Article ID Journal Published Year Pages File Type
1461234 Ceramics International 2014 6 Pages PDF
Abstract

The phase diagram of BaTiO3–CaTiO3–BaZrO3 (BT–BZ–CT) ternary system with compositions near the morphotropic phase boundary (MPB) has been studied. Based on the phase diagram, the relationship between piezoelectric properties and energy barriers of BT–BZ–CT ceramics with compositions near the MPB has been studied. Experimental result indicates that the piezoelectric response is proportional to the energy barrier between tetragonal (T) and cubic (C) phases for the samples with the same phase composition. Furthermore, when the energy barrier is small enough, polarization intensity change of the phase transitions is the decisive factor for the huge piezoelectric response.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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