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Abstract
Temperature dependent dielectric constant measurements have been performed on ⟨001⟩ oriented 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 crystals. These investigations have revealed an irreversible secondary transformation between a normal ferroelectric state and a relaxor ferroelectric state with increasing temperature. The results demonstrate that the anisotropy of the high performance piezocrystal state is only locked in under application of field.
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ACKNOWLEDGEMENTS
This work was supported by the Office of Naval Research under grants N000140210340, N000140210126, and MURI N000140110761.