Listar por autoría "f6eb5dfd-98e8-41dd-a254-491f9350eeda"
Mostrando ítems 1-3 de 3
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Electronic structure and magnetic properties of FeWO4 nanocrystals synthesized by the microwave-hydrothermal method
Cavalcante, Laécio Santos; Morilla-Santos, C.; Lisboa Filho, Paulo N.; Beltran, Armando; Andres, Juan; Gracia, Lourdes; Longo, Elson; Almeida, M.A.P. Elsevier (2012)This communication reports that FeWO4 nanocrystals were successfully synthesized by the microwave-hydrothermal method at 443 K for 1 h. The structure and shape of these nanocrystals were characterized by X-ray diffraction, ... -
Enhancement of optical absorption by modulation of the oxygen flow of TiO2 films deposited by reactive sputtering
Beltran, Armando; Pereira, André L. J.; Lisboa Filho, Paulo N.; Acuña, Javier; Brandt, Iuri S.; Pasa, André A. American Institute of Physics (AIP) (2012)Oxygen-deficient TiO2 films with enhanced visible and near-infrared optical absorption have been deposited by reactive sputtering using a planar diode radio frequency magnetron configuration. It is observed that the increase ... -
Structural and Electronic Effects of Incorporating Mn in TiO2 Films Grown by Sputtering: Anatase versus Rutile
Pereira, André L. J.; Gracia, Lourdes; Beltran, Armando; Lisboa Filho, Paulo N.; Da Silva, José H. D.; Andres, Juan American Chemical Society (2012)Pure and Mn-doped TiO 2 films have been deposited by sputtering technique onto SiO 2 substrates. The films display a compact columnar morphology, as revealed by scanning electron microscopy. X-ray diffraction and Raman ...