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

Abstract

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.

Review of Research on the Rare-Earth Doped Piezoelectric Materials

“…Under a 980 nm laser excitation, the modified crystals produce up-conversion with three colors [blue (480 nm), strong near-infrared (804 nm), and weak red (652 nm)]. Chen et al (2020b) and Chen et al (2020c) reported the coercive field E c of Eu doped PZN-9PT crystal significantly increased to 11.0597 kV/cm, and it is triple higher than that of pure PZN-9PT crystal. Besides, under the excitation of 464 nm, four broadband peaks appear at around 593 nm, 613 nm, 657 nm, and 716 nm, respectively.…”