Virginia Tech. Department of Materials Science and EngineeringUnited States. Naval Sea Systems CommandViehland, Dwight D.Li, JiefangAmin, Ahmed2015-05-212015-05-212002-10-01Viehland, D., Li, J. F., Amin, A. (2002). Electromechanical and elastic isotropy in the (011) plane of 0.7Pb(Mg1/3Nb2/3)O-3-0.3PbTiO(3) crystals: Inhomogeneous shearing of polarization. Journal of Applied Physics, 92(7), 3985-3989. doi: 10.1063/1.14860510021-8979http://hdl.handle.net/10919/52499Temperature dependent electromechanical investigations of <110>, <001>, and <111> oriented morphotropic phase boundary compositions of Pb(Mg1/3Nb2/3)O-3-PbTi0(3) crystals have been performed. Softening of the dielectric constant, piezoelectric constant, and Young's modulus was found for all three orientations, near a ferroelectric rhombohedral to ferroelectric tetragonal transformation. However, the value of Young's modulus was an order of magnitude higher along <111>, than either <001> or <110>. An unusual electromechanical and elastic equivalence was found between the <110> and <001> directions. This result demonstrates that the enhanced electromechanical performance of oriented piezocrystals is not constrained to the <001> orientation, but rather to the (011) plane. (C) 2002 American Institute of Physics.6 pagesapplication/pdfen-USIn CopyrightElastic moduliElasticityFerroelectric phase transitionsDielectric constantNiobiumArticle - Refereedhttp://scitation.aip.org/content/aip/journal/jap/92/7/10.1063/1.1486051https://doi.org/10.1063/1.1486051