Results 21 to 30 of about 2,097 (293)

Barkhausen Noise in a Relaxor Ferroelectric [PDF]

Physical Review Letters, 2001
Barkhausen noise, including both periodic and aperiodic components, is found in and near the relaxor regime of a familiar relaxor ferroelectric, PbMg$_{1/3}$Nb$_{2/3}$O$_3$, driven by a periodic electric field. The temperature dependences of both the amplitude and spectral form show that the size of the coherent dipole moment changes shrink as the ...
Colla, Eugene V., Chao, Lambert K., Weissman, M. B.   +2 more
openaire   +3 more sources

Domain structure and dielectric diffusion-relaxation characteristics of ternary PbO3–PbO3–PbTiO3 ceramics

Journal of Advanced Dielectrics, 2022
Relaxor-based ternary Pb([Formula: see text][Formula: see text])O3–Pb([Formula: see text][Formula: see text])O3–PbTiO3 (PIN–PMN–PT) single crystals and ceramics are promising candidates for high-performance electromechanical conversion devices.
Xudong Qi, Kai Li, Lang Bian, Enwei Sun, Limei Zheng, Rui Zhang   +5 more
doaj   +1 more source

Revealing the role of the constant phase element in relaxor ferroelectrics

Communications Physics, 2022
Relaxor ferroelectrics are a type of material exhibiting electrostriction whereby a change in the material shape occurs under an applied electric field; however, although known by the community for many years the underlying mechanisms of the phenomenon ...
Xavier Vendrell, Julia Ramírez-González, Zuo-Guang Ye, Anthony R. West   +3 more
doaj   +1 more source

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

Paraelectric and ferroelectric states in a model for relaxor ferroelectrics [PDF]

Physical Review B, 2013
10 pages, 7 ...
Guzmán-Verri, G. G., Littlewood, P. B., Varma, C. M.   +2 more
openaire   +2 more sources

Giant electrocaloric effect in the thin film relaxor ferroelectric 0.9 PbMg1/3Nb2/3O3–0.1 PbTiO3 near room temperature. [PDF]

, 2006
We have recently observed a giant electrocaloric effect (12 K in 25 V) in 350 nm sol-gel PbZr0.95Ti0.05O3 films near the ferroelectric Curie temperature of 242oC.
Zhang, Qi, Mischenko, A. S., Zhang, Q, Zhang, Q., Whatmore, Roger W., J. F. Scott, Whatmore, RW, Mischenko, AS, Scott, JF, Scott, J. F., A. S. Mischenko, R. W. Whatmore, Mathurb, N. D., Q. Zhang, Mathur, ND, N. D. Mathur, Mathur, N. D., Mischenkoa, A. S.   +17 more
core   +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

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

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

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 tunneling and not by thermally activated diffusion.
openaire   +4 more sources