Tunable magnetoelastic phononic crystals

J. F. Robillard, O. Bou Matar, J. O. Vasseur, P. A. Deymier, M. Stippinger, A. C. Hladky-Hennion, Y. Pennec, B. Djafari-Rouhani

Research output: Contribution to journalArticlepeer-review

183 Scopus citations


The feasibility of tuning the band structure of phononic crystals is demonstrated by employing magnetostrictive materials and applying an external magnetic field. Band structures are calculated with a plane wave expansion method that accounts for coupling between the elastic behavior and the magnetic field through the development of elastic, piezomagnetic, and magnetic permeability effective tensors. We show the contactless tunability of the absolute band gaps of a two-dimensional phononic crystal composed of an epoxy matrix and Terfenol-D inclusions. The tunable phononic crystal behaves like a transmission switch for elastic waves when the magnitude of an applied magnetic field crosses a threshold.

Original languageEnglish (US)
Article number124104
JournalApplied Physics Letters
Issue number12
StatePublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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