Results 11 to 20 of about 2,097 (293)
High Entropy Oxide Relaxor Ferroelectrics
ACS 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
core +5 more sources
Materials & Design, 2021 The concept of high entropy ceramics opens up the possibility to optimise the properties of relaxor ferroelectrics with Aurivilius phase structures. In this paper, two new multi-element substituted Aurivillius phase ceramics, (Ca0.25Sr0.25Ba0.25Pb0.25 ...
Man Zhang +5 more
doaj +3 more sources
Random electric field instabilities of relaxor ferroelectrics
npj Quantum Materials, 2017 Complex oxides: A random field state in a relaxor ferroelectric A microscopic model shows how compositional disorder in the form of quenched random electric fields acting in concert with dipolar interactions prohibit long-range ordering in relaxor ...
José R. Arce-Gamboa +1 more
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Topological Point Defects in Relaxor Ferroelectrics
Physical Review Letters, 2016 First-principles-based effective Hamiltonian simulations are used to reveal the hidden connection between topological defects (hedgehogs and antihedgehogs) and relaxor behavior. Such defects are discovered to predominantly lie at the border of polar nanoregions in both Ba(Zr_{0.5}Ti_{0.5})O_{3} (BZT) and Pb(Sc_{0.5}Nb_{0.5})O_{3} (PSN) systems, and the
Nahas, Y. +3 more
openaire +4 more sources
BiFeO3-Based Relaxor Ferroelectrics for Energy Storage: Progress and Prospects. [PDF]
Materials (Basel), 2021 Dielectric capacitors have been widely studied because their electrostatic storage capacity is enormous, and they can deliver the stored energy in a very short time. Relaxor ferroelectrics-based dielectric capacitors have gained tremendous importance for
Deka B, Cho KH.
europepmc +2 more sources
Dielectric and electro-mechanic nonlinearities in perovskite oxide ferroelectrics, relaxors, and relaxor ferroelectrics [PDF]
Journal 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
Piezoelectric response of disordered lead-based relaxor ferroelectrics
Communications Materials, 2023 Lead-based relaxor ferroelectrics are known for their large piezoelectric response, but the relation between the response and the nanoscale structure of these materials is still under debate. In this Perspective, the microscopic implications of the polar
Tadej Rojac
doaj +1 more source
Crystals, 2023 Relaxor ferroelectrics play a vital role as functional components in electromechanical devices. The observation of micro-scale domain structure evolution under electric bias in relaxor ferroelectrics has posed challenges due to their complex domain ...
Kai Li +11 more
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Unfolding kinetic fragility in relaxor ferroelectrics [PDF]
, 2021 The fragility parameter is one of the most important material constants that is extensively used in glass science, playing a central role in the enhancement of the understanding the glass formation process of disordered systems.
José E. García +7 more
core +1 more source
A Bi1/2K1/2TiO3-based ergodic relaxor ceramic for temperature-stable energy storage applications
Materials & Design, 2021 Relaxor ferroelectrics are attractive for the high energy storage density. However, the polarization responses of most relaxor ferroelectrics are sensitive to temperature, thus leading to thermal-dependent energy storage properties.
Yongxing Wei +8 more
doaj +1 more source