Results 41 to 50 of about 9,352 (287)

Critical state to achieve a giant electric field-induced strain with a low hysteresis in relaxor piezoelectric ceramics

Journal of Materiomics, 2021
Due to the extrinsic contribution of domain wall motions to electro-strains, the incompatibility of the large electro-strain with a low hysteresis in piezoelectric ceramics is a stumbling block for designing high-performance piezoelectrical actuators ...
Xiang Xia, Xingan Jiang, Jiangtao Zeng, Liaoying Zheng, Zhenyong Man, Huarong Zeng, Guorong Li   +6 more
doaj   +1 more source

Coexistence of the Critical Slowing Down and Glassy Freezing in Relaxor Ferroelectrics

, 1999
We have developed a dynamical model for the dielectric response in relaxor ferroelectrics which explicitly takes into account the coexistence of the critical slowing down and glassy freezing.
A. Levstik, A. Tagantsev, A.E. Glazounov, B. E. Vugmeister, B.E. Vugmeister, B.E. Vugmeister, B.E. Vugmeister, D. Vieland, E. Courtens, G. Burns, G.A. Samara, H. Rabitz, J. Toulouse, K. Binder, L.E. Cross, M.D. Glinchuk, N. de Mathan, R. Blinc, R. Blinc, R. Sommer, S.B. Vakhrushev, T. Egami, V. Westphal, W. Kleemann   +23 more
core   +1 more source

Finite-size effects in lead scandium tantalate relaxor thin films [PDF]

, 2020
Large electromechanical effects in relaxor ferroelectrics are generally attributed to the collective response of an ensemble of correlated, nanometer-sized polar structures induced by chemical and charge disorder.
Fernandez, A, Kim, J, Martin, LW, Meyers, D, Saremi, S   +4 more
core  

Ab Initio Study on 3D Anisotropic Ferroelectric Switching Mechanism and Coercive Field in HfO2 and ZrO2

Advanced Functional Materials, EarlyView.
This study uncovers a new switching mechanism in HfO2 and ZrO2, where the absence of a non‐polar layer along the a‐direction induces interaction between polar layers. Consequently, the switching barriers for growth are lower than those for nucleation in this direction, leading to a size‐dependent coercive field that matches experimental observations ...
Kun Hee Ye, Taeyoung Jeong, Seungjae Yoon, Dohyun Kim, Yunjae Kim, Cheol Seong Hwang, Jung‐Hae Choi   +6 more
wiley   +1 more source

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

Advanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp, Brahmdutta Dixit, Yifei Yang, Deyuan Lyu, Thomas Peterson, Qi Jia, Yu‐Chia Chen, Jian‐Ping Wang   +7 more
wiley   +1 more source

First-Principles Studies of Local Order in Relaxor Ferroelectrics

, 1998
A key to optimizing the growth of the new single-crystal relaxor ferroelectrics is resolving basic questions concerning their structural properties and energetics.
Krakauer, Henry, Wensell, Mark
core   +1 more source

Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates [PDF]

, 2013
Ferroelectric domain structure evolution induced by an external electric field was investigated by means of nematic liquid crystal (NLC) method in two strontium-barium niobate single crystals of nominal composition: Sr_{0.70}Ba_{0.30}Nb_{2}O_{6} (SBN:70 -
Dec, J., Lukasiewicz, T., Matyjasek, K., Miga, S.   +3 more
core   +2 more sources

Enhanced Switching Performance in Single‐Crystalline PbTiO3 Ferroelectric Memristors for Replicating Synaptic Plasticity

Advanced Functional Materials, EarlyView.
This study demonstrated single‐crystalline PbTiO3‐based memristors with atomically sharp interfaces, well‐ordered lattices, and minimal lattice mismatch. The devices exhibited an ON/OFF ratio exceeding 105, high stability, and rich resistance‐state modulation.
Haining Li, Zhiqiang Liao, Risa Kataoka, Md Sarker Shamim, Takeshi Kijima, Hiroyasu Yamahara, Hitoshi Tabata, Munetoshi Seki   +7 more
wiley   +1 more source

Designing polar textures with ultrafast neuromorphic features from atomistic simulations

Neuromorphic Computing and Engineering, 2023
This review summarizes recent works, all using a specific atomistic approach, that predict and explain the occurrence of key features for neuromorphic computing in three archetypical dipolar materials, when they are subject to THz excitations.
Sergey Prosandeev, Sergei Prokhorenko, Yousra Nahas, Yali Yang, Changsong Xu, Julie Grollier, Diyar Talbayev, Brahim Dkhil, L Bellaiche   +8 more
doaj   +1 more source

Tetragonal tungsten bronze compounds: relaxor vs mixed ferroelectric - dipole glass behavior

, 2010
We demonstrate that recent experimental data (E. Castel et al J.Phys. Cond. Mat. {\bf 21} (2009), 452201) on tungsten bronze compound (TBC) Ba$_2$Pr$_x$Nd$_{1-x}$FeNb$_4$O$_{15}$ can be well explained in our model predicting a crossover from ...
Boatner L A, Castel E, de Almeida J R L, Fischer K H, Korenblit I Ya, Smolenskii G A, V A Stephanovich   +6 more
core   +1 more source