Results 121 to 130 of about 18,880 (284)

Compositional phase diagram and microscopic mechanism of Ba_1−xCa_xZr_yTi_1−yO₃relaxor ferroelectrics

, 2017
A model of a multiphase with coexisting cubic structures is proposed to provide an atomic-scale mechanism for the relaxor behavior of lead-free BCZT relaxor ferroelectrics.
De-Jun Li, Sanwu Wang, Yaping Li, Yang Meng, Shiyang Liu, Yaogen Shen, Shi-Yu Liu, Yingdi Liu   +7 more
core   +1 more source

Atomic resolution microstructure study of Bi-doped SrTiO3

Journal of Advanced Dielectrics
Intrinsic SrTiO3 is a quantum paraelectric, but moderately Bi-doped SrTiO3 exhibits dielectric frequency dispersion similar to relaxor ferroelectrics. In this paper, detailed electron microscopic studies of the microstructures of Bi-doped SrTiO3 samples ...
Chao Li, Yijun Zhang, Guohua Dong, Guangliang Hu, Guang Yang, Chaoqiang Liu, Houwen Chen, Xiaoyong Wei   +7 more
doaj   +1 more source

Interlayer‐Sliding‐Enabled Multiferroicity and Giant Switchable Anomalous Hall Conductivity in RuO2Zn2F2 Bilayer

Advanced Science, EarlyView.
Interlayer sliding in the RuO2Zn2F2 bilayer induces ferroelectricity and enables reversible valley polarization switching. The electric dipole and valley‐resolved band edges are intimately coupled, revealing sliding ferroelectricity as a powerful mechanism for electrical control of valley degrees of freedom in 2D materials.
Djamel Bezzerga, Imran Khan, Ganie Suhail Ahmad, Jisang Hong   +3 more
wiley   +1 more source

Enhanced electrocaloric effect in lead-free relaxor ferroelectrics via point defect engineering [PDF]

The electrocaloric effect enables solid-state refrigeration technology with high energy efficiency and zero global warming potential. Normal displacive ferroelectric materials exhibit the highest electrocaloric effect just above their Curie point.
Yan, H., Yan, H, Wu, Z, Banerjee, K, Zhang, M, Hu, W., Hu, W, Zhang, M., Wu, Z., Banerjee, K.   +9 more
core   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

Advanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Studies of Relaxor Ferroelectrics with Spontaneous Polar Nanoregions

, 2017
Title: Studies of Relaxor Ferroelectrics with Spontaneous Polar Nanoregions Author: Petr Ondrejkovič Institute: Institute of Physics of the Czech Academy of Sciences Supervisor: Ing.
Ondrejkovič, Petr
core  

Single‐Atom Intercalation‐Driven Topological Ferroelectric Metal for High‐Performance Hydrogen Evolution Reaction

Advanced Science, EarlyView.
Single‐atom Cu intercalation enables porous AB3 monolayers to integrate ferroelectricity, metallicity, topology, and hydrogen evolution catalysis in one platform. Switchable FE polarization modulates work function and hydrogen adsorption thermodynamics, providing an electrically controllable route to activate basal‐plane HER activity in topological ...
Rongxuan Lu, Jian Zhang, Jialin Gong, Wenxian Li, Gang Zhang   +4 more
wiley   +1 more source

Lead-based relaxor ferroelectrics by Raman scattering

, 2017
Title: Lead-based relaxor ferroelectrics by Raman scattering Author: Iegor Rafalovskyi Institute: Institute of Physics of the Czech Academy of Sciences Supervisor: Ing.
Rafalovskyi, Iegor
core  

Effect of high pressure on the relaxor ferroelectrics Na1/2Bi1/2TiO3 (NBT) and PbMg(1/3)Nb(2/3)O3 (PMN)

, 2004
The aim of the present paper is to review and briefly discuss recent experimental results on the effect of high pressure (p > 1.5 GPa) on relaxor ferroelectrics, exemplified by Na1/2Bi1/2TiO3 and PbMg1/3Nb2/3O3.
Glazer, A.,, Dkhil, B., Bouvier, Pierre, Kreisel, Jens, Chaabane, B., Thomas, Pamela, A., Welberry, T., Thomas, Pamela,, Glazer, A., Michael   +8 more
core   +2 more sources

Neuromorphic Near‐Sensor and In‐Sensor Computing Enabled by Next‐Generation Material‐Based Sensors

Advanced Science, EarlyView.
This Review presents a structural framework that classifies neuromorphic sensing into near‐sensor and in‐sensor architectures, clarifying physical coupling between sensing and computation. The framework connects neural and synaptic device functions with recent advances in optical, mechanical, and chemical sensing, compares energy consumption and ...
Su Yeon Jung, Gwang Ya Kim, Sejin Kim, Hyunjong Seo, Se Gi Lee, Sang Min Won, Dongjoon Rhee, Joohoon Kang   +7 more
wiley   +1 more source