Abstract
A theoretical model is proposed for the frequency response of the magnetic force driven (MFD) magnetoelectric (ME) effect in a piezo-bimorph/ferrite cantilever based on the elastodynamics method, which agrees well with the experimental results for Pb(Zr, Ti)O3-bimorph/Mn–Zn-ferrite cantilever composites. Based on the theoretical model, the dependences of the resonant ME voltage coefficient on geometrical and material parameters of the piezo-bimorph/ferrite cantilever composite are numerically calculated. The results show that an optimum resonant ME effect can be achieved by adjusting the structural and material parameters in the piezo-bimorph/ferrite cantilever composite. This research lays a theoretical basis for understanding the resonant ME effect in the piezo-bimorph/ferrite composite and optimal design of the MFD-ME device based on this configuration.
Highlights
The magnetoelectric (ME) effect is defined as electric polarization to an applied magnetic field or, magnetization to an applied electric field
We proposed a distinctive type of ME composite consisting of a piezoelectric bimorph cantilever and a tip Mn–Zn ferrite with high permeability, in which the piezoelectric cantilever was driven by the magnetic force induced between the Mn–Zn ferrite cores at the free end and a giant ME effect was observed
As no theoretical model has ever been reported on this kind of piezoelectric/high permeability ferrite composite, here we present a theoretical model describing the frequency response of the magnetic force driven (MFD) ME effect in this structure and focus on the dependences of resonant ME coupling on geometrical parameters and material constants
Summary
The magnetoelectric (ME) effect is defined as electric polarization to an applied magnetic field or, magnetization to an applied electric field. As no theoretical model has ever been reported on this kind of piezoelectric/high permeability ferrite composite, here we present a theoretical model describing the frequency response of the magnetic force driven (MFD) ME effect in this structure and focus on the dependences of resonant ME coupling on geometrical parameters and material constants. We believe that this theory could provide theoretical guidance for the design of MFD-ME devices
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