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Análise da deformação através de mapas de catodoluminescência e do geotermômetro Ti no quartzo no Granito Capote, no Cinturão Ribeira
(Universidade Estadual Paulista (Unesp), 2022-03-08)
Quartz is one of the most abundant minerals in the Earth's crust, however, its
composition of almost 100% Si has always resulted in few geochemical studies on it. The
advancement of trace element analysis techniques ...
Structural and electrical characterization of semiconducting barium-lead-titanate ceramics
(Gordon Breach Sci Publ Ltd, 2001-01-01)
BaTiO3 is usually doped to achieve the temperature stability required by device applications, as well as to obtain a large positive temperature coefficient anomaly of resistivity (PTCR). Uniform distribution of dopants ...
Structural and electrical characterization of semiconducting barium-lead-titanate ceramics
(Gordon Breach Sci Publ Ltd, 2001-01-01)
BaTiO3 is usually doped to achieve the temperature stability required by device applications, as well as to obtain a large positive temperature coefficient anomaly of resistivity (PTCR). Uniform distribution of dopants ...
Enhanced photocatalytic activity of mesoporous SiO2/TiO2 sol–gel coatings doped with Ag nanoparticles
(Springer, 2015-06-16)
In the present study, as-prepared silver nanoparticles have been incorporated into SiO2 and TiO2 sols. The characterisation of the silver nanoparticles was performed through transmission electron microscopy, grazing X-ray ...
Crecimiento de peliculas delgadas de baxsr1-xtio3 y sus aplicaciones en memorias funcionales
(03/05/2012)
ABSTRACT:In this work, BaxSr1−xTiO3 thin films on nichrome, quartz and Pt/TiO2/SiO2/Si substrates were deposited by RF co-sputtering using thermal annealing in-situ. The co-sputtering was done using two magnetrons with a ...
Synthesis and characterization of mesoporous H4SiW12O40/TiO2 composites
(Nova Science Publishers, 2009)
Mesoporous H4SiW12O40 /TiO2 composites were successfully synthesized by sol-gel reactions using urea as a low-cost template, and adding tungstosilicic acid (TSA) at the same time as the template. The prepared materials ...
Estudio comparativo de la incorporación de nanopartículas de Ag a recubrimientos de TiO2 por las técnicas de dopado e impregnaciónComparative study of Ag nanoparticles incorporation in TiO2 coatings by doping and impregnation techniques
(Asociación Física Argentina, 2013-10)
En el presente estudio se incorporan nanopartículas de Ag sintetizadas mediante un proceso coloidal a recubrimientos de SiO2 y TiO2 mediante el dopado de los precursores sol-gel. En otra técnica, los recubrimientos de SiO2 ...