Results 11 to 20 of about 139,609 (311)

A novel sol–gel route to synthesize (Sr0.5Ba0.5)Nb2O6 ceramics with enhanced electrocaloric effect [PDF]

Journal of Advanced Dielectrics, 2017
(Sr0.5Ba0.5)Nb2O6 ultra-fine powders were synthesized by a novel sol–gel route, and the mechanism of the reaction was discussed. SrCO3, BaCO3, oxalate niobium and citric acid were used to initiate the sol–gel process, and ethylene glycol (EG) was added ...
Ting Chen, Shu Ya Wu, Xiao Qiang Liu, Xiang Ming Chen   +3 more
doaj   +1 more source

Modification of physical properties of Ba(Ni1/3Nb2/3)O3 ceramics through ordered domain engineering

Journal of Materiomics, 2022
Ordered domain engineering has been further developed for modifying and improving physical properties in complex perovskite ceramics. In the present work, Ba(Ni1/3Nb2/3)O3 ceramic is taken as a typical example for ordered domain engineering, in which the
Rui Da Shi, Mei Ying Liu, Xiao Li Zhu, Xiang Ming Chen   +3 more
doaj   +1 more source

Room-temperature ferroelectricity in A-site ordered Ruddlesden-Popper Li2CaTa2O7 ceramics

Journal of Materiomics, 2020
In the present work, the crystal structure, ferroelectric and dielectric properties of the dense single-phase Li2CaTa2O7 ceramics with A-site ordered double-layer Ruddlesden-Popper structures have been investigated by the experiments and first-principles
B.H. Zhang, Z.Z. Hu, B.H. Chen, X.Q. Liu, X.M. Chen   +4 more
doaj   +1 more source

CaCu3Ti4O12 ceramics from co-precipitation method: Dielectric properties of pellets and thick films [PDF]

, 2009
Dielectric properties of CaCu3Ti4O12 (CCTO)-based ceramics and thick films (e ∼50m) prepared from powders synthesized by a soft chemistry method (co-precipitation) are presented and discussed.
Chartier, Thierry, Dutarde, E., Dutarde, Emmanuel, Rumeau, Axel, Lebey, Thierry, Guillemet-Fritsch, Sophie, Guillemet-Fritsch, S., Combettes, Céline, Rossignol, Fabrice, Barbier, Bertrand, Barbier, B.   +10 more
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Materials Design of Complex Dielectric Crystals [PDF]

, 2022
Dielectric materials are insulators that can screen an external electric field. These materials are used in capacitors, high power applications, computer chips, and sensors, making them an essential part of today's electronic technology. The screening in
Morita, Kazuki
core   +1 more source

High energy storage properties in CaLaTiO3-modified NaNbO3-based lead-free antiferroelectric ceramics

Journal of Advanced Dielectrics, 2023
In this work, (1 [Formula: see text])(0.92NaNbO3–0.08BaTiO3)–[Formula: see text]Ca[Formula: see text]La[Formula: see text]TiO3 (NNBT – [Formula: see text]CLT) ceramics were successfully designed and prepared by the solid-state reaction method ...
Cen Liang, Changyuan Wang, Wenjun Cao, Hanyu Zhao, Feng Li, Chunchang Wang   +5 more
doaj   +1 more source

High dielectric constant and low temperature ferroelectric-phase-transition in Ca, Pb co-doped BiFeO3

Results in Physics, 2021
BiFeO3 was co-doped with (Ca, Pb) to obtain Bi1-x(Ca1/2Pb1/2)xFeO3 (x = 0, 0.1 and 0.3) and their structural, morphological, dielectric and ferroelectric properties were studied.
Rida Ahmed, RenJun Si, Sajid ur Rehman, Yi Yu, QiuJu Li, Chunchang Wang   +5 more
doaj   +1 more source

Dielectric properties of CaCu3Ti4O12 based multiphased ceramics [PDF]

, 2006
A “soft chemistry” method, the coprecipitation, has been used to synthesize the perovskite CaCu3Ti4O12 (CCT). Three main types of materials were obtained for both powders and sintered ceramics: a monophased consisting of the pure CCT phase, a biphased ...
Durand, Bernard, Lebey, Thierry, Boulos, Madona, Guillemet-Fritsch, Sophie, Guillemet, Sophie   +4 more
core   +1 more source

Giant room temperature elastocaloric effect in metal-free thin-film perovskites

npj Computational Materials, 2021
Solid-state refrigeration which is environmentally benign has attracted considerable attention. Mechanocaloric (mC) materials, in which the phase transitions can be induced by mechanical stresses, represent one of the most promising types of solid-state ...
Cheng Li, Yu Hui Huang, Jian-Jun Wang, Bo Wang, Yong Jun Wu, He Tian, Long-Qing Chen, Zijian Hong   +7 more
doaj   +1 more source

The Role of the Accumulated Surface Charge on Nanoparticles in Improving the Breakdown Strength of Liquid and Solid Insulation

Energies, 2022
In this paper, the role of the accumulated surface charge on the surfaces of nanoparticles on breakdown strength for liquid and solid dielectrics is presented. The breakdown strengths of a nanofilled liquid dielectric and a solid dielectric are evaluated.
Mohamed E. Ibrahim, Elsayed Tag Eldin, Safaa F. Elzoghby, Mohamed A. Izzularab, Amr M. Abd-Elhady   +4 more
doaj   +1 more source