https://doi.org/10.1051/epjap/2016150607
Regular Article
Enhanced converse magnetoelectric effect in cylindrical piezoelectric-magnetostrictive composites
1
Magnetoelectronic Lab, Nanjing Normal University, Nanjing 210097, P.R. China
2
Department of Applied Physics, Nanjing Tech University, Nanjing 210009, P.R. China
a e-mail: zhangning@njnu.edu.cn
Received:
9
December
2015
Revised:
17
March
2016
Accepted:
19
September
2016
Published online: 28 October 2016
Enhanced converse magnetoelectric (ME) effect has been experimentally observed in cylindrical PZT-Terfenol-D piezoelectric-magnetostrictive bilayered composites, where the piezoelectric and magnetostrictive components are coupled through normal stresses instead of shear stresses that act in most of previous multiferroic composites. A theoretical model based on elastodynamics analysis has been proposed to describe the frequency response of converse ME effect for axial and radial modes in the bilayered cylindrical composites. The theory shows good agreement with the experimental results. The different variation tendency of resonant converse ME coefficient, as well as different variation rate of resonance frequency with bias magnetic field for axial and radial modes is interpreted in terms of demagnetizing effect. This work is of theoretical and technological significance for the application of converse ME effect as magnetic sensor, transducers, coil-free flux switch, etc.
© EDP Sciences, 2016
