EDP Sciences Journals List
Home Document
Subscriber Authentication Point
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 $\Delta E$ effect in magnetic materials

L. Daniel1 and O. Hubert2

1  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 $\Delta E$ 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 $\Delta E$ effect. According to this statement, a semi-analytical model for the $\Delta E$ effect is proposed, in which magnetization rotation is not considered. An experimental procedure to measure the $\Delta E$ 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


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.