Journal of Materials Science

, Volume 41, Issue 1, pp 97–106

Magnetoelectric coupling, efficiency, and voltage gain effect in piezoelectric-piezomagnetic laminate composites

Authors

  • Shuxiang Dong
    • Department of Materials Science & EngineeringVirginia Tech
  • Jie-Fang Li
    • Department of Materials Science & EngineeringVirginia Tech
  • D. Viehland
    • Department of Materials Science & EngineeringVirginia Tech
Article

DOI: 10.1007/s10853-005-5930-8

Cite this article as:
Dong, S., Li, J. & Viehland, D. J Mater Sci (2006) 41: 97. doi:10.1007/s10853-005-5930-8

Abstract

The magnetoelectric (ME) effect of piezoelectric-magnetostrictive laminate composites, which is a product tensor, has been studied. Based on piezoelectric and piezomagnetic constituent equations, the longitudinal-mode vibration and equivalent circuits have been derived. The effective magnetoelectric coupling coefficient, voltage-gain, and output efficiency have been determined. Our results show: (i) that there is an extreme high voltage gain effect of >260 under resonance drive: the induced ME voltage is much higher than the input voltage to the coils for magnetic excitation; (ii) that there is an optimum ratio of the piezoelectric to piezomagnetic layer thicknesses, which results in maximum effective magnetoelectric coupling; and (iii) that the maximum output efficiency of magnetoelectric laminate at resonance drive is ∼98%, if eddy currents are neglected. This high ME voltage gain effect offers potential for power transformer applications.

Copyright information

© Springer Science + Business Media, Inc. 2006