Results 41 to 50 of about 8,790 (190)

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

Evidence for existence of Functional Monoclinic Phase in Sodium Niobate based Solid Solution by Powder Neutron Diffraction

, 2018
We have carried out systematic temperature-dependent neutron diffraction measurements in conjunction with dielectric spectroscopy from 6 to 300 K for sodium niobate based compounds (1-x) NaNbO3 -xBaTiO3 (NNBTx).
Chaplot, S. L., Jauhari, Mrinal, Krishna, P. S. R., Mishra, S. K., Mittal, R., Reddy, V. R.   +5 more
core   +1 more source

Electrocaloric effect in relaxor ferroelectrics [PDF]

Journal of Applied Physics, 2011
A theoretical model for the electrocaloric effect (ECE) in relaxor ferroelectrics is presented. By solving a self-consistent relation for the ECE temperature change ΔT and minimizing numerically the mean field free energy for relaxors, the field and temperature dependence of ΔT is calculated.
Pirc, R., Kutnjak, Z., Blinc, R., Zhang, Q. M.   +3 more
openaire   +2 more sources

Large Electrocaloric Effect in Stretched Relaxor Ferroelectric Polymers near Morphotropic Phase Boundary

Chemistry
Use of the morphotropic phase boundary (MPB) is a promising approach to enhance the electrocaloric effect in ferroelectric polymers. This is usually achieved by a composition method, and polymer processing near the MPB to tune electrocaloric response has
Linxiao Xu, Yuquan Liu, Jiahong Li, Hangyao Wu, Yuanqi Wang, Ze Yuan, Ling Cheng, Yang Li, Huamin Zhou, Yang Liu   +9 more
doaj   +1 more source

Polarization behavior in a compositionally graded relaxor–ferroelectric crystal visualized by angle-resolved polarized Raman mapping

Communications Physics, 2023
Explaining the properties and functions of materials in terms of their atomic arrangements and inhomogeneous structures is a fundamental challenge for the development of ferroelectric oxides.
Shinya Tsukada, Yasuhiro Fujii, Akari Kanagawa, Yukikuni Akishige, Kenji Ohwada   +4 more
doaj   +1 more source

Frequency and temperature dependent electric polarization, relaxation, and transport properties of Mo and W doped BaTiO3

Results in Physics, 2021
In this article, we report the structural, dielectric, electronic, and transport properties of Mo and W doped BaTiO3 ceramic. The BaTiO3 (BTO), BaTi0.85Mo0.15O3 (BTMO), and BaTi0.85W0.15O3 (BTWO) samples were prepared by double sintering ceramic ...
Md. Sarowar Hossain, Sankar Kumar Das, Md. Moniruzzaman, M.A. Hakim, M.A. Basith   +4 more
doaj   +1 more source

Polar and non-polar atomic motions in the relaxor ferroelectric PLZT from dielectric, anelastic and NMR relaxation

, 2004
Dielectric, anelastic and ^139La NMR relaxation measurements have been made on the relaxor ferroelectric Pb(1-3x/2)La(x)Zr(0.2)Ti(0.8)O(3) (PLZT) with x = 0.22.
Cordero, F., Corti, M., Craciun, F., Galassi, C., Piazza, D., Tabak, F.   +5 more
core   +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

Strategies for regulating energy storage characteristics of relaxor ferroelectric films

Shenzhen Daxue xuebao. Ligong ban
Relaxor ferroelectric film capacitors exhibit several advantageous characteristics, including high power density, rapid charge and discharge rates, lightweight construction, compact size, and ease of integration, aligning with the ongoing trend toward ...
WU Qiong, DONG Shuxiang
doaj   +1 more source

Bismuth zinc niobate: BZN-BT, a new lead-free BaTiO3-based ferroelectric relaxor?

Journal of Advanced Dielectrics, 2020
The novel lead-free ferroelectric relaxor system x(Bi(Zn2/3 Nb1/3)O3)(1 − x)BaTiO3 (xBZN(1 − x)BT) has received interest as a high-capacity relaxor dielectric material.
Jessica Marshall, David Walker, Pam Thomas   +2 more
doaj   +1 more source