Results 21 to 30 of about 292,067 (328)
Barkhausen Noise in a Relaxor Ferroelectric [PDF]
Physical Review Letters, 2001 Barkhausen noise, including both periodic and aperiodic components, is found in and near the relaxor regime of a familiar relaxor ferroelectric, PbMg$_{1/3}$Nb$_{2/3}$O$_3$, driven by a periodic electric field. The temperature dependences of both the amplitude and spectral form show that the size of the coherent dipole moment changes shrink as the ...
Colla, Eugene V. +2 more
openaire +5 more sources
Harnessing local inhomogeneity for enhanced dielectric energy storage [PDF]
Nature CommunicationsInorganic dielectric capacitors are highly demanded in pulsed systems due to their high-power output, but the low energy density limits device miniaturization.
Yiqian Liu +6 more
doaj +2 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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Emergent topological polarization textures in relaxor ferroelectrics [PDF]
Nature CommunicationsRelaxor ferroelectrics underpin high-performance actuators and sensors, yet the nature of polar heterogeneities driving their broadband dielectric response remains debated.
Maksim Eremenko +13 more
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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
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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
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
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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
Ultrafast Neuromorphic Dynamics Using Hidden Phases in the Prototype of Relaxor Ferroelectrics.
Physical Review Letters, 2021 Materials possessing multiple states are promising to emulate synaptic and neuronic behaviors. Their operation frequency, typically in or below the GHz range, however, limits the speed of neuromorphic computing.
S. Prosandeev +4 more
semanticscholar +1 more source
Journal of Advanced Dielectrics, 2022 Relaxor-based ternary Pb([Formula: see text][Formula: see text])O3–Pb([Formula: see text][Formula: see text])O3–PbTiO3 (PIN–PMN–PT) single crystals and ceramics are promising candidates for high-performance electromechanical conversion devices.
Xudong Qi +5 more
doaj +1 more source