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Phase structure and piezoelectric properties of Ca- and Ba-doped K1/2Na1/2NbO3 lead-free ceramics
(Elsevier, 2012-10-23)
Piezoelectric lead-free ceramics, K1/2Na1/2NbO3 (KNN) modified with alkaline-earth (AE) Ca2+ and Ba2+, have been prepared by a conventional solid-state sintering technique. The effect of doping level on sinterability and ...
Influence of the sintering temperature on ferroelectric properties of potassium-sodium niobate piezoelectric ceramics
(2021-01-01)
The effect of sintering condition on structure, microstructure, and ferroelectric properties of (K0.44Na0.52Li0.04) (Nb0.86Ta0.10Sb0.04)- O3 (KNL-NTS) has been investigated. Ceramic powders have been synthesized by the ...
Dielectric and piezoelectric properties of BiFeO3 from molecular dynamics simulations
(Pergamon-Elsevier Science Ltd, 2015-06)
A first-principles based atomistic scheme is used to investigate the dielectric and piezoelectric properties of BiFeO3. The atomistic model fitted from first-principles calculations reproduces very well the structural and ...
Calcium doped BiFeO3 films: Rietveld analysis and piezoelectric properties
(2018-01-01)
Pure and calcium modified CaxBi(1−x)FeO3 (x = 0.0, 0.1, 0.2, 0.30) thin films were fabricated on Pt(111)/Ti/SiO2/Si substrates by the soft chemical method. The crystal structure and physical properties of polycrystalline ...
Effective Properties Evaluation for Smart Composite Materials
(ABCM BRAZILIAN SOC MECHANICAL SCIENCES & ENGINEERINGRIO DE JANEIRO RJ, 2012)
The purpose of this article is to present a method which consists in the development of unit cell numerical models for smart composite materials with piezoelectric fibers made of PZT embedded in a non-piezoelectric matrix ...
Análise numérica e experimental de estruturas utilizando pastilhas piezoelétricas
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilEngenharia MecânicaUTFPR, 2016-06-08)
This work proposes the study of a piezoelectric material attached to a metallic plate as both sensor and actuator. The piezoelectric material used is the lead zieconate titanate, known as PZT. To accomplish this study, ...
An insight into the theoretical investigation of possible piezoelectric effect in samarium titanate (SmTiO3)
(Elsevier B.V., 2009-02-01)
The perovskite structure is the most important piezoelectric crystalline structure. In this paper, the Douglas-Kroll-Hess second-order scalar relativistic method is applied for investigation of the possible piezoelectricity ...
An insight into the theoretical investigation of possible piezoelectric effect in samarium titanate (SmTiO3)
(Elsevier B.V., 2009-02-01)
The perovskite structure is the most important piezoelectric crystalline structure. In this paper, the Douglas-Kroll-Hess second-order scalar relativistic method is applied for investigation of the possible piezoelectricity ...
Exploring new methodologies for the identification of the morphotropic phase boundary region in the (BiNa)TiO3-BaTiO3 lead free piezoceramics: Confocal Raman Microscopy
(Elsevier Science Sa, 2018-03-28)
On ferroelectrics materials, the piezoelectric activity is enhanced near the so-called morphotropic phase boundary (MPB) separating the rhombohedral and tetragonal phases in the binary phase diagram. Here, we report the ...