Results 71 to 80 of about 5,274,609 (184)

Morphotropic Phase Boundary (MPB) Induced Enhancement of Ferroelectric and Piezoelectric Properties in Li and Ta modified K0.5Na0.5NbO3

Lead-free (K0.48Na0.48Li0.04)(Nb1-xTax)O3 (KNLNT-x) ceramics were synthesized to study the effects of Li and Ta substitution on phase transition behavior, microstructure, and ferroelectric, dielectric, and piezoelectric properties. X-ray diffraction and Raman spectroscopy show that compositions with x < 0.10 exhibit a single orthorhombic (Amm2 ...
Sahoo, Satyaranjan, Pradhan, Dhiren K., Kumari, Shalini, Sahu, Abhisikta, Samantaray, Koyal Suman, Thakur, Vikas N., Mishra, Anupam, Rahaman, M. M., Kumar, Ashok, Thomas, Reji, Rack, Philip D., Pradhan, Dillip K.   +11 more
openaire   +2 more sources

Supercritical CO2‐Dried PVA/PBI Hybrid Tribo‐/Piezoelectric Energy‐Harvesting Aerogels Incorporating Lead‐Free BCZT and ZnO

Polymers for Advanced Technologies, Volume 37, Issue 9, September 2026.
ABSTRACT Mechanical‐energy harvesters that retain performance under thermal and humid stress remain scarce, yet they are essential for self‐powered electronics in demanding environments. Here we report lead‐free tribo‐/piezoaerogels built from poly(vinyl alcohol) (PVA) and thermally robust polybenzimidazole (PBI), reinforced with the piezoceramic ...
Ümmügülsüm Satır, Kamil Oflaz, Gülnihal Kara, Dilek Uzer, Çisem Kırbıyık Kurukavak, Mehmet Emin Argun, Fatma Bayram, İlkay Özaytekin   +7 more
wiley   +1 more source

Beyond Single‐Active Sites: The Emergence of High‐Entropy Perovskites in Energy and Environment Catalysis

ChemSusChem, Volume 19, Issue 13, 14 July 2026.
This review examines high‐entropy perovskites (HEPs) as a promising catalyst platform for energy and environmental applications. The focus is on configurational entropy engineering, design and synthesis, and computational understanding. These materials possess tunable active sites, enhanced stability, and improved electronic interactions, leading to ...
K. Aravinthkumar, Pei‐Ying Lin, Shu‐Ling Hsieh, Shuchen Hsieh   +3 more
wiley   +1 more source

Composition design of PMN-PH-PT piezoelectric ceramics for high-temperature actuator applications

Materials Research Express, 2020
High-Curie temperature (T _m ) piezoelectric ceramics 0.15Pb(Mg _1/3 Nb _2/3 )O _3 -xPbHfO _3 -(0.85-x)PbTiO _3 (0.15PMN-xPH-(0.85-x)PT, x = 0.36, 0.38, 0.39, 0.40, 0.42, 0.15PMN-PH-PT) were synthesized by the solid-state reaction method via the ...
Rongfeng Zhu, Bijun Fang, Shuai Zhang, Xiaolong Lu, Jianning Ding   +4 more
doaj   +1 more source

Tuning the electrocaloric enhancement near the morphotropic phase boundary in lead-free ceramics [PDF]

, 2016
The need for more energy-efficient and environmentally-friendly alternatives in the refrigeration industry to meet Global emission targets has driven efforts towards materials with a potential for solid state cooling.
Dunn, Steve, Dunn, S, McKinnon, R, Yan, H, Mckinnon, Ruth, Yan, Haixue, Alford, N, Berenov, Andrey, Alford, Neil Mcn., Alford, Neil M.c.N., Le Goupil, F, Viola, Giuseppe, Koval, V, Alford, NM, Koval, Vladimir, Viola, G, Le Goupil, Florian, Berenov, A   +17 more
core   +1 more source

New high temperature morphotropic phase boundary piezoelectrics based on Bi(Me)O3-PbTiO3 ceramics

, 2022
S.5999-6002New morphotropic phase boundary (MPB) piezoelectrics, with ferroelectric phase transition (T-c) exceeding that of PbZrO3-PbTiO3 (PZT), were investigated.
Park, S.E., Shrout, T.R., Randall, C.A., Eitel, R.E., Hackenberger, W., Rehrig, P.W.   +5 more
core   +1 more source

Investigation of complex phase transitions of relaxor ferroelectric PMN–28PT under combined electric field and temperature stimuli

Journal of Advanced Dielectrics
Relaxor ferroelectrics are an important class of functional materials because of their highly tunable dielectric permittivity, excellent temperature stability and low coercive field.
Long Cheng, Nicolas Guiblin, Oana Condurache, Brahim Dkhil, Minghai Yao, Ran Xu   +5 more
doaj   +1 more source

Beyond Entropy Engineering: Reconfiguring the Energy Landscape of Dielectrics via Interfacial and Topological Design

Rare Metals, Volume 45, Issue 11, November 2026.
Jian Wang, Yifei Zhang
wiley   +1 more source

Enhancement of Dielectric Breakdown Strength and Recoverable Energy Density in Three‐Dimensional Heterointerfaces on BaTiO3–PbZrO3–PbTiO3 Films via Room‐Temperature Nano‐Clustering

Advanced Functional Materials, Volume 36, Issue 51, 25 June 2026.
A room‐temperature aerosol deposition process yields multiphase nano‐clustered dielectric capacitors containing discrete BaTiO3, PbZrO3, and PbTiO3 crystals. This architecture creates three‐dimensional heterointerfaces that induce interfacial charge trapping and effectively inhibit breakdown propagation.
Hyunseok Song, Ke Xu, Donggeon Baek, Dayeong Hur, Minjae Kim, Hyun‐Cheol Song, Dae‐Yong Jeong, Houbing Huang, Jungho Ryu   +8 more
wiley   +1 more source

Simultaneous changes of nuclear and magnetic structures across the morphotropic phase boundary in (1−x)BiFeO3−xPbTiO3

, 2010
We present here the results of a powder neutron diffraction study on the (1-x)BiFeO3-xPbTiO3 (BF-xPT) system, which reveal an abrupt change in magnetic structure from a noncollinear antiferromagnetic one to a collinear G-type antiferromagnetic as the ...
P. S. R. Krishna, Krishna, P. S. R., H. Fuess, Dhananjai Pandey, Anatoliy Senyshyn, Senyshyn, Anatoliy, Bhattacharjee, Shuvrajyoti, Shuvrajyoti Bhattacharjee, Fuess, H., Pandey, Dhananjai   +9 more
core   +1 more source