Search Results - "Eiras, J.A"

Optimization of parameters in the synthesis of 0.90Pb(Zn1/3Nb2/3)O3–0.10PbTiO3 (PZN-10PT) powders obtained by the mixed oxides method by Raigoza, C.F.V., Garcia, D., Eiras, J.A., Kiminami, R.H.G.A.

“…Preventing the formation of the pyrochlore phase in the synthesis of PZN-PT powders requires controlling calcination parameters such as temperature, soaking…”
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Non-linear dielectric and piezoelectric response in undoped and Nb5+ or Fe3+ doped PZT ceramic system by GARCIA, J. E, PEREZ, R, ALBAREDA, A, EIRASB, J. A

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Phase diagram of the relaxor (1−x)Pb(Zn1/3Nb2/3)O3–xPbTiO3 investigated by dielectric and Raman spectroscopies by Lima-Silva, J.J., Guedes, I., Mendes Filho, J., Ayala, A.P., Lente, M.H., Eiras, J.A., Garcia, D.

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Bandgap narrowing of Ba0.92Na0.04Bi0.04TiO3 ferroelectric ceramics by transition metals doping for photovoltaic applications by Alkathy, Mahmoud S., Lente, Manuel H., Eiras, J.A.

“…A wide bandgap is one of the greatest issues that restrain the photoelectric application of classical ferroelectric oxides in the visible spectrum. Typical…”
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Low temperature synthesis and electrical properties of PbTiO3 thin films prepared by the polymeric precursor method by Pontes, F.M, Rangel, J.H.G, Leite, E.R, Longo, E, Varela, J.A, Araújo, E.B, Eiras, J.A

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Enhanced energy-storage density of BaTi0.95Zr0.05O3 via generation of defect dipoles upon lithium-doping by Alkathy, Mahmoud S., Rahaman, Attaur, Mastelaro, Valmor R., Milton, Flavio Paulo, Zabotto, Fabio L., Lente, Manuel H., Strabello, Alexandre, Eiras, J.A.

“…Researchers seek the most optimal solutions to a worsening crisis and escalating energy demand. In light of this, ferroelectric (FE) ceramics have become…”
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Achieving high energy storage density simultaneously with large efficiency and excellent thermal stability by defect dipole, and microstructural engineering in modified-BaTiO3 ceramics by Alkathy, Mahmoud.S., Rahaman, Attaur, Mastelaro, Valmor R., Zabotto, Fabio.L., Milton, Flavio Paulo, Eiras, J.A.

“…The electric energy produced from renewable sources can assist in shifting to clean energy. An efficient energy storage system is needed to use this energy for…”
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Enhanced ferroelectric, piezoelectric, and dielectric properties in potassium sodium niobate lead-free piezoelectric ceramics by constructing of multiple phase boundaries by Rahman, Attaur, Alkathy, Mahmoud S., Habib, Muhammad, Rahman, Jamil Ur, Zabotto, Fabio L., Milton, Flavio Paulo, Strabello, Alexandre, Lee, Soonil, Eiras, J.A.

“…In this work, we report excellent ferroelectric, piezoelectric, and dielectric properties in 0.95(K0.5−x/2Na0.5−x/2Lix)NbO3-0.04BaZrO3-0.01BiFeO3,…”
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Bandgap tuning in samarium-modified bismuth titanate by site engineering using iron and cobalt co-doping for photovoltaic application by Alkathy, Mahmoud.S., Zabotto, Fabio.L., Milton, Flavio Paulo, Eiras, J.A.

“…Multiferroic materials have faced great interest for solar energy conversion applications due to the charge separation caused by the effective ferroelectric…”
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Room-temperature multiferroic behaviour in Co/Fe co-substituted layer-structured Aurivillius phase ceramics by Alkathy, Mahmoud S., Rahman, Attaur, Zabotto, Fabio L., Milton, Flavio Paulo, Raju, K.C. James, Eiras, J.A.

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Effect of defects on the band gap and photoluminescence emission of Bi and Li co-substituted barium strontium titanate ceramics by Alkathy, Mahmoud S., Zabotto, Fabio L., Raju, K.C. James, Eiras, J.A.

“…Since the discovery of an effective role for defects in improving the performance of ceramic materials in practical application, investigation of defects and…”
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A phenomenological model for the magnetodielectric effect in magnetoelectric composites by Carvalho, R.A.R., Bonini, R.P., Barbosa, V.M.F., Botero, E.R., Alkathy, Mahmoud S., Eiras, J.A., Zabotto, F.L.

“…•Room temperature magnetodielectric coupling in magnetoelectric systems are reported.•The phenomenological Model for the Magnetodielectric Effect in…”
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Densificación de cerámicas de PZN-10PT a partir de polvos sintetizados por el método de reacción por combustión by Raigoza, C.F.V, Eiras, J.A, Kiminami, Ruth H.G.A, Garcia, D

“…Monocristales de ( (1 - x)Pb(Zn1=3Nb2=3)O3-xPbTiO3-PZN-xPT ) con estructura perovskita, muestran excelentes propiedades dieléctricas, ópticas y…”
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Geometrical Polarization Approach method applied to A(B’B″)O3 complex perovskites by Freitas, V.F., Eiras, J.A., Cótica, L.F., Santos, I.A.

“…The geometric polarization approach (GPA) method is proposed to obtain the intrinsic polarization of polar dielectrics with complex A(B’B″)O3 perovskite…”
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Magnetodielectric and magnetoelectric correlation in (1-x)PMN-PT/xCFO 0–3 particulate composites by Zabotto, F.L., Milton, F.P., Gualdi, A.J., de Oliveira, A.J.A., Eiras, J.A., Garcia, D.

“…In this work, the relationship between dielectric, ferroelectric, piezoelectric properties and the magnetoelectric coupling in (1-x)PMN-PT/xCFO multiferroic…”
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Geometrical polarization approach: A semi-empirical tool to estimate the intrinsic polarization of polar dielectrics by Freitas, V.F., Eiras, J.A., Cótica, L.F., Santos, I.A.

“…A geometrical polarization approach (GPA), where the average unit cell polarization (direction and magnitude) is obtained from diffraction-based results, is…”
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Preparation of PZT, PLZT and Bi4Ti3O12 thin films from oxide precursors by ARAUJO, E. B, EIRAS, J. A

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Transição de Fase Difusa e Propriedades Dielétricas de Cerâmicas Ferroelétricas de (Pb, Ba)Nb2O6 by Santos, I.A., Arantes, V.L., Garcia, D., Eiras, J.A.

“…Tungsten bonze structured lead barium niobate (Pb1-xBa xNb2O6) ferroelectric ceramics were prepared by the conventional mixed oxide method and their dielectric…”
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Ferroelectric thin films using oxides as raw materials by Araújo, E.B., Eiras, J.A.

“…This work describes an alternative method for the preparation of ferroelectric thin films based on pre-calcination of oxides, to be used as precursor material…”
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Local structure and hybridization states in Ba0.9Ca0.1Ti1−Zr O3 ceramic compounds: Correlation with a normal or relaxor ferroelectric character by Mastelaro, V.R., Favarim, H.R., Mesquita, A., Michalowicz, A., Moscovici, J., Eiras, J.A.

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