Magnetoelastic behaviour of aluminium substituted Terfenol-D at elevated temperatures

Author

Prajapati, K. ; Jenner, A.G. ; Greenough, R.D.

Author_Institution

Dept. of Appl. Math., Hull Univ., UK

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

3976

Lastpage

3978

Abstract

Comparisons of the magnetoelastic responses of the highly magnetostrictive compound Terfenol-D (Tb_0.3Dy_0.7Fe _1.95) with aluminium substituted compounds Tb_0.3Dy(Fe_1-xAl_x)_1.95 where 0.05⩽×⩽0.10 in the temperature range 20-300°C have been made. In particular measurement of magnetostrictive strain (λ), differential strain coefficient (d₃₃), and magnetomechanical coupling coefficient (k₃₃) have been made against applied dc magnetic field (⩽120 kA/m), uniaxial pressure (120 MPa), and temperature. Compared with Terfenol-D, the substituted materials are less anisotropic with larger d-coefficients which require lower bias fields

Keywords

aluminium alloys; dysprosium alloys; ferromagnetic materials; internal stresses; iron alloys; magnetoelastic effects; magnetostriction; terbium alloys; 20 to 300 degC; Al substituted Terfenol-D; Tb_0.3Dy(Fe_1-xAl_x)_1.95; Tb_0.3Dy_0.7(FeAl)_1.95; applied DC magnetic field; bias fields; differential strain coefficient; elevated temperatures; highly magnetostrictive compound; magnetoelastic behaviour; magnetomechanical coupling coefficient; magnetostrictive strain; uniaxial pressure; Aluminum; Iron; Magnetic anisotropy; Magnetic field induced strain; Magnetic field measurement; Magnetostriction; Perpendicular magnetic anisotropy; Strain measurement; Temperature distribution; Uniaxial strain;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489835

Filename

489835