Results 61 to 70 of about 70,379 (187)

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

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

The crossover from a ferroelectric to a relaxor state in lead-free solid solutions

, 2004
We investigate the gradual crossover from ferroelectric to relaxor behaviour versus substitution in lead-free ceramics..
SIMON, Annie, RAVEZ, Jean, MAGLIONE, Mario   +2 more
core   +1 more source

A ferroelectric relaxor polymer-enhanced p-type WSe₂transistor

, 2018
A novel high-performance few-layer WSe2p-FETs doped and gated by the ferroelectric relaxor tripolymer P(VDF-TrFE-CFE).
Hong Shen, Chong Yin, Shuo Sun, Xudong Wang, Jinglan Sun, Piyi Du, Jianlu Wang, Chi Wah Leung, Yan Chen, Tie Lin, Hon Fai Wong, Xiangjian Meng, Dan Li, Junhao Chu, Zongrong Wang   +14 more
core   +1 more source

Ultrahigh energy storage performance via defect engineering in Sr0.7Bi0.2TiO3 lead-free relaxor ferroelectrics

Journal of Materiomics
With the development of advanced electronic memory and the advocacy of environmental friendliness, lead-free relaxor ferroelectric capacitors with slim hysteresis loops have received great attention in high power energy storage applications.
Yutao Luo, Tianyang Zheng, Song Liu, Yunfei Liu, Yinong Lyu, Jin Luo   +5 more
doaj   +1 more source

Topological Point Defects in Relaxor Ferroelectrics

Physical Review Letters, 2016
First-principles-based effective Hamiltonian simulations are used to reveal the hidden connection between topological defects (hedgehogs and antihedgehogs) and relaxor behavior. Such defects are discovered to predominantly lie at the border of polar nanoregions in both Ba(Zr_{0.5}Ti_{0.5})O_{3} (BZT) and Pb(Sc_{0.5}Nb_{0.5})O_{3} (PSN) systems, and the
Nahas, Y., Prokhorenko, S., Kornev, I., Bellaiche, L.   +3 more
openaire   +3 more sources

Phase field modeling of relaxor ferroelectrics and ferroelectric/relaxor composites

, 2016
Relaxor ferroelectrics are a class of disordered crystals with very high piezoelectric effect [1]. In order to reveal its unique physical origins and to explore its application potential, a lot of investigations have been carried out both theoretically ...
Rödel, Jürgen, Xu, Bai-Xiang, Wang, Shuai   +2 more
core  

Propensity for spontaneous relaxor-ferroelectric transition in quenched(Na1/2Bi1/2)TiO3-BaTiO3 compositions

, 2018
Recently, quenching lead-free non-ergodic relaxor Na1/2Bi1/2TiO3-BaTiO3 (NBT-BT) materials has been reported to increase the thermal depolarization temperature and enhance the lattice distortion.
Jurij Koruza, Koruza, Jurij, Kodumudi Venkataraman, Lalitha, Rödel, Jürgen, Lalitha K. V., Jürgen Rödel   +5 more
core   +1 more source

Composition and grain size-driven ferroelectric-relaxor crossover in Ba(Zr,Ti)O3 ceramics [PDF]

Processing and Application of Ceramics, 2009
First Ba(ZrxTi1-x)O3 (BZT) ceramics with various compositions prepared by solid state, with high density, homogeneous microstructures and grain sizes in the range (0.7–4) μm were studied.
Cristina Elena Ciomaga, Maria T. Buscaglia, Massimo Viviani, Vincenzo Buscaglia, Liliana Mitoseriu, Paolo Nanni, Carmen Galassi   +6 more
doaj  

Dielectric and AC-conductivity studies of Dy2O3 doped (K0.5Na0.5)NbO3 ceramics

AIP Advances, 2014
(K0.5Na0.5)NbO3 + x wt.% Dy2O3 (x = 0–1.5) ferroelectric ceramics were prepared by conventional solid state reaction method. XRD patterns revealed that orthorhombic symmetry has transformed into psuedocubic symmetry with increasing the substitution of ...
Mahesh Peddigari, Subhash Thota, Dobbidi Pamu   +2 more
doaj   +1 more source