Virginia Tech. Department of Materials Science and EngineeringUnited States. Naval Sea Systems CommandAmin, AhmedViehland, Dwight D.2015-05-212015-05-212004-11-01Amin, A., Viehland, D. (2004). Temperature stability of the piezoelectric and elastic response of dc biased 001 and 110 oriented Pb(Zn1/3Nb2/3)O-3-PbTiO3 single crystals. Journal of Applied Physics, 96(9), 5140-5143. doi: 10.1063/1.17892710021-8979http://hdl.handle.net/10919/52498Temperature and field dependent investigations of the longitudinal electromechanical properties of [001]- and [110]-oriented 0.955Pb(Zn1/3Nb2/3)O-3-0.045PbTiO(3) single crystals have been performed. Electromechanical equivalence was found between [001] and [110] orientations in the ferroelectric rhombohedral FEr phase region, but not in the ferroelectric tetragonal FEt one. A dc bias of 0.4 MV/m did not affect this equivalence. Softening of the dielectric constant (K), piezoelectric coefficient (d(33)), and Young's modulus (Y) were observed along both the [001] and [110] orientations in the FEr phase region on heating towards the FEt one. Above the FEr-FEt phase transition, a significant anisotropy was observed in the electromechanical and elastic coefficients. These results demonstrate that the enhanced length extensional (33-mode) electromechanical coupling k(33) of rhombohedral crystals far from the morphotropic phase boundary is not constrained to the <001> orientation, but rather to the (110) plane. (C) 2004 American Institute of Physics.5 pagesapplication/pdfen-USIn CopyrightFerroelectricityElasticityPiezoelectricityDielectric constantSingle crystalsArticle - Refereedhttp://scitation.aip.org/content/aip/journal/jap/96/9/10.1063/1.1789271https://doi.org/10.1063/1.1789271