Magnetostriction and magnetic Gruneisen parameters in pseudo-binary rare earth-transition metal alloys

Author

Pulvirenti, P.P. ; Jiles, D.C.

Author_Institution

Ames Lab., Iowa State Univ., Ames, IA, USA

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4785

Lastpage

4787

Abstract

A magnetoelastic Gruneisen parameter has been derived from thermodynamic equations of state. It has been found that the magnetoelastic Gruneisen parameter is proportional to the magnetomechanical coupling coefficient, k. This relates directly the energy conversion efficiency to the anharmonicity in the crystal lattice. It therefore provides a way of predicting the field dependence of the energy conversion efficiency in magnetostrictive materials

Keywords

Gruneisen coefficient; equations of state; ferromagnetic materials; magnetoelastic effects; magnetostriction; rare earth alloys; transition metal alloys; crystal lattice anharmonicity; energy conversion efficiency; field dependence; magnetic Gruneisen parameters; magnetoelastic Gruneisen parameter; magnetomechanical coupling coefficient; magnetostriction; pseudo-binary rare earth-transition metal alloys; thermodynamic equations of state; Couplings; Crystalline materials; Crystallization; Energy conversion; Equations; Frequency; Lattices; Magnetic field induced strain; Magnetic materials; Magnetostriction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539151

Filename

539151