced by field-annealing although the film had a large magnetostriction constant of 39×10^-6

Keywords

amorphous magnetic materials; boron alloys; cobalt alloys; coercive force; ferromagnetic materials; iron alloys; magnetic anisotropy; magnetic annealing; magnetostriction; soft magnetic materials; spontaneous magnetisation; sputtered coatings; (Fe_0.75Co_0.25)_1-x(B_1-yC_y)_x; 10 nm; Fe_0.75Co_0.25BC; RF magnetron sputtering; coercive force; field-annealing; hetero-amorphous substructure; magnetostriction; soft magnetic thin films; spontaneous magnetization; uniaxial magnetic anisotropy; Coercive force; Iron; Magnetic anisotropy; Magnetic films; Magnetic properties; Magnetostriction; Perpendicular magnetic anisotropy; Radio frequency; Soft magnetic materials; Sputtering;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.538920

Filename

538920