Voltage relaxation and Abrikosov-Josephson vortices in Bi-2223 superconductors doped with alpha-Al2O3 nanoparticles Abstract: We have observed a change in the behaviour of voltage-relaxation curves with remnant magnetic flux, when the maximum magnetic field applied before starting […]
Microstructural and electrical transport properties of uniaxially pressed ceramic superconductors Abstract: We have studied the effect of the pelletization pressure on microstructural and electrical transport properties of superconducting ceramics with starting composition given by the formula […]
Understanding the fundamental electrical and photoelectrochemical behavior of a hematite photoanode Abstract: Hematite is considered to be the most promising material used as a photoanode for water splitting and here we utilized a sintered hematite […]
Theoretical Study of the Stoichiometric and Reduced Ce-Doped TiO2 Anatase (001) Surfaces Abstract: The effects of Ce doping (2.6%) on the oxygen vacancy (V-O) formation energy (Et) and the electronic structure of the anatase TiO2(001) surface […]
Local electronic structure, optical bandgap and photoluminescence (PL) properties of Ba(Zr0.75Ti0.25) O-3 powders Abstract: Ba(Zr0.75Ti0.25)O3 (BZT-75/25) powders were synthesized by the polymeric precursor method. Samples were structurally characterized by X-ray diffraction (XRD), Rietveld refinement, X-ray absorption […]
Local electronic structure, optical bandgap and photoluminescence (PL) properties of Ba(Zr0.75Ti0.25) O-3 powders Abstract: Ba(Zr0.75Ti0.25)O3 (BZT-75/25) powders were synthesized by the polymeric precursor method. Samples were structurally characterized by X-ray diffraction (XRD), Rietveld refinement, X-ray absorption near-edge […]
Structural properties and self-activated photoluminescence emissions in hydroxyapatite with distinct particle shapes Abstract: The understanding on defect-related photoluminescence (PL) properties of hydroxyapatite (HA) particles has a fundamental importance in the technological field for the development of […]
Writers: Maria T. Fabbro, Lourdes Gracia, Gabriela S. Silva, Luís P.S. Santos, Juan Andrés, Eloisa Cordoncillo, E. Longo Keywords: Ag2CrO4; Order-disorder effects; Electron beam irradiation; Density-functional-theory Abstract: Ag2CrO4 microcrystals were synthesized using the co-precipitation method. These […]
Writers: L.S.R. Rocha, C.R. Foschini, C.C. Silva, E. Longo, A.Z. Simões Keywords: A. Powders; chemical preparation; B. Defects; D. ZnO; E. Sensors Abstract: Good quality ZnO nanostructures were obtained by the microwave-assisted hydrothermal synthesis, at […]
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