Results 31 to 40 of about 292,067 (328)

Large energy density and high efficiency achieved simultaneously in Bi(Mg0.5Hf0.5)O3-modified NaNbO3 ceramics

Results in Physics, 2023
A novel lead-free relaxor ferroelectric ceramics, (1-x)NaNbO3-xBi(Mg0.5Hf0.5)O3 [NN-xBMH, x  = 0.00, 0.05, 0.10, 0.15, 0.20 and 0.25] were designed and fabricated for the first time via the standard solid-phase reaction method.
Siyuan Zhang, Wenhua Li, Yansong Zhang, Xingui Tang, Yanping Jiang, Xiaobin Guo   +5 more
doaj   +1 more source

Simultaneously achieving giant piezoelectricity and record coercive field enhancement in relaxor-based ferroelectric crystals

Nature Communications, 2022
High-drive electromechanical applications require ferroelectrics accounting for a large coercive field and high piezoelectricity simultaneously but it is still a challenge. Here, the authors demonstrate it in a relaxor-based ferroelectric crystal.
Liya Yang, Houbing Huang, Zengzhe Xi, Limei Zheng, Shiqi Xu, Gang Tian, Yuzhi Zhai, Feifei Guo, Lingping Kong, Yonggang Wang, Weiming Lü, Long Yuan, Minglei Zhao, Haiwu Zheng, Gang Liu   +14 more
doaj   +1 more source

On the Enhancement of Energy Storage Performance in Modified Relaxor Ferroelectric Ceramics for Pulsed Power Applications

Crystals, 2023
Relaxor-type ferroelectrics show important potential in energy storage fields due to their significantly enhanced energy performance and good temperature stability compared to normal ferroelectrics. Here, a novel, high-performance ternary composition, (0.
Hao Zhang, Zhe Zhu, Zhonghua Yao, Hua Hao, Lingyun Wang, Minghe Cao, Hanxing Liu   +6 more
doaj   +1 more source

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

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   +1 more source

Dynamics of relaxor ferroelectrics [PDF]

Physical Review B, 2001
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 state in the presence of random local electric fields.
Pirc, R., Blinc, R., Bobnar, V.
openaire   +2 more sources

Large Piezoelectric Response in Hybrid Rare-Earth Double Perovskite Relaxor Ferroelectrics.

Journal of the American Chemical Society, 2020
Piezoelectric materials are technologically important, and the most used are perovskite ferroelectrics. In recent years, more and more emerging areas have put forward new requirements for piezoelectric materials, such as light weight, low acoustic ...
Chao Shi, Jia-Jun Ma, Jia-Ying Jiang, Miao-Miao Hua, Qi Xu, Hui Yu, Yi Zhang, Heng‐Yun Ye   +7 more
semanticscholar   +1 more source

Giant dynamic electromechanical response via field driven pseudo-ergodicity in nonergodic relaxors

Nature Communications, 2023
Enhanced electromechanical response can commonly be found during the crossover from normal to relaxor ferroelectric state, making relaxors to be potential candidates for actuators.
He Qi, Tengfei Hu, Shiqing Deng, Hui Liu, Zhengqian Fu, Jun Chen   +5 more
doaj   +1 more source

Comment on "Giant electromechanical coupling of relaxor ferroelectrics controlled by polar nanoregion vibrations". [PDF]

Sci Adv, 2019
Gehring PM, Xu Z, Stock C, Xu G, Parshall D, Harriger L, Gehring CA, Li X, Luo H.   +8 more
europepmc   +3 more sources

Origin of dielectric relaxor behavior in PVDF-based copolymer and terpolymer films

AIP Advances, 2018
Relaxor ferroelectrics exhibit frequency-dispersion of their dielectric permittivity peak as a function of temperature, the origin of which has been widely debated. Microscopic understanding of such behavior for polymeric ferroelectrics has presented new
Abhijit Pramanick, Naresh C. Osti, Niina Jalarvo, Scott T. Misture, Souleymane Omar Diallo, Eugene Mamontov, Y. Luo, Jong-Kahk Keum, Ken Littrell   +8 more
doaj   +1 more source

Relaxor Ferroelectric Polymers: Insight into High Electrical Energy Storage Properties from a Molecular Perspective

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, Yen-Ting Lin, Aziguli Haibibu, Wenhan Xu, Yao Zhou, Li Li, Seong H. Kim, Qing Wang   +7 more
doaj   +1 more source