Magnetoelectric effect in composites of magnet, metal-cap, and piezoceramic

Y. M. Jia, Siu Wing Or, Kwok Ho Lam, H. L.W. Chan, Y. X. Tang, X. Y. Zhao, H. S. Luo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)

Abstract

We report on the magnetoelectric (ME) effect in three-phase magnet-metal-cap-piezoceramic composites of a thickness-polarized Pb(Zr,Ti)O3disk 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 αVof ∼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 αVof 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.
Original languageEnglish
Pages (from-to)525-528
Number of pages4
JournalApplied Physics A: Materials Science and Processing
Volume86
Issue number4
DOIs
Publication statusPublished - 1 Mar 2007

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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