Electromechanical properties and anisotropy of single- and multi-domain 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 single crystals

Gang Liu, Wenhua Jiang, Jiaqi Zhu, Wenwu Cao

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Complete sets of elastic, piezoelectric, and dielectric constants of 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 single crystal poled along [111]c (single domain) as well as non-polar axes [001]c and [011]c (multidomain) have been measured under natural conditions. These data allowed us to evaluate accurately the extrinsic contributions to the superior piezoelectric properties. Very large extrinsic contributions to the unusual anisotropies in multidomain crystals are confirmed. We found that the instability of domain structures is the origin of the low mechanical quality factor Q for the multidomain relaxor-based ferroelectric single crystals. Our results can provide useful guidance in future design of domain engineered materials.

Original languageEnglish (US)
Article number162901
JournalApplied Physics Letters
Issue number16
StatePublished - Oct 17 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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