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Pb(Er1/2Nb1/2)O3–Pb(Zn1/3Nb2/3)O3–PbTiO3 Single Crystals with High Curie Temperature

Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China
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Crystals 2020, 10(1), 22; https://doi.org/10.3390/cryst10010022
Received: 27 December 2019 / Revised: 2 January 2020 / Accepted: 3 January 2020 / Published: 5 January 2020
In this work, 0.15Pb(Er1/2Nb1/2)O3–0.63Pb(Zn1/3Nb2/3)O3–0.22PbTiO3 (15PEN–63PZN–22PT) single crystals with a pure perovskite structure are obtained through the flux method. The phase structure, dielectric, ferroelectric properties and upconversion photoluminescence of the crystals are studied. The ternary crystals along the [110] orientation have a high Curie temperature (Tc = 250 °C) and large coercive field (Ec = 11.0597 kV/cm) which are higher than those of crystals reported previously. Furthermore, the PEN–PZN–PT crystals are produced with a strong green light excited by a 980 nm laser. Being in the range 298–478 K, the emission intensity of all peaks decreases with increase in temperature. The absolute quantum yield (QY) for the crystals is 0.00059%. These excellent properties provide new possibilities for multifunctional materials of optoelectronic devices. View Full-Text
Keywords: PEN–PZN–PT; perovskite; high Curie temperature; upconversion luminescence PEN–PZN–PT; perovskite; high Curie temperature; upconversion luminescence
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Chen, Y.; Xi, Z.; Guo, F.; Fang, P.; Li, X.; Long, W.; He, A.; Zhu, Q. Pb(Er1/2Nb1/2)O3–Pb(Zn1/3Nb2/3)O3–PbTiO3 Single Crystals with High Curie Temperature. Crystals 2020, 10, 22.

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