Results 291 to 300 of about 324,033 (358)

Fracture features of ferroelectric ceramics

Ferroelectrics, 1998
Abstract Some mechanisms of the strength and fracture toughness alteration for the ferroelectric ceramics (FC) using the early computer simulations are considered. The microcracking processes and effects of the crack bridging are studied. Finally, the growth features of the steady-state crack into ferroelectrics domain structure are investigated.
Lyubov Parinova, Ivan A. Parinov
openaire   +2 more sources

Enhanced energy-storage performance with excellent stability under low electric fields in BNT–ST relaxor ferroelectric ceramics

Journal of Materials Chemistry C, 2019
Relaxor ferroelectrics are promising candidates for pulsed power dielectric capacitor applications because of their excellent energy-storage properties.
Weigang Ma, Yiwei Zhu, M. Marwat, Pengyuan Fan, Bing Xie, D. Salamon, Z. Ye, Haibo Zhang   +7 more
semanticscholar   +1 more source

Nonlinear Deformation of Ferroelectric Ceramics

Journal of the American Ceramic Society, 1993
Ferroelectric ceramics used in advanced actuator systems may be subject to high stresses and large deformations that may lead to nonlinearity and performance degradation. A preliminary experimental investigation has been undertaken to study the relevant mechanical responses.
H.C. Cao, Anthony G. Evans
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Ferroelectricity in a pure BiFeO3 ceramic

Applied Physics Letters, 2000
The difficulties in synthesizing phase pure BiFeO3 are well known. In this letter we are reporting the optimized synthesis conditions for obtaining phase pure BiFeO3 ceramic. The oxide mixing technique followed by leaching with dilute nitric acid has been used for the synthesis.
Mahesh Kumar, V. R. Palkar, Kota Srinivas, S. V. Suryanarayana   +3 more
openaire   +2 more sources

Polar Vortices in Relaxor Ferroelectric Ceramics for High-Efficiency Capacitive Energy Storage.

ACS Nano
Polar vortices are predominantly observed within the confined ferroelectric films and the ferroelectric/paraelectric superlattices. This raises the intriguing question of whether polar vortices can form within relaxor ferroelectric ceramics and ...
Fangling Chen, Mo Chen, Jingji Zhang, Weishen Liu, Huiwei Du, Quan Zong, Huanan Yu, Yang Zhang, Jigong Hao, J. Wang, Jiwei Zhai   +10 more
semanticscholar   +1 more source

Large Flexoelectriclike Response from the Spontaneously Polarized Surfaces in Ferroelectric Ceramics.

Physical Review Letters, 2018
Nonpoled ferroelectric ceramics are thought to be nonpolar because of randomly oriented grains and the formation of ferroelectric domains in the grains.
Xiaotong Zhang, Q. Pan, D. Tian, Wanfeng Zhou, Pan Chen, Haifeng Zhang, Baojin Chu   +6 more
semanticscholar   +1 more source

Ultrahigh recoverable energy storage density and efficiency in barium strontium titanate-based lead-free relaxor ferroelectric ceramics

Applied Physics Letters, 2018
Recently, dielectrics for energy storage have been attracting increasing attention due to their ultrahigh power density. However, the widespread application of dielectrics remains limited by their low energy density.
Wei Huang, Ying Chen, Xin Li, Genshui Wang, Ningtao Liu, Song Li, Mingxing Zhou, Xianlin Dong   +7 more
semanticscholar   +1 more source

Elastocaloric effect in ferroelectric ceramics

Applied Physics Letters, 2015
Elastocaloric effect has been experimentally demonstrated in bulk (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 polycrystalline ferroelectric material. Predictions were made using Maxwell's relationship for elastocaloric effect. A maximum elastocaloric effect of 1.55 K was observed for an initial material temperature of 340 K and applied compressive stress of 0–250 MPa
Satyanarayan Patel, Rahul Vaish, Aditya Chauhan   +2 more
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Significantly enhanced dielectric breakdown strength of ferroelectric energy-storage ceramics via grain size uniformity control: Phase-field simulation and experimental realization

, 2020
The utilization of ferroelectric ceramics in electrical energy storage has become a hot topic due to the urgent need for advanced pulsed power and high power energy storage applications. Much attention has been paid to achieving nanograined ferroelectric
Longwen Wu, Ziming Cai, Chaoqiong Zhu, P. Feng, Long-tu Li, Xiao-hui Wang   +5 more
semanticscholar   +1 more source

Phenomenological Theory of Ferroelectric Ceramics

The Journal of the Acoustical Society of America, 1953
A ferroelectric ceramic represents in its virgin state, mildly idealized, a three-dimensionally isotropic continuum; in the polarized state, however, a two-dimensionally isotropic one. A general conservative medium of the latter type has ten independent adiabatic elastodielectric parameters.
openaire   +2 more sources