A5085588955- Physics of Superconductivity and Magnetism
- Glass properties and applications
- Aerogels and thermal insulation
- Superconducting Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Superconductivity in MgB2 and Alloys
- Magnetic and transport properties of perovskites and related materials
- Pigment Synthesis and Properties
- Mesoporous Materials and Catalysis
- Transition Metal Oxide Nanomaterials
- Iron oxide chemistry and applications
- Metallurgical Processes and Thermodynamics
- Advancements in Solid Oxide Fuel Cells
- Advanced Photocatalysis Techniques
- Metallurgical and Alloy Processes
- ZnO doping and properties
- Hydrogen Storage and Materials
- Graphite, nuclear technology, radiation studies
- Advanced Condensed Matter Physics
- TiO2 Photocatalysis and Solar Cells
- Magnetic Properties and Applications
- Adsorption, diffusion, and thermodynamic properties of materials
- Recycling and utilization of industrial and municipal waste in materials production
- Education and Digital Technologies
- Nuclear materials and radiation effects
Universidade Estadual Paulista (Unesp)
2009-2023
Serviço Nacional de Aprendizagem Industrial
2015
University of Wollongong
2006-2013
Universidade de São Paulo
1985-2012
Argonne National Laboratory
1988-1989
Universidade Federal de São Carlos
1986-1988
Brazilian Synchrotron Light Laboratory
1987
The effect of the properties starting boron powders on superconducting MgB2 has been studied. 92% and 96% pure produce lower surface reactivity larger particle size than 99% powder, as can be seen from Brunauer–Emmett–Teller (BET) scanning electron microscopy (SEM) results, indicating that low purity cannot used to archive same those samples made powder. However, improved by using a simple chemical process, leading enhanced magnetic critical current densities Jc. From x-ray diffraction (XRD)...
An investigation was conducted of the RF properties high-T/sub c/ superconductors over a wide range temperatures, frequencies and field amplitudes. Both bulk polycrystalline samples thick films on silver substrates were tested. At 150 MHz 4.2 K, surface resistances 18 mu Omega at low 3.6 m an 270 G measured. All showed strong dependence resistance field. However, no breakdown superconducting state observed up to highest achieved (320 G).< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Tin glycolate particles were prepared by a simple, one-step, polyol-mediated synthesis in air which tin oxalate precursor was added to ethylene glycol and heated at reflux. Hexagonal-shaped, micron-sized formed when the solution had cooled. A series of oxides produced calcination synthesized 600-800 degrees C. It revealed that micron-sized, hexagonal-shaped now consisted nanosized tin-based (80-120 nm), encapsulated within shell. XRD, TGA, FT-IR measurements conducted account for...
Abstract 300 M steel was developed from high-strength SAE 4340, the goal of this improvement get better toughness and weldability in applications requiring improved mechanical properties; with small changes alloy elements, addition vanadium especially silicon content. This work uses low-power laser CO 2 (125 W) for introducing carbon into surface bainitic structure. The microstructure obtained by isothermal cooling at 300 °C 60 minutes after austenitizing 850 °C 30 minutes; heat treatment...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <formula formulatype="inline"><tex>${\rm MgB}_{2}$</tex></formula> samples were prepared using as-supplied commercial 96% boron with strong crystalline phase and the same (B) after ball milling. The effects of properties starting B powder on superconductivity evaluated. We observed that ball-milled B, in comparison one made from characterized by small grain size, broadened full width at half...
RESUMO Compósitos formados de óxidos semicondutores têm sido sintetizados e testados quanto às suas propriedades aplicações, também, como fotocatalisador restauração aquíferos por meio da degradação ou descoramento corantes orgânicos. Foi preparado o nanocompósito Fe2O3-SnO2 pelo método Poliol, técnica não encontrada para este compósito até momento na literatura, em refluxo etilenoglicol. O os isolados foram mesmo processo, caracterizados avaliados fotocatalisadores Rodamina-B solução aquosa...