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Temperature and frequency dependent dielectric behavior of [001]c cut (nonpoled) relaxor-PT single crystals: (a) 0.66PMN-0.34PT; (b) 0.71PMN-0.29PT. ‘Tm shift’ denotes the shift of temperature of the dielectric maximum with frequency from 20 Hz to 1M Hz. Classic and relaxor-like ferroelectric behaviors were observed in 0.66PMN-0.34PT and 0.71PMN-0.29PT single crystals, respectively.
