Abstract
We report on the magnetoelectric (ME) effect in three-phase magnet-metal-cap-piezoceramic composites of a thickness-polarized Pb(Zr,Ti)O3 disk bonded between two truncated conical brass caps and two thickness-magnetized NdFeB magnets along the thickness direction. The effect originated from the product of the magnetic attractive–repellent effect in the magnets and the amplified piezoelectric effect in the cap-disk assembly. The composites exhibited a ME voltage coefficient αV of ∼2.6 mV/Oe in the non-resonance frequency range of 0.1–10 kHz with good voltage-field linearity in the field range of 10-3–10 Oe, besides an enhanced αV of 167.4 mV/Oe at a resonance frequency of 14.4 kHz. Compared to conventional two-phase and three-phase magnetostrictive material-contained ME composites, these composites possessed two distinct benefits of higher property-tailorable flexibility and requiring no external dc bias magnetic field to enable an obvious αV.
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77.84.-S; 75.80.+q; 77.84.Dy; 77.65.-j; 85.80.Jm
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Jia, Y., Or, S., Lam, K. et al. Magnetoelectric effect in composites of magnet, metal-cap, and piezoceramic. Appl. Phys. A 86, 525–528 (2007). https://doi.org/10.1007/s00339-006-3805-8
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DOI: https://doi.org/10.1007/s00339-006-3805-8