Abstract
Electric field-induced phase transition from the tetragonal to rhombohedral phase was investigated for the 〈111〉 direction in tetragonal PZN-PT single crystals, which have spontaneous polarization along the 〈001〉 direction. From the strain and dielectric data, it was confirmed that the samples followed a tetragonal-orthorhombic-rhombohedral phase transition sequence with application of an electric field. This transition is different from the rhombohedral-tetragonal phase transition of 〈001〉 rhombohedral composition single crystals, in which a phase transition occurred without showing the intermediate orthorhombic phase.
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