Results 31 to 40 of about 430,501 (291)

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

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
core   +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

Composition controllable multifunctionality of PVDF/PMMA/BaTiO3/OMMT based ternary and quaternary hybrid polymer nanocomposites

Chemical Physics Impact, 2023
State-of-the-art engineered multifunctional nanocomposites composed of different polymer matrices and functional nanomaterials are in high industrial demand for advances in all-solid-state flexible device technologies.
R.J. Sengwa, Naresh Kumar
doaj   +1 more source

Effect of pre-treatment of nanofillers on the dielectric properties of epoxy nanocomposites [PDF]

, 2014
Early researches show that the nano filler dispersion has a significant effect on the dielectric properties of resulting epoxy nanocomposites. In this paper a comparative study on the dielectric permittivity, AC breakdown behaviours and glass transition ...
Wang, Qi, Chen, George
core   +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

Effect of Temperature on Creeping Flashover Voltage of Nanofilled Oil-Pressboard Insulation

IEEE Access, 2020
Creeping flashover (surface discharge) at oil-pressboard interface is considered a serious failure of the insulation system in power transformers. In this paper, creeping flashover voltage at oil-pressboard interface using the concept of nanofluids is ...
Mohamed E. Ibrahim, Alyaa A. Nassar, Mohamed A. Izzularab, Amr M. Abd-Elhady   +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

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

Sepiolite-Based Nanogenerator Driven by Water Evaporation

Nanomaterials
This work introduces a new type of water evaporation-driven nanogenerator (S-WEG) utilizing the natural mineral sepiolite, which capitalizes on its hierarchical nanoporous architecture and intrinsic hydrophilicity to harvest energy from ambient humidity ...
Liwei Zhao, Guoxing Jiang, Xing Zhang, Chunchang Wang   +3 more
doaj   +1 more source