Results 11 to 20 of about 33,110 (327)

Relaxor Ferroelectric Polymers: Insight into High Electrical Energy Storage Properties from a Molecular Perspective

open access: yesSmall Science, 2021
Relaxor ferroelectric polymers exhibit both high dielectric constants and low remnant polarization and thus deliver much higher energy densities and greater charge–discharge efficiencies than normal ferroelectrics for capacitive energy storage ...
Yang Liu   +7 more
doaj   +1 more source

NMR and the local structure of relaxors [PDF]

open access: yesScience of Sintering, 2002
The relaxor transition in cubic perovskite relaxors (PMN, PSN and PST) and tungsten bronze relaxor (SBN) has been studied by NMR. The observed spectra are composed of a narrow -1/2 « 1/2 central transition superimposed on a broad background due to ...
Blinc R., Zalar B., Gregorovič Alan
doaj   +1 more source

Semiconductor/relaxor 0–3 type composites: A novel strategy for energy storage capacitors

open access: yesJournal of Science: Advanced Materials and Devices, 2021
We report a novel strategy to enhance the dielectric breakdown strength and the energy storage performance of lead-free relaxor ferroelectric ceramics through the fabrication of semiconductor/relaxor 0–3 type composites based on 0.6Ba(Zr0.2Ti0.8)O3-0.4 ...
A.R. Jayakrishnan   +5 more
doaj   +1 more source

Dielectric and ferroelectric behaviour of Zr-doped BaTiO3 perovskites [PDF]

open access: yesProcessing and Application of Ceramics, 2020
The crystal structure, microstructure, dielectric and ferroelectric behaviour of Ba(ZrxTi1-x)O3 (x = 0.05, 0.10, 0.15, 0.20, 0.25) perovskites fabricated by high-temperature solid state method were investigated.
Qi Xu, Zihan Li
doaj   +1 more source

The permittivity – thickness relationship of a PMN (111) single crystal

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2023
In this work, the permittivity measurements of lead magnoniobate PMN (111) single crystals with thicknesses of 400 µm, 25 µm and 10 µm have been carried out at a frequency of 0.1 Hz.
Vakulenko Aleksandr   +3 more
doaj   +1 more source

Deciphering the atomic-scale structural origin for large dynamic electromechanical response in lead-free Bi0.5Na0.5TiO3-based relaxor ferroelectrics

open access: yesNature Communications, 2022
For relaxor ferroelectrics, correlating their properties and local structures is challenging. Here, the authors correlate the atomic-scale structure and the large dynamic electromechanical property in Bi0.5Na0.5TiO3-based relaxor ferroelectrics.
Jie Yin   +14 more
doaj   +1 more source

Dielectric and electro-mechanic nonlinearities in perovskite oxide ferroelectrics, relaxors, and relaxor ferroelectrics [PDF]

open access: yesJournal of Applied Physics, 2021
The polarization and strain response of ferroelectric materials at electric fields below the macroscopic coercive field is of paramount importance for the operation of many electronic devices. The response of real ferroelectric and related materials is, in general, complex and difficult to interpret.
Lukas M. Riemer   +5 more
openaire   +2 more sources

High-Entropy Lead-Free Perovskite Bi0.2K0.2Ba0.2Sr0.2Ca0.2TiO3 Powders and Related Ceramics: Synthesis, Processing, and Electrical Properties

open access: yesNanomaterials, 2023
A novel high-entropy perovskite powder with the composition Bi0.2K0.2Ba0.2Sr0.2Ca0.2TiO3 was successfully synthesized using a modified Pechini method.
Vasile-Adrian Surdu   +7 more
doaj   +1 more source

Ferroelectric properties of charge-ordered alpha-(BEDT-TTF)2I3 [PDF]

open access: yes, 2015
A detailed investigation of the out-of-plane electrical properties of charge-ordered alpha-(BEDT-TTF)2I3 provides clear evidence for ferroelectricity. Similar to multiferroic alpha-(BEDT-TTF)2Cu[N(CN)2]Cl, the polar order in this material is ascribed to ...
Hartmann, B.   +6 more
core   +2 more sources

High Entropy Oxide Relaxor Ferroelectrics

open access: yesACS Applied Materials & Interfaces, 2022
Relaxor ferrolectrics are important in technological applications due to a strong electromechanical response, energy storage capacity, electrocaloric effect, and pyroelectric energy conversion properties. Current efforts to discover and design new materials in this class generally rely on substitutional doping of known ferroelectrics, as slight changes
Yogesh Sharma   +15 more
openaire   +3 more sources

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