Issue Eur. Phys. J. Appl. Phys. Volume 45, Number 3, March 2009 Article Number 31101 Number of page(s) 11 Section Physics of Energy Generation, Conversion and Storage DOI 10.1051/epjap/2009012 Published online 06 February 2009

Eur. Phys. J. Appl. Phys. 45, 31101 (2009)
DOI: 10.1051/epjap/2009012

An analytical model for the effect in magnetic materials

L. Daniel¹ and O. Hubert<sup>2

1</sup>  LGEP, CNRS-UMR 8507, Supélec, Univ. Paris-Sud, UPMC Paris 6, Plateau de Moulon, 11 rue Joliot-Curie, 91192 Gif-sur-Yvette Cedex, France
²  LMT-Cachan – ENS Cachan, CNRS-UMR 8535, UPMC Paris 6, 61 avenue du Président Wilson, 94235 Cachan Cedex, France

laurent.daniel@lgep.supelec.fr

Received: 23 November 2007 / Received in final form: 16 December 2008 / Accepted: 22 December 2008 / Published online: 6 February 2009

Abstract
The effect is often presented as the dependency of the Young's modulus of a material on its state of magnetization. Nevertheless, the elastic properties of a magnetic material do not depend on the magnetization state. Actually, the sensitivity of the magnetostriction strain to the application of a stress explains the effect. According to this statement, a semi-analytical model for the effect is proposed, in which magnetization rotation is not considered. An experimental procedure to measure the effect in magnetic materials is then built-up. Experimental and modeling results are finally compared, with satisfying agreement.

PACS
75.80.+q - Magnetomechanical and magnetoelectric effects, magnetostriction.
46.25.Hf - Thermoelasticity and electromagnetic elasticity.

© EDP Sciences 2009

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