Results 1 to 10 of about 6,148,141 (283)

Progress in engineering high strain lead-free piezoelectric ceramics

open access: yesScience and Technology of Advanced Materials, 2010
Environmental concerns are strongly driving the need to replace the lead-based piezoelectric materials currently employed as multilayer actuators. The current review describes both compositional and structural engineering approaches to achieve enhanced ...
Serhiy O Leontsev and Richard E Eitel
doaj  

Enhanced dielectric and electrical properties of Li-doped BNBT ceramics for energy storage applications

open access: yesJournal of Saudi Chemical Society
The compound [(Bi0.5Na0.5)0.94Ba0.06]1-xLixTiO3 (BNBT-Li) 0 ≤ x ≤ 0.04), was prepared using a solid-state reaction method. In the X-ray diffraction (XRD) study, a tetragonal structure was observed for the compositions x = 0 and steadily modified to a ...
Sapna Qazi   +10 more
doaj   +1 more source

Life cycle assessment of lead‐free potassium sodium niobate versus lead zirconate titanate: Energy and environmental impacts

open access: yesEcoMat
Over the years, lead‐based piezoelectric ceramics found extensive use in vital fields such as sensors and actuators. Despite their exceptional electromechanical properties, lead‐containing materials pose severe environmental risks and foster a new era of
Yanqi Wu   +7 more
doaj   +1 more source

Influence of Nb2O5 crystal form on the structure and properties of potassium sodium niobate-based piezoelectric ceramics

open access: yesGongneng cailiao yu qijian xuebao
Utilizing solid-phase sintering technology, lead-free piezoelectric ceramics (K0.44Na0.52Li0.04)(Nb0.9Ta0.06Sb0.04)O3 with high density and superior electrical properties were successfully fabricated at temperatures ranging from 1055 to 1070 ℃.
Lin WANG   +3 more
doaj   +1 more source

Observation of large electrocaloric properties in lead-free Ba0.98Ca0.02Ti0.98Sn0.02O3 ceramics

open access: yesAIP Advances, 2019
Tetragonal lead-free Ba0.98Ca0.02Ti0.98Sn0.02O3 (BCST) compound sintered at 1400 °C was investigated for its electrocaloric properties. The large adiabatic temperature variation, ΔT ∼ 0.476 K and isothermal entropy change, ΔS ∼ 1.90 J/kg.K were obtained ...
Ramovatar   +5 more
doaj   +1 more source

Transparent electro-optic ceramics: Processing, materials, and applications

open access: yesJournal of Materiomics
Transparent electro-optic (EO) oxide ceramics are known for their rapid EO effects. EO ceramics have several advantages over single-crystals, including variable size and shape, controllable chemical composition, superior mechanical properties, and low ...
Iva Milisavljevic   +4 more
doaj   +1 more source

Microstructure, dielectric, ferroelectric and piezoelectric properties of NbO3 lead-free ceramics prepared via cold sintering with post-annealing

open access: yesJournal of Advanced Dielectrics
Via the method of cold sintering with post-annealing, the lead-free ceramics [Formula: see text][Formula: see text][Formula: see text]NbO3 were prepared.
Neng Qin   +7 more
doaj   +1 more source

Ferroelectric Polarization Dependent Piezoelectric Hardening in BiFeO3‐BaTiO3 Lead‐Free Ceramics

open access: yesAdvanced Electronic Materials
The relation between the improvement of mechanical quality factor (Qm) and internal electric field (Ei) generated during the aging process in lead‐free piezoelectric BiFeO3‐BaTiO3 ceramics is investigated for hard piezoelectric application of power ...
Myang Hwan Lee   +7 more
doaj   +1 more source

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