Direct and indirect measurements on electrocaloric effect: Recent developments and perspectives
It has been ten years since the discovery of the giant electrocaloric effect in ferroelectric
materials showed that it is possible to employ this effect for substantial cooling applications …
materials showed that it is possible to employ this effect for substantial cooling applications …
Origins of the inverse electrocaloric effect
The occurrence of the inverse (or negative) electrocaloric effect, where the isothermal
application of an electric field leads to an increase in entropy and the removal of the field …
application of an electric field leads to an increase in entropy and the removal of the field …
Electrocaloric materials
T Correia, Q Zhang - New Generation of Coolers, 2014 - Springer
The electrocaloric effect was discovered in 1930 by Kobeko and Kurchatov. This was not an
accidental discovery; the magnetocaloric effect was already well known, and those scientists …
accidental discovery; the magnetocaloric effect was already well known, and those scientists …
Giant Negative Electrocaloric Effects of Hf0.5 Zr0.5 O2 Thin Films.
Hafnia (HfO 2)-zirconia (ZrO 2) solid solution films show giant positive (ΔT= 13.4 K) and
negative (ΔT=-10.8 K) electrocaloric effects that can be simply controlled by tuning the Hf/Zr …
negative (ΔT=-10.8 K) electrocaloric effects that can be simply controlled by tuning the Hf/Zr …
Electrocaloric enhancement near the morphotropic phase boundary in lead-free NBT-KBT ceramics
The electrocaloric effects (ECEs) of the morphotropic phase boundary (MPB) composition
0.82 (Na 0.5 Bi 0.5) TiO 3-0.18 (K 0.5 Bi 0.5) TiO 3 (NBT-18KBT) are studied by direct …
0.82 (Na 0.5 Bi 0.5) TiO 3-0.18 (K 0.5 Bi 0.5) TiO 3 (NBT-18KBT) are studied by direct …
Pseudo-first-order phase transition for ultrahigh positive/negative electrocaloric effects in perovskite ferroelectrics
HH Wu, J Zhu, TY Zhang - Nano Energy, 2015 - Elsevier
The electrocaloric effect of ferroelectric materials, which occurs significantly near the first-
order paraelectric/ferroelectric transition (FOPFT) Curie temperature, has tremendous …
order paraelectric/ferroelectric transition (FOPFT) Curie temperature, has tremendous …
Electrocaloric effect based on the depolarization transition in (1− x) Bi0. 5Na0. 5TiO3–xKNbO3 lead-free ceramics
X Jiang, L Luo, B Wang, W Li, H Chen - Ceramics international, 2014 - Elsevier
Abstract Lead-free ferroelectric ceramics (1− x) Bi 0.5 Na 0.5 TiO 3− xKNbO 3 (BNT–xKN)
with x= 0.00, 0.04, 0.06 and 0.08 were synthesized by the conventional solid state reaction …
with x= 0.00, 0.04, 0.06 and 0.08 were synthesized by the conventional solid state reaction …
[PDF][PDF] Anisotropy of the Electrocaloric Effect in Lead-Free Relaxor Ferroelectrics.
DOI: 10.1002/aenm. 201301688 ranges where enhanced ECE are observed in classical
ferroelectric materials. Although high ECE values are obtained in these non-relaxor systems …
ferroelectric materials. Although high ECE values are obtained in these non-relaxor systems …
Unification of the negative electrocaloric effect in Bi1/2Na1/2TiO3-BaTiO3 solid solutions by Ba1/2Sr1/2TiO3 doping
The microscopic mechanisms of the negative electrocaloric effect (ECE) of the single-phase
(1− x)(0.94 Bi 1/2 Na 1/2 TiO 3-0.06 BaTiO 3)-xBa 1/2 Sr 1/2 TiO 3 (BNT-BT-BST) perovskite …
(1− x)(0.94 Bi 1/2 Na 1/2 TiO 3-0.06 BaTiO 3)-xBa 1/2 Sr 1/2 TiO 3 (BNT-BT-BST) perovskite …
The structural, dielectric, electrocaloric, and energy storage properties of lead-free Ba0· 90Ca0· 10Zr0· 15Ti0· 85O3
Lead-free ferroelectric materials with Electrocaloric Effect (ECE) and recoverable energy (W
rec) represent a major breakthrough in the technological race for manufacturing low-cost …
rec) represent a major breakthrough in the technological race for manufacturing low-cost …