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Experimental determination of the magnetoelectric coupling coefficient via piezoelectric measurements

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  • Dr Melvin Vopson
  • M. Stewart
  • T. Hegarty
  • A. Muniz-Piniella
  • N. McCartney
  • M. Cain
  • G. Srinivasan
Multiferroic materials exhibit a coupling between their intrinsic electric and magnetic fields known as magnetoelectric (ME) coupling. The ME coupling can be stress-mediated and is induced either magnetically or electrically. The linear ME coupling coefficient, α, gives a comprehensive description of this effect. However, the experimental determination of α is rather complex. In this paper, we report a simple and convenient experiment for the measurement of the magnetically induced ME coupling coefficient. Our experiment is based on the quasi-static piezoelectric coefficient measurement under applied magnetic field and can provide simultaneously the d33 piezo-coefficient of a multiferroic sample and the magnetically induced α coefficient as a function of both applied ac and dc magnetic fields.
Original languageEnglish
Pages (from-to)045106
Number of pages1
JournalMeasurement Science and Technology
Volume19
Issue number4
DOIs
Publication statusPublished - 2008

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