Title :
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
fDate :
9/1/1996 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
