Soft Magnetic Properties of Fe-Ni-Nb Alloy Films

Author

Shimatsu, T. ; Takahashi, Masaharu ; Uwazumi, H. ; Sato, T. ; Takahashi, Masaharu ; Wakiyama, T.

Author_Institution

Tohoku University.

Volume

5

Issue

7

fYear

1990

fDate

7/1/1990 12:00:00 AM

Firstpage

547

Lastpage

553

Abstract

The relation between the soft magnetic properties and local anisotropy fluctuation measured by the dynamic differential susceptibility method in Fe-Ni-Nb alloy films was clarified and discussed in comparison with Fe-Si-Al alloy films. Fe-Ni-Nb alloy films with excellent soft magnetic properties, 5 MHz values of Â¿eff = 6500 for 1000 Ã… thick films were obtained. For Fe-Si-Al alloy films, the magnitude of Â¿eff = 6500 is proportional to 1/S² (where S is a structure constant) and independent of the value of Hk, while for Fe-Ni-Nb alloy films, the value of S is about one-tenth of that in Fe-Si-Al alloy films, and the magnitude of Â¿eff 6500 does not depend on S. Rather, this magnitude is dependent on the value of Hk, and is almost equal to 4Â¿Ms/Hk, obtained from a rotational magnetization model in a uniaxial single-domain particle.

Keywords

Anisotropic magnetoresistance; Fluctuations; Magnetic anisotropy; Magnetic field measurement; Magnetic films; Magnetic properties; Magnetization; Magnetostriction; Perpendicular magnetic anisotropy; Sputtering;

fLanguage

English

Journal_Title

Magnetics in Japan, IEEE Translation Journal on

Publisher

ieee

ISSN

0882-4959

Type

jour

DOI

10.1109/TJMJ.1990.4564141

Filename

4564141