Author:
Wang H. M.,Pan E.,Chen W.Q.
Abstract
AbstractWe investigate magnetoelectric (ME) effects in bilayer multiferroic core-shell composites in this paper. The composites are driven by the radial magnetic field and the induced radial deformation/vibration is studied. Two configurations are considered in a concise and uniform manner mathematically. One is spherical and the other is cylindrical. For bilayer core-shell composites, we show that the geometric configuration has a significant effect on the ME effect in multiferroic core-shell composites for both low-frequency and electromechanical resonance ranges. At the low-frequency range, except for the mechanically clamped case, the ME effects in spherical multiferroic composites are always stronger than that in cylindrical ones. At the electromechanical resonance range, for traction-free case, the fundamental resonance frequency of the spherical multiferroic composite is higher than that of the cylindrical one and thus the corresponding ME effect in spherical composite is stronger than that in cylindrical one.
Reference62 articles.
1. Theoretical modeling of frequency-dependent magenetoelectric effects in laminated multiferroic plates;IEEE Trans Ultrason Ferroelectr Freq Control,2009
2. Magnetoelectric effect in composites of magnetostrictive and piezoelectric materials;J Electroceram,2002
3. Magnetoelectric properties of core-shell particulate nanocomposites;J Appl Phys,2008
4. Theory of low-frequency magnetoelectric coupling in magnetostrictive-piezoelectric bilayers;Phys Rev B,2003
5. Resonant modes and magnetoelectric performance of PZT/Ni cylindrical layered composites;Appl Phys A,2010