Magnetoelectric effect in composites of magnet,metal-cap,and piezoceramic |
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| Authors: | Y.M. Jia S.W. Or K.H. Lam H.L.W. Chan Y.X. Tang X.Y. Zhao H.S. Luo |
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| Affiliation: | (1) State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Chengbei Road 215, Jiading, Shanghai, 201800, P.R. China;(2) Department of Applied Physics, the Hong Kong Polytechnic University, Kowloon, Hong Kong, P.R. China;(3) Graduate School of the Chinese Academy of Sciences, Beijing, 100039, P.R. China |
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| 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. PACS 77.84.-S; 75.80.+q; 77.84.Dy; 77.65.-j; 85.80.Jm |
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