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APPLIED PHYSICS LETTERS
Volume 82, Issue 5, Pages 787-789Publisher
AIP Publishing
DOI: 10.1063/1.1541937
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We report a complete set of material properties of single-domain, relaxor-based 0.67Pb(Mg1/3Nb2/3)O-3-0.33PbTiO(3) [PMN-33%PT] single crystals. Because the single-domain state is unstable in natural conditions, a bias electric field of 0.2 MV/m was applied along the dipole direction of the rhombohedral phase during the measurements. It was found that the electromechanical coupling coefficient k(33) and the piezoelectric constant d(33) for single-domain PMN-33%PT are 69% and 190 pC/N, respectively. Both of them are much smaller than those of multidomain PMN-33%PT poled along [001] direction. However, the shear piezoelectric constant d(15) of single-domain PMN-33%PT reaches 4100 pC/N, which is much higher than that of multidomain PMN-33%PT. (C) 2003 American Institute of Physics.
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