Elimination of stress effects on remanence ratios of cubic magnetic materials

Author

Dionne, Gerald F.

Author_Institution

M.I.T. Lincoln Laboratory, Lexington, Mass.

Volume

Issue

fYear

1971

fDate

9/1/1971 12:00:00 AM

Firstpage

715

Lastpage

718

Abstract

The independent grain model previously employed in analyzing the effect of stress on remanence ratios with stress parallel to the magnetic field has been extended to include the case of stress perpendicular to the field. In addition, the results have been averaged to obtain more realistic approximations to the stress sensitivities as functions of the magnetic anisotropy constant K1and magnetostriction constant λ100and λ111. From theory, it is concluded that for $K_{1} < 0$ , the parallel stress sensitivity is eliminated when $\\lambda _{100} = -0.41 \\lambda _{111}$ . For the perpendicular case, $\\lambda _{100} = -1.15 \\lambda _{111}$ with $\\lambda _{111}< 0$ and $\\lambda _{100} = -0.38 \\lambda _{111}$ with $\\lambda _{111} > 0$ . For $K_{1} > 0$ , both stress sensitivities may be removed when $\\lambda _{111} = 0$ . The results of experiments with both single crystal and polycrystalline Y3MnxFe5-xO12compositions show qualitative agreement with theory, but also indicate that other mechanisms probably influence changes in remanence ratio.

Keywords

Magnetic anisotropy; Magnetization; Magnetoelastic effects; Magnetostriction; Anisotropic magnetoresistance; Compressive stress; Equations; Magnetic analysis; Magnetic anisotropy; Magnetic fields; Magnetic materials; Magnetostriction; Perpendicular magnetic anisotropy; Remanence;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1971.1067183

Filename

1067183

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1047607