Results 151 to 160 of about 684 (200)

Uncompensated Polarization in Incommensurate Modulations of Perovskite Antiferroelectrics [PDF]

Physical Review Letters, 2019
Complex polar structures of incommensurate modulations (ICMs) are revealed in chemically modified PbZrO3 perovskite antiferroelectrics using advanced transmission electron microscopy techniques.
Lin Zhou, Zhongming Fan, Bin Xu
exaly   +1 more source

Above-Bandgap Photovoltages in Antiferroelectrics [PDF]

Advanced Materials, 2016
The first antiferroelectric solar cell is presented. This study shows that antiferroelectric thin-film photovoltaic current can be switched on when biased into the polar phase to generate abovebandgap photovoltages in excess of 100 V and photovoltaic fields of several megavolts per centimeter, the largest ever measured for any material.
Amador Perez-Tomas, Monica Lira-Cantu, Gustau Catalan   +2 more
exaly   +5 more sources

High Energy Storage Density and Efficiency in AgNbO3 Based Relaxor Antiferroelectrics With Reduced Silver Content

Journal of the European Ceramic Society, 2023
Silver niobate based lead-free antiferroelectric ceramics have demonstrated great advantages, but the high consumption of noble metal silver may restrict their commercial application.
Shujun Zhang, Zhenyong Cen, Nengneng Luo
exaly   +2 more sources

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Atomic Insight into the Successive Antiferroelectric–Ferroelectric Phase Transition in Antiferroelectric Oxides

Nano Letters, 2023
Antiferroelectrics characterized by voltage-driven reversible transitions between antiparallel and parallel polarity are promising for cutting-edge electronic and electrical power applications. Wide-ranging explorations revealing the macroscopic performances and microstructural characteristics of typical antiferroelectric systems have been conducted ...
Ru-Jian Jiang, Yi Cao, Wan-Rong Geng, Mei-Xiong Zhu, Yun-Long Tang, Yin-Lian Zhu, Yujia Wang, Fenghui Gong, Su-Zhen Liu, Yu-Ting Chen, Jiaqi Liu, Nan Liu, Jing-Hui Wang, Xiao-Dong Lv, Shuang-Jie Chen, Xiu-Liang Ma   +15 more
openaire   +2 more sources

Antiferroelectricity in Liquid Crystals

Physical Review Letters, 2001
Physical Review ...
Brand, H., Cladis, P., Pleiner, H.
openaire   +3 more sources

Fluorite-structure antiferroelectrics

Reports on Progress in Physics, 2019
Abstract Ferroelectricity in fluorite-structure oxides like hafnia and zirconia have attracted increasing interest since 2011. Two spontaneous polarizations of the fluorite-structure ferroelectrics are considered highly promising for nonvolatile memory applications, with their superior scalability and Si compatibility compared to the ...
Min Hyuk Park, Cheol Seong Hwang
openaire   +2 more sources

Antiferroelectric to Antiferroelectric-Relaxor Phase Transition in Calcium Strontium Sulfoaluminate

Inorganic Chemistry, 2019
Structural phase transitions of calcium strontium sulfoaluminate series, (Ca1-xSrx)8[AlO2]12(SO4)2 ((CS)AS-x) with x = 0.80-1.00, are systematically investigated by powder X-ray diffraction, dielectric measurements, and pyroelectric measurements, to clarify a phase diagram of (CS)AS-x (x = 0.80-1.00).
Toru Wakamatsu, Genta Kawamura, Tomohiro Abe, Yuki Nakahira, Shogo Kawaguchi, Chikako Moriyoshi, Yoshihiro Kuroiwa, Ichiro Terasaki, Hiroki Taniguchi   +8 more
openaire   +2 more sources

Unveiling the role of chemical pressure on antiferroelectricity in NaNbO3-based antiferroelectric ceramics

Journal of Applied Physics, 2023
Chemical pressure is widely applied to antiferroelectrics (AFEs) as a criterion to enhance their antiferroelectricity. However, NaNbO3 (NN)-based ceramic with well-defined double polarization hysteresis (P–E) loops was rarely reported based on this strategy, and the effect of chemical pressure on antiferroelectricity remains to be understood.
Gengguang Luo, Kaihua Yang, Xinyang Fu, Li Ma, Zhiyi Che, Xiyong Chen, Zhenyong Cen, Qin Feng, Nengneng Luo   +8 more
openaire   +1 more source

A modern perspective on antiferroelectrics

Nature Materials
Antiferroelectrics attract attention due to their unusual physical characteristics, chief among which is the double hysteresis loop that separates their antipolar ground state from the voltage-induced polar phase. This behaviour is useful for energy storage and promising for electrocaloric cooling and other applications.
Gustau Catalan, Alexei Gruverman, Jorge Íñiguez-González, Dennis Meier, Morgan Trassin   +4 more
openaire   +5 more sources

Antiferroelectric gels

Berichte der Bunsengesellschaft für physikalische Chemie, 1998
AbstractWe have investigated the electro‐optic properties of a gel consisting of an antiferroelectric liquid crystalline (AFLC) mixture and an anisotropic polymer network, formed by photopolymerization of a mesogenic monomer. Like the pure AFLC mixture, the gel exhibits the well‐known tristable electro‐optical switching but with a decreased slope of ...
J. Strauss, H.‐S. Kitzerow
openaire   +1 more source