Results 11 to 20 of about 11,892 (273)

Ferroelectric Relaxor Quantum Crystals [PDF]

Crystals, 2018
A discussion is given of ferroelectrics (FEs) that have their Curie temperatures Tc very near absolute zero. These have differences in their dynamics in comparison with higher-temperature systems, since domain wall motion occurs via quantum mechanical ...
J. F. Scott
doaj   +4 more sources

Polarization reversal via a transient relaxor state in nonergodic relaxors near freezing temperature [PDF]

Journal of Materiomics, 2019
Among the unresolved issues in the study of relaxor ferroelectrics is the role of freezing temperature, across which the dynamics of polarization reversal in relaxor ferroelectrics changes.
Chang-Hyo Hong, Hanzheng Guo, Xiaoli Tan, John E. Daniels, Wook Jo   +4 more
doaj   +3 more sources

Dynamics of relaxor ferroelectrics [PDF]

Physical Review B, 2000
We study a dynamic model of relaxor ferroelectrics based on the spherical random-bond---random-field model and the Langevin equations of motion. The solution to these equations is obtained in the long-time limit where the system reaches an equilibrium ...
A. E. Glazounov, A. Levstik, B. E. Vugmeister, B. E. Vugmeister, B. Tadić, D. C. Mattis, G. A. Samara, G. A. Samara, H. Sompolinsky, J. Kosterlitz, L. E. Cross, L. E. Cross, L. F. Cugliandolo, L. F. Cugliandolo, N. Korner, R. Blinc, R. Blinc, R. Blinc, R. Pirc, R. Pirc, R. Pirc, V. Bobnar, V. Bobnar, V. Bobnar, V. Westphal, Y. Ishibashi, Z. Kutnjak, Z. Kutnjak   +27 more
core   +3 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
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Deciphering the atomic-scale structural origin for large dynamic electromechanical response in lead-free Bi0.5Na0.5TiO3-based relaxor ferroelectrics

Nature Communications, 2022
For relaxor ferroelectrics, correlating their properties and local structures is challenging. Here, the authors correlate the atomic-scale structure and the large dynamic electromechanical property in Bi0.5Na0.5TiO3-based relaxor ferroelectrics.
Jie Yin, Xiaoming Shi, Hong Tao, Zhi Tan, Xiang Lv, Xiangdong Ding, Jun Sun, Yang Zhang, Xingmin Zhang, Kui Yao, Jianguo Zhu, Houbing Huang, Haijun Wu, Shujun Zhang, Jiagang Wu   +14 more
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High-Entropy Lead-Free Perovskite Bi_0.2K_0.2Ba_0.2Sr_0.2Ca_0.2TiO₃ Powders and Related Ceramics: Synthesis, Processing, and Electrical Properties

Nanomaterials, 2023
A novel high-entropy perovskite powder with the composition Bi0.2K0.2Ba0.2Sr0.2Ca0.2TiO3 was successfully synthesized using a modified Pechini method.
Vasile-Adrian Surdu, Mariana-Andreea Marinică, Roxana-Elena Pătru, Ovidiu-Cristian Oprea, Adrian Ionuț Nicoară, Bogdan Ștefan Vasile, Roxana Trușca, Adelina-Carmen Ianculescu   +7 more
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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, Li Jin, Hana Uršič, Mojca Otonicar, Tadej Rojac, Dragan Damjanovic   +5 more
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Anisotropic Local Correlations and Dynamics in a Relaxor Ferroelectric [PDF]

, 2012
Relaxor ferroelectrics have been a focus of intense attention due to their anomalous dielectric characteristics, diffuse phase transitions, and strong piezoelectricity.
Grinberg, Ilya, Rappe, Andrew M., Takenaka, Hiroyuki   +2 more
core   +3 more sources

Semiconductor/relaxor 0–3 type composites: A novel strategy for energy storage capacitors

Journal of Science: Advanced Materials and Devices, 2021
We report a novel strategy to enhance the dielectric breakdown strength and the energy storage performance of lead-free relaxor ferroelectric ceramics through the fabrication of semiconductor/relaxor 0–3 type composites based on 0.6Ba(Zr0.2Ti0.8)O3-0.4 ...
A.R. Jayakrishnan, J.P.B. Silva, K. Kamakshi, V. Annapureddy, I.F. Mercioniu, K.C. Sekhar   +5 more
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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, Min-Cheol Lee, Krishna Chaitanya Pitike, Karuna K. Mishra, Qiang Zheng, Xiang Gao, Brianna L. Musico, Alessandro R. Mazza, Ram S. Katiyar, Veerle Keppens, Matthew Brahlek, Dmitry A. Yarotski, Rohit P. Prasankumar, Aiping Chen, Valentino R. Cooper, T. Zac Ward   +15 more
openaire   +3 more sources