Magnetostriction measurements for amorphous wires

Author

Konno, Y. ; Mohri, K.

Author_Institution

Fac. of Eng., Nagoya Univ., Japan

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3623

Lastpage

3625

Abstract

Novel accurate and stable measurement methods for the magnetostriction constant λ_s and the induced anisotropy constant K_u are presented for amorphous wires. The two constants are theoretically expressed using a magnetization rotation model with or without tensile and compressive stresses. Values of flux densities B_s, B _r, and B_m are estimated, observing 60 Hz BH characteristics of the amorphous wire to which a compressive stress is applied in order to realize the magnetization rotation behavior. Measured variations of λ_s and K_u of wires of different compositions for heat treatments with or without stresses are given. A figure of merit for stress sensor constitution is proposed as λ_sB _s/K_u, a maximum value of which is obtained due to a compressive stress anneal for Fe-rich wires

Keywords

induced anisotropy (magnetic); magnetic properties of amorphous substances; magnetisation; magnetostriction; 60 Hz; amorphous wires; compressive stress; flux densities; heat treatments; induced anisotropy; magnetization rotation model; magnetostriction constant; stress sensor constitution; Amorphous materials; Anisotropic magnetoresistance; Compressive stress; Constitution; Heat treatment; Magnetic sensors; Magnetization; Magnetostriction; Stress measurement; Wires;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42381

Filename

42381