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Ferroelectrics Volume 401, 2010 - Issue 1
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SECTION A: THEORIES, MODELING, DOMAINS, PHASE TRANSITIONS AND CRITICAL PHENOMENA

Polarizability Across Morphotropic Phase Boundary in Ferroelectric Ceramics

W. Tang Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China
,
D. N. Fang Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China
&
J. Y. Li Department of Mechanical Engineering, University of Washington, Seattle, WA, 98195-2600, USA
Pages 196-199 | Received 23 Aug 2009, Accepted 23 Sep 2009, Published online: 01 Dec 2010
 
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Abstract

A two-scale micromechanics scheme is used to analyze domain switching in ferroelectric ceramics during poling. The drastically different polarizability characteristics of Pb(ZrxTi1-x)O3 ceramics across morphotropic phase boundary has been captured, it is demonstrated that a complete poling that exhausts 180° and non-180° domain switching is realistic at MPB but highly unlikely in both tetragonal phase and rhombohedra phase, the effects of the transformation strains are also highlighted.

Acknowledgment

We acknowledge partial support from Tsinghua University, NSFC (10572069, 10820101048, and 10572124), and U.S. ARO (W911NF-07-1-0410) and NSF (OISE-0820583).

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