Results 201 to 210 of about 96,601 (245)

Energy storage properties of BNT-BT based solid solution

2015 Joint IEEE International Symposium on the Applications of Ferroelectric (ISAF), International Symposium on Integrated Functionalities (ISIF), and Piezoelectric Force Microscopy Workshop (PFM), 2015
The phase structure, microstructure, dielectric and energy storage properties of 0.85(0.92Bi 0.5 Na 0.5 TiO 3 -0.08BaTiO 3 )-0.15(Na 1−3x Bi x NbO 3 ) (BNTBT-NB x N) polycrystalline lead-free ceramics were systematically investigated. Dense and pore-free samples were prepared by conventional solid state reaction method.
Qi Xu, Hanxing Liu, Lin Zhang, Minghe Cao, Juan Xie, Hua Hao, Zhonghua Yao   +6 more
openaire   +1 more source

Influence of hydrothermal synthesis conditions on BNT-based piezoceramics

Journal of the European Ceramic Society, 2011
Abstract The Bi 0.5 Na 0.5 TiO 3 perovskite (BNT) is a very promising lead-free candidate for piezoelectric applications. Nevertheless a low reproducibility is commonly reported for the solid state synthesized BNT. In this work, the hydrothermal synthesis was investigated to improve the BNT ceramics characteristics reproducibility.
Jean-François Trelcat, Sophie d’Astorg, Christian Courtois, Philippe Champagne, Mohamed Rguiti, Anne Leriche   +5 more
exaly   +2 more sources

Electromechanical properties of flash sintered BNT-based piezoelectric ceramic

Journal of the European Ceramic Society, 2019
Abstract Lead-free, (BiNa0.88K0.08Li0.04)0.5Ti0.995 Mn0.015 O3 piezoceramic has been successfully densified by a novel electrical current applied technique known as flash sintering (FS) at 880 °C. The effect of alternating and direct current, current density limit and holding time on the densification, crystal structure, electromechanical and ...
Elaheh Taghaddos, Harry Charalambous, Thomas Tsakalakos, Ahmed Safari   +3 more
openaire   +1 more source

Fine-grained BNT-based lead-free composite ceramics with high energy-storage density

Ceramics International, 2019
The low breakdown strength of BNT-based dielectric ceramics limits the increase in energy-storage density. In this study, we successfully reduced the sintering temperature of BNT-ST-5AN relaxor ferroelectric ceramics from 1150 to 980 °C by two-phase ...
Weigang Ma, Pengyuan Fan, D. Salamon, Suwadee Kongparakul, Chanatip Samart, Ting Zhang, Guangzu Zhang, Shenglin Jiang, J. Chang, Haibo Zhang   +9 more
semanticscholar   +1 more source

Morphotropic phase boundary in the BNT–BT–BKT system

Ceramics International, 2012
Lead-free x Bi0.5Na0.5TiO3–y BaTiO3–z Bi0.5K0.5TiO3 piezoelectric ceramics were synthesized by a conventional solid state reaction method. The microstructure, ferroelectric and piezoelectric properties of the ceramics were investigated. Structure measurements by X-ray diffraction with Rietveld refinement have allowed us to specify more precisely the ...
Trelcat, Jean-François, Courtois, Christian, Rguiti, Mohamed, Leriche, Anne, Duvigneaud, Paul-Henri, Segato, Tiriana   +5 more
openaire   +1 more source

Benchmarking BNT Inference Engines using an Early Warning System

2019 Innovations in Intelligent Systems and Applications Conference (ASYU), 2019
Bayesian Networks (BN) are systematic probabilistic reasoning models for visualization and inspection of interrelated data due to their ability to capture uncertain knowledge in an intuitive and efficient manner. They can be applied for various tasks such as decision making, reliability analysis, reasoning, etc.
Kirubel Wube AFRASSA, Ahmet Ziya BOZ, Mehmet Fatih AMASYALI, Sofiene TAHAR   +3 more
openaire   +1 more source

High room-temperature pyroelectric property in lead-free BNT-BZT ferroelectric ceramics for thermal energy harvesting

Journal of the European Ceramic Society, 2019
Pyroelectrics are attracting increasing attention because they enable pyroelectric generators to extract energy from low-gradient-temperature heat for portable electronic devices.
M. Shen, Wenru Li, Ming-yu Li, Huan Liu, Jianmei Xu, Shiyong Qiu, Guangzu Zhang, Zixiao Lu, Honglang Li, Shenglin Jiang   +9 more
semanticscholar   +1 more source

Synthesis and ferroelectric behavior of Gd doped BNT ceramics

Current Applied Physics, 2014
Abstract In the present work, polycrystalline (Bi 1− x Gd x ) 0.5 Na 0.5 TiO 3 (BGNT) ceramics with low amount of rare earth ion Gd 3+ ( x  = 0, 0.02, 0.03, 0.04) have been synthesized by a semi–wet technique. XRD patterns show single phase formation for all the samples with a rhombohedral structure at room temperature.
Vijayeta Pal, R.K. Dwivedi, O.P. Thakur
openaire   +1 more source

Improved energy storage performance of BST‒BNT ceramics via composition modification

Solid State Communications, 2023
Y.C. Hu, S. T. Dang, J. Cao, W.L. Zhang, Y. Zai, P. Xu, X.W. Wang   +6 more
semanticscholar   +1 more source

Processing and Properties of Textured BNT-Based Piezoelectrics

2011
There are two major strategies for the development of lead-free piezoelectric ceramics: compositional exploration and microstructural control. The compositional design by the formation of solid solution often improves the room temperature properties of lead-free piezoelectrics while it generally lowers Curie temperature (T C) and limits the potential ...
Toshihiko Tani, Toshio Kimura
openaire   +1 more source