Results 81 to 90 of about 4,429 (294)

Nanoscale ferroelectric/relaxor composites: Origin of large strain in lead-free Bi-based incipient piezoelectric ceramics

, 2016
La-doped (Bi0.5Na0.41K0.09)TiO3 ceramics were synthesized using a conventional solid-state reaction route. X-ray diffraction and electric-field-induced polarization studies revealed a phase transformation from a ferroelectric to a relaxor with increasing
Jo, Wook, Lee, Hyun Young, Lee, Hyun-Young, Wang, Ke, Lee, Jae-Shin, Han, Hyoung-Su, Kang, Jin-Kyu, Yao, Fang-Zhou, Li, Jing-Feng, Khansur, Neamul Hayet, Dinh, Thi Hinh, Daniels, John, Daniels, John ; https://orcid.org/   +12 more
core   +1 more source

LEAD: Literature Enhanced Ab Initio Discovery of Nitride Dusting Layers for Enhanced Tunnel Magnetoresistance and Lower Resistance Magnetic Tunnel Junctions

Advanced Materials, EarlyView.
Magnetic tunnel junctions (MTJs) using MgO tunnel barriers face challenges of high resistance‐area product and low tunnel magnetoresistance (TMR). To discover alternative materials, Literature Enhanced Ab initio Discovery (LEAD) is developed. The LEAD‐predicted materials are theoretically evaluated, showing that MTJs with dusting of ScN or TiN on ...
Sabiq Islam, William S. Rogers, Chen‐Yu Hu, Ming‐Yuan Song, Xinyu Bao, Shehrin Sayed, Jean Anne C. Incorvia   +6 more
wiley   +1 more source

Self‐Powered Flexible Triboelectric‐Gated Ion‐Gel Transistor for Neuromorphic Tactile Sensing and Human Activity Recognition

Advanced Materials, EarlyView.
A fully flexible ion‐gel‐gated graphene‐channel transistor driven by a triboelectric nanogenerator enables self‐powered tactile sensing and synaptic learning. Mimicking spike‐rate‐dependent plasticity, the device exhibits frequency‐selective potentiation and depression, supporting rate‐coded neuromorphic computation even under flex.
Hanseong Cho, Seoyeon Park, Youngmin Lee, Sejoon Lee   +3 more
wiley   +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

Microscopia de força piezoeléctrica de relaxors ferroeléctricos

, 2010
Doutoramento em Ciência e Engenharia de MateriaisNesta tese, ferroeléctricos relaxor (I dont know uf the order is correct) de base Pb das familias (Pb,La)(Zr,Ti)O3 (PLZT), Pb(Mg1/3,Nb2/3)O3-PbTiO3 (PMN-PT), Pb(Zn1/3,Nb2/3)O3-PbTiO3 (PZN-PT) foram ...
Kiselev, Dmitry
core  

Ultrahigh capacitive energy density in ion-bombarded relaxor ferroelectric films [PDF]

, 2020
Dielectric capacitors can store and release electric energy at ultrafast rates and are extensively studied for applications in electronics and electric power systems. Among various candidates, thin films based on relaxor ferroelectrics, a special kind of
Acharya, Megha, Donahue, Patrick, Parsonnet, Eric, Velarde, Gabriel, Martin, Lane W, Kim, Jieun, Garcia, David, Saremi, Sahar, Qualls, Alexander   +8 more
core   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +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  

Static and dynamic polar nanoregions in relaxor ferroelectric Ba(Ti1-xSnx)O3 system at high temperature [PDF]

, 2012
Relaxor ferroelectrics are materials exhibiting dielectric dispersions in their maximum permittivity temperature without macroscopic phase transition into a ferroelectric state.
Li, Y.L., Yao, X., Zhu, J., Cheng, Z.Y., Urban, K., Jia, C.L., Ye, Z.G., Yu, R., Bokov, A., Wei, X.Y., Xie, L.   +10 more
core   +1 more source