Journal
JOURNAL OF CRYSTAL GROWTH
Volume 318, Issue 1, Pages 890-894Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2010.11.045
Keywords
Segregation; Crystal structure; Piezoelectric materials; Ferroelectric materials
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A ternary relaxor ferroelectric single crystal Pb(In1/2Nb1/2)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 was grown by the modified Bridgman method. The real compositions, phase structures and performances of different regions in the boule were characterized. The real composition deviated from the nominal composition, but the In/Pb ratio in the crystal remained nearly a constant. The piezoelectric coefficient d(33), electromechanical coupling factor k(33) and coercive field E-c after <0 1 1> poling can reach up to 1500 pC/N, 0.90 and 4 kV/cm, respectively. More importantly, the rhombohedral to tetragonal phase transition temperature (T-rt) in PIN-PMN-PT single crystal with rhombohedral composition increased to 114 degrees C, which made the ternary system single crystal fit for the applications in wider temperature range. (C) 2010 Elsevier B.V. All rights reserved.
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