Results 311 to 320 of about 288,433 (353)

Local Structural Heterogeneity and Electromechanical Responses of Ferroelectrics: Learning from Relaxor Ferroelectrics

Advanced Functional Materials, 2018
Long‐range ordering of dipoles is a key microscopic signature of ferroelectrics. These ordered dipoles form ferroelectric domains, which can be reoriented by electric fields.
Fei Li, Fei Li, Shujun Zhang, Shujun Zhang, D. Damjanović, Long-Qing Chen, T. Shrout   +6 more
semanticscholar   +1 more source

Dielectric response of ferroelectric relaxors

Solid State Communications, 2000
Abstract The real and imaginary parts of dielectric permittivities of a ferroelectric relaxor are studied by the Monte Carlo (MC) simulation as a function of frequency and temperature. The simulation results are analyzed by the fluctuation–dissipation theory (FDT). In contrast to the previous results (Appl. Phys. Lett.
Jiann-Shiun Yuan, Wen Wu, Xiaodong Duan, Weili Luo   +3 more
openaire   +3 more sources

Luminescence and Optical Properties of Relaxor Ferroelectrics

Ferroelectrics, 2005
The optical absorption spectrum, luminescence and photoconductivity on single crystals PbMg1/3Nb2/3O3 and on ceramics Pb0.91La0.09(Zr0.65Ti0.35)O 3 are investigated in the wide temperature range. The luminescence spectrum correlates with the photoconductivity spectrum.
Zverev D., Migachev S., Mamin R., Nikitin S., Sadykov M., Başaran E., Mikailov F.   +6 more
openaire   +4 more sources

Superior Thermal Stability of High Energy Density and Power Density in Domain Engineered Bi0.5Na0.5TiO3-NaTaO3 Relaxor Ferroelectrics.

ACS Applied Materials and Interfaces, 2019
Thermal-stable dielectric capacitors with high energy density and power density have attracted increasing attention in recent years. In this work, (1-x)Bi0.5Na0.5TiO3-xNaTaO3 ((1-x)BNT-xNT, x=0~0.30) lead-free relaxor ferroelectric ceramics are developed
Xuefan Zhou, H. Qi, Zhongna Yan, Guoliang Xue, Hang Luo, Dou Zhang   +5 more
semanticscholar   +1 more source

Relaxor ferroelectric devices

Ferroelectrics, 1994
Abstract Dielectric properties of relaxor ferroelectrics are characterized by giant and temperature-insensitive dielectric constants and large frequency dependence (dielectric relaxation), and therefore useful for high permittivity capacitors. Relaxor ferroelectrics also reveal superior characteristics in electrostriction and electrooptic effects ...
openaire   +2 more sources

Superior Electrostrictive Effect in Relaxor Potassium Sodium Niobate Based Ferroelectrics.

ACS Applied Materials and Interfaces, 2020
Electromechanical actuators with toxic lead-based electrostrictive materials dominate the market of high-precision electronics devices, so one of urgent aims becomes how to explore the new generation of ecofriendly electrostrictive materials with ...
Bo Wu, Chunlin Zhao, Yanli Huang, Jie Yin, Wenjuan Wu, Jiagang Wu   +5 more
semanticscholar   +1 more source

Superior and anti-fatigue electro-strain in Bi0.5Na0.5TiO3-based polycrystalline relaxor ferroelectrics

Journal of Materials Chemistry A, 2019
By composition engineering and subtle criticality confinement, a giant recoverable electro-strain (S > 0.7%) with reduced hysteresis is reported in BNT-based relaxor ferroelectrics, which can be kept at a high level (
Jie Yin, Gang Liu, X. Lv, Yuxing Zhang, Chunlin Zhao, Bo Wu, Xingmin Zhang, Jiagang Wu   +7 more
semanticscholar   +1 more source

Charge Localization in the Model of Relaxor Ferroelectrics

Ferroelectrics, 2003
Phenomenological approach to a relaxor theory is developed and some experimental results in the support of this theory are received. The optical absorption spectrum, luminescent emission and photoconductivity are investigated in the wide temperature region in PbMg 1/3 Nb 2/3 O 3 . On the basis of this data the density of states on the impurity band and
M. F. Sadykov, D. G. Zverev, R. F. Mamin, S. I. Nikitin, S. A. Migachev   +4 more
openaire   +4 more sources

Optical Properties and Model of Relaxor Ferroelectrics

Ferroelectrics, 2003
Phenomenological approach to a relaxor theory is developed and some experi-mental results in the support of this theory are received. The optical absorption spectrum, luminescent emission and photoconductivity are investigated in the wide temperature region in PbMg 1/3 Nb 2/3 O 3 .
S. I. Nikitin, M. F. Sadykov, R. F. Mamin, D. G. Zverev, S. A. Migachev   +4 more
openaire   +4 more sources

Barkhausen noise in relaxor ferroelectrics

SPIE Proceedings, 2003
Relaxor ferroelectrics form a diverse class of materials which typically show cooperative freezing into a nonergodic glassy state without long-range ferroelectric order. We discuss Barkhausen noise techniques in the non-ferroelectric regimes of the relaxors as a probe of the types of glassy order present.
Michael B. Weissman, Lambert K. Chao, Eugene V. Colla   +2 more
openaire   +2 more sources