Results 21 to 30 of about 9,222 (286)

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

Orbital-Order Driven Ferroelectricity and Dipolar Relaxation Dynamics in Multiferroic GaMo$_4$S$_8$ [PDF]

, 2018
We present the results of broadband dielectric spectroscopy of GaMo$_4$S$_8$, a lacunar spinel system that recently was shown to exhibit non-canonical, orbitally-driven ferroelectricity.
Geirhos, K., Krohns, S., Kézsmárki, I., Lunkenheimer, P., Nakamura, H., Tabata, Y., Waki, T.   +6 more
core   +2 more sources

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]

, 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   +4 more sources

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

Ferroelectric properties of charge-ordered alpha-(BEDT-TTF)2I3 [PDF]

, 2015
A detailed investigation of the out-of-plane electrical properties of charge-ordered alpha-(BEDT-TTF)2I3 provides clear evidence for ferroelectricity. Similar to multiferroic alpha-(BEDT-TTF)2Cu[N(CN)2]Cl, the polar order in this material is ascribed to ...
Hartmann, B., Krohns, S., Lang, M., Loidl, A., Lunkenheimer, P., Müller, J., Schweitzer, D.   +6 more
core   +2 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

Ultrahigh energy density and improved discharged efficiency in bismuth sodium titanate based relaxor ferroelectrics with A-site vacancy

Journal of Materiomics, 2018
Novel A-site deficient (1-x-y)Bi0.5Na0.5TiO3-xBaTiO3-yBi0.2Sr0.7TiO3 lead-free relaxor ferroelectrics have been explored for energy storage property. Particularly slim polarization hysteresis (P-E) loops are observed in 0.655Bi0.5Na0.5TiO3-0.065BaTiO3-0 ...
Xiao Liu, Jing Shi, Fangyuan Zhu, Huiling Du, Tangyuan Li, Xiangchun Liu, Hai Lu   +6 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

Synchrotron x-ray Studies of Superlattice Ordering in Pb(Mg1/3Nb2/3)O3 Single Crystals Doped with PbTiO3 [PDF]

, 2003
The temperature dependence of the superlattice reflections: a) F spots and b) alpha spots in a lead magnesium niobate (PMN) single crystals containing 0% and 6% of PbTiO3 (PT) has been studied using synchrotron x-ray scattering techniques.
Chen, Haydn, Colla, Eugene, Tkachuk, A., Zschack, Paul   +3 more
core   +2 more sources