Theoretical investigation of magnetostrictive bilayers sensitive to bending or temperature changes

J. Kosel*, L. Mehnen, E. Kaniusas, H. Pfützner, T. Meydan, M. Vázquez, M. Rohn, A. M. Merlo, B. Marquardt

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

7 Scopus citations


This paper concerns theoretical investigations of the bending sensitivity and the temperature sensitivity of magnetostrictive bilayer materials, the basic element of novel multifunctional sensor families. The bilayers consist of a magnetostrictive layer and a non-magnetic counter layer. In the here discussed case, there is an additional agglutination layer as a result from the production procedure. The sensitivity is determined by the stress in the magnetostrictive layer induced due to bending or temperature changes. With approximate analytic models, it is shown that the sensitivity depends on several specific layer parameters, e.g. Youngs modulus, thermal expansion coefficient and size dimensions. The influence of the agglutination layer was studied in more detail by means of two dimensional finite element analysis. The results provide an indication for the optimal bilayer composition for specific sensor applications.

Original languageEnglish (US)
Number of pages4
StatePublished - 2004
Externally publishedYes
EventIEEE Sensors 2004 - Vienna, Austria
Duration: Oct 24 2004Oct 27 2004


OtherIEEE Sensors 2004


  • Agglutination
  • Finite element method
  • Magnetostriction
  • Modelling
  • Sensors

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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