Abstract
Large-size and high-quality 0.95Pb(Zn 1/3 Nb 2/3 )O 3 –0.05PbTiO 3 (0.95PZN–0.05PT) single crystals were grown by a modified Bridgman method using an allomeric 0.69Pb(Mg 1/3 Nb 2/3 )O 3 –0.31PbTiO 3 single crystal as a seed. The as-grown 0.95PZN–0.05PT single crystals exhibit rhombohedral perovskite structure, which changes wholly into cubic structure at 165 °C confirmed by high-temperature X-ray diffraction measurement. 0.95PZN–0.05PT exhibits broad and diffused dielectric response peaks accompanied by apparent dielectric frequency dispersion. Polarization induces an additional dielectric anomaly around 109 °C accompanied by the increase of the temperature of dielectric maximum ( T m ), decrease of the value of dielectric maximum ( e m ) and the enhancement of frequency dispersion which can be assigned to the orientation of ferroelectric domain or a macro–micro domain transition upon heating. The [001]-oriented 0.95PZN–0.05PT crystals exhibit excellent electrical properties, where remanent polarization P...
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