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

Khansur, Neamul H. and Groh, Claudia and Jo, Wook and Reinhard, Christina and Kimpton, Justin A. and Webber, Kyle G. and Daniels, John E. (2014):
Tailoring of unipolar strain in lead-free piezoelectrics using the ceramic/ceramic composite approach.
In: Journal of Applied Physics, pp. 124108(1--6), 115, (12), ISSN 0021-8979, [Online-Edition: http://dx.doi.org/10.1063/1.4869786],
[Article]

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.

Item Type: Article
Erschienen: 2014
Creators: Khansur, Neamul H. and Groh, Claudia and Jo, Wook and Reinhard, Christina and Kimpton, Justin A. and Webber, Kyle G. and Daniels, John E.
Title: Tailoring of unipolar strain in lead-free piezoelectrics using the ceramic/ceramic composite approach
Language: English
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.

Journal or Publication Title: Journal of Applied Physics
Volume: 115
Number: 12
Uncontrolled Keywords: Ceramic composites; Ceramics; Relaxor ferroelectrics; X-ray diffraction; Ferroelectric materials
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Elektromechanik von Oxiden
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A1: Manufacturing of ceramic, textured actuators with high strain
11 Department of Materials and Earth Sciences > Material Science
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
11 Department of Materials and Earth Sciences
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 07 Apr 2014 10:45
Official URL: http://dx.doi.org/10.1063/1.4869786
Additional Information:

SFB 595 A1

Identification Number: doi:10.1063/1.4869786
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