Tailoring of unipolar strain in lead-free piezoelectrics using the ceramic/ceramic composite approach

Neamul H. Khansur, Claudia Groh, Wook Jo, Christina Reinhard, Justin A. Kimpton, Kyle G. Webber, John E. Daniels

Research output: Contribution to journalArticlepeer-review

Abstract

The electric-field-induced strain response mechanism in a polycrystalline ceramic/ceramic composite of relaxor and ferroelectric materials has been studied using in situ high-energy x-ray diffraction. The addition of ferroelectric phase material in the relaxor matrix has produced a system where a small volume fraction behaves independently of the bulk under an applied electric field. Inter- and intra-grain models of the strain mechanism in the composite material consistent with the diffraction data have been proposed. The results show that such ceramic/ceramic composite microstructure has the potential for tailoring properties of future piezoelectric materials over a wider range than is possible in uniform compositions.
Original languageEnglish
Article number124108
Pages (from-to)1-6
Number of pages6
JournalJournal of Applied Physics
Volume115
Issue number12
Early online date27 Mar 2014
DOIs
Publication statusPublished - 28 Mar 2014

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