Finite element modelling of giant magnetostriction in thin films

This paper describes a nonlinear model of giant magnetostriction in thin films by a finite element scheme for magnetostatic cases. Given a thin film structure, the magnetic field is first computed. Magnetic induction over elements is then used to compute the magnetoelastic energy. The minimization o...

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Bibliographic Details
Published inIEEE transactions on magnetics Vol. 31; no. 6; pp. 3563 - 3565
Main Authors Benbouzid, M.E.M., Body, C., Reyne, G., Meunier, C.
Format Journal Article
LanguageEnglish
Published IEEE 01.11.1995
Subjects
Couplings
Equations
Finite element methods
Magnetic field induced strain
Magnetic films
Magnetostatics
Magnetostriction
Spline
Stress
Transistors
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Summary:This paper describes a nonlinear model of giant magnetostriction in thin films by a finite element scheme for magnetostatic cases. Given a thin film structure, the magnetic field is first computed. Magnetic induction over elements is then used to compute the magnetoelastic energy. The minimization of the mechanical functional leads to the determination of displacement, strain, etc., due to the magnetostriction process. However, giant magnetostriction is characterized by a strong magneto-mechanical coupling. The model takes it into account by the use of the experimental data through the surface spline method and an iterative process of successive magnetic and mechanical computations.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0018-9464
1941-0069
DOI:10.1109/20.489570