Journal ArticleDOI
Giant electrocaloric effect in BaTiO3–Bi(Mg1/2Ti1/2)O3 lead-free ferroelectric ceramics
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TLDR
In this article, the microstructure, dielectric property and electrocaloric effect were investigated in the lead-free (1-x)BaTiO3-x (BiMg1/2Ti 1/2)O3 ((1 -x) BT-x BMT, x = 0.98BT-0.05) ferroelectric ceramics.About:
This article is published in Journal of Alloys and Compounds.The article was published on 2018-05-30. It has received 41 citations till now. The article focuses on the topics: Electrocaloric effect & Ferroelectric ceramics.read more
Citations
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Journal ArticleDOI
Phase-transition induced giant negative electrocaloric effect in a lead-free relaxor ferroelectric thin film
Biaolin Peng,Biaolin Peng,Biaolin Peng,Qi Zhang,Bai Gang,Glenn J. T. Leighton,Christopher P. Shaw,Steven J. Milne,Bingsuo Zou,Wenhong Sun,Haitao Huang,Zhong Lin Wang +11 more
TL;DR: In this article, a giant negative electrocaloric effect was demonstrated for 0.5(Ba0.8Ca0.2)TiO3-0.5Bi(Mg0.1)O3 (BCT-BMT) lead-free relaxor ferroelectric thin films prepared on Pt(111)/TiOx/SiO2/Si substrates using a sol-gel method.
Journal ArticleDOI
Study of the effect of La3+ doping on the properties of ceramics based on BaTiOx
TL;DR: In this article, the influence of doping with lanthanum (La3+) on structural, conductive properties and phase composition of ceramics based on barium titanate, obtained by solid phase synthesis, followed by thermal annealing at 800 °C for 5 h.
Journal ArticleDOI
Enhanced energy storage density and efficiency in lead-free Bi(Mg1/2Hf1/2)O3-modified BaTiO3 ceramics
TL;DR: In this paper, the (1−−x)BaTiO3-xBi(Mg1/2Hf1/ 2)O3 (BT-BMH) lead-free ferroelectric ceramics are prepared by traditional solid-state method.
Journal ArticleDOI
Prospects and challenges of the electrocaloric phenomenon in ferroelectric ceramics
TL;DR: In this paper, the authors provide a focused view of the above two aspects, which will assist not only in the selection of materials for future cooling applications, but also in the realization of solid-state EC-based refrigeration.
Journal ArticleDOI
Electrocaloric effect and pyroelectric properties in Ce-doped BaCexTi1−xO3 ceramics
TL;DR: In this article, the microstructural, dielectric, electrocaloric, and pyroelectric performances of BaCexTi1−xO3 (BCT) ceramics were systematically explored.
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
Electrocaloric materials for future solid-state refrigeration technologies
TL;DR: The electrocaloric effect (EC) is an adiabatic and reversible temperature change that occurs in a polar material upon application of an electric field as mentioned in this paper, and the current intensive research in EC materials has been driven by the quest for new energy efficient and environmentally friendly cooling technologies.
Journal ArticleDOI
Space-charge relaxation in perovskites.
TL;DR: This anomaly is shown to arise from a Debye dielectric dispersion that slows down following an Arrhenius law and it is proposed that it can be achieved through a space-charge model that quantitatively agrees with the experimental results in the lower temperature range.
Journal ArticleDOI
Giant Electrocaloric Strength in Single-Crystal BaTiO3
Xavier Moya,Enric Stern-Taulats,S. Crossley,David González-Alonso,Sohini Kar-Narayan,Antoni Planes,Lluís Mañosa,Neil D. Mathur +7 more
TL;DR: Direct measurements of heat Q and temperature change Δ T are presented in single-crystal BaTiO 3 (BTO) near the ferroelectric phase transition at Curie temperature T C to address giant EC effects near nominally second-order transitions that are reversible at any temperature above the hysteretic transition regime.
Journal ArticleDOI
Abnormal electrocaloric effect of Na0.5Bi0.5TiO3–BaTiO3 lead-free ferroelectric ceramics above room temperature
TL;DR: In this paper, the electrocaloric effect (ECE) of lead-free ferroelectric ceramics was characterized via P-T curves under different electric fields, which indicated that the NBT has an abnormal ECE with a negative temperature change (ΔT140 −−0.33 −kV/cm) opposite to that of the normal ferroelectrics.