Defects and aliovalent doping engineering in electroceramics

Y Feng, J Wu, Q Chi, W Li, Y Yu, W Fei - Chemical reviews, 2020 - ACS Publications
Since the positive influences of defects on the performance of electroceramics were
discovered, investigations concerning on defects and aliovalent doping routes have grown …

Origins of the inverse electrocaloric effect

A Grünebohm, YB Ma, M Marathe, BX Xu… - Energy …, 2018 - Wiley Online Library
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 …

Phase-transition induced giant negative electrocaloric effect in a lead-free relaxor ferroelectric thin film

B Peng, QI Zhang, B Gang, GJT Leighton… - Energy & …, 2019 - pubs.rsc.org
Ferroelectric/antiferroelectric thin/thick films with large positive or negative electrocaloric
(EC) effects could be very useful in designing commercial refrigeration devices. Here, a …

Giant Negative Electrocaloric Effect in (Pb,La)(Zr,Sn,Ti)O3 Antiferroelectrics Near Room Temperature

F Zhuo, Q Li, J Gao, Y Ji, Q Yan, Y Zhang… - … applied materials & …, 2018 - ACS Publications
(Pb0. 97La0. 02)(Zr x Sn0. 94–x Ti0. 06) O3 (PLZST) antiferroelectric ceramics with x= 0.75–
0.90 have been fabricated and found to be a novel electrocaloric material system with a …

Tunable electrocaloric and energy storage behavior in the Ce, Mn hybrid doped BaTiO3 ceramics

S Liu, Q Xie, L Zhang, Y Zhao, X Wang, P Mao… - Journal of the European …, 2018 - Elsevier
The electrocaloric effect and energy storage property are tuned in the Ba 1-x Ce x Ti 0.99 Mn
0.01 O 3 ceramics prepared by the solid state reaction method. The ceramics with lower Ce …

Electric-field-induced phase transition and electrocaloric effect in PMN-PT

HH Wu, RE Cohen - Physical Review B, 2017 - APS
Ferroelectric perovskite oxides possess a large electrocaloric (EC) effect, but usually at high
temperatures near the ferroelectric/paraelectric phase transition temperature, which limits …

Electrocaloric effect in at all three ferroelectric transitions: Anisotropy and inverse caloric effects

M Marathe, D Renggli, M Sanlialp, MO Karabasov… - Physical Review B, 2017 - APS
We study the electrocaloric (EC) effect in bulk BaTiO 3 (BTO) using molecular dynamics
simulations of a first principles-based effective Hamiltonian, combined with direct …

Polarizing oxygen vacancies in insulating metal oxides under a high electric field

M Youssef, KJ Van Vliet, B Yildiz - Physical review letters, 2017 - APS
We demonstrate a thermodynamic formulation to quantify defect formation energetics in an
insulator under a high electric field. As a model system, we analyzed neutral oxygen …

Enhanced piezoelectric, electrocaloric and energy storage properties at high temperature in lead-free Bi0. 5 (Na1-xKx) 0.5 TiO3 ceramics

X Wang, H Gao, X Hao, X Lou - Ceramics International, 2019 - Elsevier
The piezoelectric, electrocaloric and energy storage properties were systemically
investigated in lead-free Bi 0.5 (Na 1-x K x) 0.5 TiO 3 ceramics from room temperature to …

Giant electrocaloric effect in BaTiO3–Bi (Mg1/2Ti1/2) O3 lead-free ferroelectric ceramics

MD Li, XG Tang, SM Zeng, QX Liu, YP Jiang… - Journal of Alloys and …, 2018 - Elsevier
The microstructure, dielectric property and electrocaloric effect were investigated in the lead-
free (1-x) BaTiO 3–x (BiMg 1/2 Ti 1/2) O 3 ((1-x) BT–x BMT, x= 0.0–0.05) ferroelectric …