Journal ArticleDOI
The electrocaloric effect and thermal stability of 0.94(Bi 0.5 Na 0.5 )TiO 3 –0.06BaTiO 3 modified by WO 3
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TLDR
The solid-state reaction method is used to prepare the 0.94(Bi0.5Na0.94Ba0.6BaTiO3 modified by WO3 lead-free ceramic.Abstract:
The solid-state reaction method is used to prepare the 0.94(Bi0.5Na0.5)TiO3–0.06BaTiO3 modified by WO3 lead-free ceramic. The unpoled (Bi0.5Na0.5)0.94Ba0.06Ti1−(3/2)x
W
x
O3 with pseudo-cubic structure undergoes transition from ferroelectric to relaxor ferroelectric that happens in the T
d. The maximum reversible temperature change |ΔT| = 0.8 K occurs at the room temperature due to the decline of temperature. In addition, |ΔT| = 0.15 K at the (Bi0.5Na0.5)0.94Ba0.06Ti1−(3/2)x
W
x
O3 with x = 0.75 mol% exhibits good thermal stability at the temperature range of 303–413 K.read more
Citations
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Journal ArticleDOI
Tuning the electrocaloric effect in 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 ceramics by relaxor phase blending
TL;DR: In this paper, the authors show that the addition of the relaxor phase plays a vital role in phase and local structure evolution in 0.94Bi0.5Na0.3 and 0.06BaTiO3 ceramics.
Journal ArticleDOI
Dielectric and energy-storage properties in Bi 0.5 Na 0.5 TiO 3 -BaTiO 3 -AgNbO 3 ternary perovskite compounds
Qi Xu,Xuechen Huang,Hanxing Liu +2 more
TL;DR: A ternary perovskite dielectric (1 − x) ( 0.92Bi0.5Na0.08BaTiO3)-x AgNbO3 has been developed for application as high-temperature energy-storage capacitors as mentioned in this paper.
Journal ArticleDOI
The electrocaloric effect of PBZ/PVDF flexible composite film near room temperature
TL;DR: In this article, a volume composite ratio of 0.8Ba0.2ZrO3 (PBZ) nanofibers with polyvinylidene fluoride (PVDF) dissolved in an organic solvent was prepared through casting.
References
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Journal ArticleDOI
Giant Electrocaloric Effect in Thin-Film PbZr0.95Ti0.05O3
A. S. Mischenko,A. S. Mischenko,Qiming Zhang,Qiming Zhang,James F. Scott,James F. Scott,Roger W. Whatmore,Roger W. Whatmore,Neil D. Mathur,Neil D. Mathur +9 more
TL;DR: A giant electrocaloric effect is demonstrated in 350-nanometer PbZr0.95Ti0.05O3 films near the ferroelectric Curie temperature of 222°C, which may find application in electrical refrigeration.
Journal ArticleDOI
Large electrocaloric effect in ferroelectric polymers near room temperature.
TL;DR: It was determined that a large ECE can be realized in the ferroelectric poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer at temperatures above the feroelectric-paraelectric transition (above 70°C), where an isothermal entropy change of more than 55 joules per kilogram per kelvin degree and adiabatic temperature change were observed.
Journal ArticleDOI
Transferring lead-free piezoelectric ceramics into application
TL;DR: In this article, a figure of merit analysis for key devices is presented and used to contrast lead-containing and lead-free piezoceramics for demanding applications with high reliability, displacements and frequency as well as a wide temperature range.
Journal ArticleDOI
Relaxor Ferroelectric BaTiO3–Bi(Mg2/3Nb1/3)O3 Ceramics for Energy Storage Application
TL;DR: In this paper, the authors showed that the BMN addition could lower the sintering temperature of BT-based ceramics, and they also revealed a pure perovskite structure for all studied samples.
Journal ArticleDOI
Structure, electrical properties and depolarization temperature of (Bi0.5Na0.5)TiO3–BaTiO3 lead-free piezoelectric ceramics
TL;DR: In this paper, the results of X-ray diffraction reveal that Ba 2+ diffuse into the Bi 0.5 Na 0.0.5 TiO 3 lattices to form a solid solution with a pure perovskite structure, and a morphotropic phase boundary (MPB) exists at 0.06.