Results 31 to 40 of about 908 (161)
Small 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
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Ferroelectricity and Self-Polarization in Ultrathin Relaxor Ferroelectric Films [PDF]
Scientific Reports, 2016 AbstractWe report ferroelectricity and self-polarization in the (001) oriented ultrathin relaxor ferroelectric PMN-PT films grown on Nb-SrTiO3, SrRuO3 and La0.7Sr0.3MnO3, respectively. Resistance-voltage measurements and AC impedance analysis suggest that at high temperatures Schottky depletion width in a 4 nm thick PMN-PT film deposited on Nb-SrTiO3 ...
Peixian Miao +9 more
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Structure factor of a relaxor ferroelectric
Physical Review B, 2015 We study a minimal model for a relaxor ferroelectric including dipolar interactions, and short-range harmonic and anharmonic forces for the critical modes as in the theory of pure ferroelectrics together with quenched disorder coupled linearly to the critical modes.
Guzmán Verri, Gian Giacomo +1 more
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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.
Jackeline Narvaez, Gustau Catalan
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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
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AIP Advances, 2015 The electrocaloric (EC) effect has been paid great attentions recently for applications on cooling or electricity generation. However, the directly commercial measurement equipment for the effect is still unavailable.
Hongbo Liu, Xue Yang
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NMR and the local structure of relaxors [PDF]
Science 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
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AIP Advances, 2020 The ternary solid solution Bi1/2(Na0.78K0.22)1/2TiO3-BiMg1/2Ti1/2O3 (BNKT-BMT) was investigated for high-strain actuator applications. This study of the BNKT-BMT system looked at the macroscopic properties as a function of BMT doping, temperature, and ...
Nicholas Mostovych +4 more
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Journal of Materiomics, 2022 Bi0.5Na0.5TiO3 (BNT)-based ceramics are one of the most promising lead-free ferroelectrics due to their high strain property. Compared to other chemical modifications, rare earth ions doping provides significant possibility to optimize the strain ...
Anping Deng, Jiagang Wu
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Crystals, 2021 Lead-containing relaxor ferroelectrics show enormous piezoelectric capabilities relating to their heterogeneous structures. Time-resolved nanobeam X-ray diffraction reveals the time and position dependences of the local lattice strain on a relaxor ...
Shinobu Aoyagi +6 more
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