Results 21 to 30 of about 17,703 (286)
Ultrawide-temperature-stable high-entropy relaxor ferroelectrics for energy-efficient capacitors [PDF]
Nature CommunicationsThe development of dielectric ceramics that simultaneously achieve high energy density and ultra-broad temperature stability remains a fundamental challenge for advanced electrostatic capacitors.
Shiyu Zhou +10 more
doaj +2 more sources
Origin of the enhanced flexoelectricity of relaxor ferroelectrics [PDF]
Applied Physics Letters, 2014 We have measured the bending-induced polarization of Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals with compositions at the relaxor-ferroelectric phase boundary. The crystals display flexocoupling coefficients f > 100 V, an order of magnitude bigger than the theoretical upper limit set by the theories of Kogan and Tagantsev.
Gustau Catalan
exaly +4 more sources
Random electric field instabilities of relaxor ferroelectrics [PDF]
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
doaj +2 more sources
Relaxor behavior in rocksalt cation-ordered material induced by (anti)ferroelectric phase competition [PDF]
Nature CommunicationsRelaxor ferroelectrics are characterized by dispersion of the temperature-dependent dielectric constant with frequency and enhanced electromechanical coupling.
Yu Yun +17 more
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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
Theory of relaxor-ferroelectricity [PDF]
Scientific Reports, 2020 AbstractRelaxor-ferroelectrics are fascinating and useful materials, but the mechanism of relaxor-ferroelectricity has been puzzling the scientific community for more than 65 years. Here, a theory of relaxor-ferroelectricity is presented based on 3-dimensional-extended-random-site-Ising-model along with Glauber-dynamics of pseudospins. We propose a new
Zhang, Li-Li, Huang, Yi-Neng
openaire +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
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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
doaj +1 more source
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