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Electromechanical Properties of PMN–PZT Piezoelectric Single Crystals Near Morphotropic Phase Boundary Compositions
Author(s) -
Zhang Shujun,
Lee SungMin,
Kim DongHo,
Lee HoYong,
Shrout Thomas R.
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.02004.x
Subject(s) - phase boundary , materials science , ferroelectricity , piezoelectricity , curie temperature , dielectric , coercivity , atmospheric temperature range , analytical chemistry (journal) , condensed matter physics , phase (matter) , crystal (programming language) , phase transition , mineralogy , composite material , ferromagnetism , thermodynamics , chemistry , optoelectronics , physics , organic chemistry , chromatography , computer science , programming language
Pb(Mg 1/3 Nb 2/3 )O 3 –PbZrO 3 –PbTiO 3 (PMN–PZT) ferroelectric single crystals near morphotropic phase boundary compositions were fabricated by solid‐state crystal growth. The Curie temperatures ( T C ) of the grown PMN–PZT crystals were found to be on the order of 210°C, with ferroelectric phase transition temperatures ( T R – T ) in the range of 96°–165°C. The electromechanical coupling factors k 33 and k 32 were found to be >90% and >−87%, respectively. The coercive field E C for all the compositions was on the order of 5 kV/cm, double the value of pure Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 (PMNT) crystals. The temperature dependence of the piezoelectric and electromechanical properties and dc bias effect on the dielectric behavior were investigated. The temperature usage range under dc bias was found to be improved when compared with pure PMNT crystals with similar piezoelectric properties.