Authors:Valeria Palermo, Ángel G. Sathicq, Patricia G. Vázquez, Horacio J. Thomas, and Gustavo P. Romanelli
–visible spectra of solutions in quartz cuvettes were measured at room temperature with a Perkin Elmer Lambda 35 UV–vis double beam spectrophotometer, in the range 200–1,100 nm. This spectrometer uses tungsten and deuterium lamps to provide visible and UV
Authors:Seval Koç, Nil Toplan, Kenan Yildiz, and H. Özkan Toplan
diameter of the tungsten carbide (WC) balls were 200 g and 100 mm, respectively; the grinding bowl was 250 mL WC; the grinding times were 0, 1, and 2 h; the speed of the main disk was 600 rpm; and the grinding process was dry.
The X-ray diffraction
Authors:Kelly C. Teixeira, Gabriela F. Moreira, Welber G. Quirino, Cristiano Legnani, Raigna A. Silva, Marco Cremona, Hermi F. Brito, and Carlos A. Achete
deposited by thermal evaporation in tungsten crucibles with a controlled growth rate of about 0.1–0.3 nm s −1 under high vacuum and with a base pressure around 9 × 10 −6 Torr. The photoluminescent spectra of the deposited thin films were recorded at room