Results 31 to 40 of about 324,033 (358)

Dielectric behaviour of (Ba0.77Ca0.23)(Ti0.98Dy0.02)O3 ceramics [PDF]

Processing and Application of Ceramics, 2015
In this study, BaTiO3 is modified with Ca2+ and in addition doped with Dy3+ at the B site lattice. The main idea is to search for new lead-free ferroelectric material and improve their properties.
Abdul Moquim, Manas R. Panigrahi
doaj   +1 more source

Anomalous change in leakage and displacement currents after electrical poling on lead-free ferroelectric ceramics [PDF]

, 2015
We report the polarization, displacement current and leakage current behavior of a trivalent nonpolar cation Al cation substituted lead free ferroelectric NBT-BT electroceramics with tetragonal phase and P4mm space group symmetry.
Ashok Kumar, Hitesh Borkar, J. F. Scott, Lampert M. A., M. Tomar, Sze S. M., Tredgold R. H., Vinay Gupta   +7 more
core   +2 more sources

Structural, dielectric, and ferroelectric properties of lead-free BCZT ceramics elaborated by low-temperature hydrothermal processing [PDF]

Journal of Materials Science: Materials in Electronics, 2020
Lead-free Ba 0.85 Ca 0.15 Zr 0.10 Ti 0.90 O 3 (BCZT) ceramics have demonstrated excellent dielectric, ferroelectric, and piezoelectric properties in comparison to lead-based materials.
Zouhair Hanani, D. Mezzane, M. Amjoud, Y. Gagou, K. Hoummada, C. Perrin, A. Razumnaya, Z. Kutnjak, Adnane Bouzina, M. Marssi, M. Gouné, B. Rožič   +11 more
semanticscholar   +1 more source

Eu-doped K0.5Na0.5NbO3-(Ba,Sr)TiO3: A novel lead-free luminescent ferroelectric transparent ceramic with reversible photochromism [PDF]

Journal of Advanced Dielectrics, 2019
Photochromic (PC) luminescent ferroelectric materials have aroused great interest because of their potential applications in optical information memories, optical switches and bio-imaging. However, those materials are basically opaque.
Jinfeng Lin, Xiao Wu, Cong Lin, Tengfei Lin, Yaojin Wang   +4 more
doaj   +1 more source

Ordered coalescence of nano-crystals in alkaline niobate ceramics with high remanent polarization

Journal of Materiomics, 2017
Lead-free alkali niobates Na0.5K0.5NbO3 (NKN) ceramics, with significantly enhanced ferroelectric remanent polarization (Pr), were prepared using Spark Plasma Sintering (SPS).
Zhijian Shen, Daniel Grüner, Mirva Eriksson, Lyubov M. Belova, Ce-Wen Nan, Haixue Yan   +5 more
doaj   +1 more source

Relaxor Behaviour in Ferroelectric Ceramics [PDF]

, 2012
Ferroelectric materials are commonly characterized by high dielectric permittivity values [1]. Usually, for the well-known ‘normal’ ferroelectrics the temperature of the maximum real di‐ electric permittivity (Tm) corresponds to the ferroelectric-paraelectric (FE-PE) phase transi‐ tion temperature (TC) [2].
O. García-Zaldívar, Y. González-Abreu, F. Calderón-Piñar, Aimé Peláiz-Barranco   +3 more
openaire   +3 more sources

Dielectric and polarization experiments in high loss dielectrics: a word of caution

, 2008
The recent quest for improved functional materials like high permittivity dielectrics and/or multiferroics has triggered an intense wave of research. Many materials have been checked for their dielectric permittivity or their polarization state.
Lines M. E., M. A. Subramanian, M. Maglione, Maglione M., Sze S. M., Van Turnhout J.   +5 more
core   +4 more sources

Retrievable Hierarchically Porous Ferroelectric Ceramics for “Greening” the Piezo‐Catalysis Process

Advanced Functional Materials
Powder‐based piezo‐catalysis, as an effective approach to degrade wastewater and produce hydrogen from water splitting, has been widely used in the field of energy conservation and pollution reduction.
Hanyu Gong, Yan Zhang, Jingjing Ye, Xiang Zhou, Xuefan Zhou, Yan Zhao, Kaiyu Feng, Hang Luo, Dou Zhang, Chris Bowen   +9 more
semanticscholar   +1 more source

Ferroelectric tungsten bronze-based ceramics with high-energy storage performance via weakly coupled relaxor design and grain boundary optimization

Nature Communications
A multiscale regulation strategy has been demonstrated for synthetic energy storage enhancement in a tetragonal tungsten bronze structure ferroelectric.
Jiaming Liu, Ying Jiang, Weichen Zhang, Xu Cheng, Peiyao Zhao, Yichao Zhen, Y. Hao, Limin Guo, Ke Bi, Xiaohui Wang   +9 more
semanticscholar   +1 more source

B-site non-stoichiometric (Pb0.97La0.02)(Zr0.95Ti0.05)O3 antiferroelectric ceramics for energy storage

Journal of Asian Ceramic Societies, 2018
Non-stoichiometric (Pb0.97La0.02)(Zr0.95Ti0.05)1+yO3 (y = −0.03, −0.01, 0.01 and 0.03) antiferroelectric ceramics were successfully prepared via a solid-state reaction route.
Zhong-Hua Niu, Yan-Ping Jiang, Xin-Gui Tang, Qiu-Xiang Liu, Wen-Hua Li   +4 more
doaj   +1 more source