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Growth and electrical properties of large size Pb(In1/2Nb1/2)O3Pb(Mg1/3Nb2/3)O3PbTiO3 crystals prepared by the vertical Bridgman technique

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4 Author(s)
Xu, Guisheng ; R&D Center of Synthetic Crystals, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China ; Chen, Kai ; Yang, Danfeng ; Li, Junbao

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Relaxor-based ferroelectric single crystals Pb(In1/2Nb1/2)O3Pb(Mg1/3Nb2/3)O3PbTiO3 (PIMNT) have been grown directly from their melt using the vertical Bridgman method, and their boules have reached the size of Φ45×80 mm. The as-grown PIMNT28/40/32 crystals on the (001) cuts exhibit a dielectric constant ε∼5200, dielectric loss tan δ∼0.50%, piezoelectric strain constant d33∼1700–2200 pC/N, electromechanical coupling factors kt∼0.61 and k33∼0.92, coercive field Ec∼10.88 kV/cm, remanent polarization Pr∼46 μC/cm2, Curie temperature TC∼192 °C, and rhombohedral to tetragonal phase transition temperature Trt∼119 °C. Moreover, their piezoelectric properties show good thermal stability under the heat treatment at 105 °C.

Published in:

Applied Physics Letters  (Volume:90 ,  Issue: 3 )

Date of Publication:

Jan 2007

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