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    Article

    Photo-quenched luminescence in Co(II)-doped sol–gel zirconia

    The quenching process of the laser-induced luminescence of Co(II)-doped zirconia samples prepared by the sol–gel method is reported. Zirconia monoliths doped with Co(II) at different concentrations, were laser...

    R. Rodríguez, S. Jiménez-Sandoval, M. Estevez in Journal of Sol-Gel Science and Technology (2007)

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    Article

    Fractal Characterization of Silica Sol Prepared by the Sol-Gel Method: From the Sol Formation to the Flocculation Process

    The fractal characterization of silica particles prepared by the sol-gel method was obtained; from the beginning of the sol-gel synthesis to the aggregation process of these particles by adding metal ions in s...

    R. Rodríguez, G. Rojas, M. Estevez, S. Vargas in Journal of Sol-Gel Science and Technology (2002)

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    Article

    Crystalline Structure Determination of Anisotropic Dimethyl Terephthalate Crystallites by Micro-Raman Spectroscopy

    A novel approach to determine the molecular orientation of dimethyl terephthalate molecules with respect to the direction of the crystal axis is reported. This determination was achieved by changing the crysta...

    R. Rodrĺguez, S. Pacheco, S. Vargas, S. Jiménez in Journal of Materials Research (2000)

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    Article

    Effects of cationic dopants on the phase transition temperature of titania prepared by the sol-gel method

    The effect of different cations in the anatase–rutile phase transition temperatures for titania prepared by the sol-gel method was studied. The metal dopants were chosen from different periods and groups of th...

    S. Vargas, R. Arroyo, E. Haro, R. Rodríguez in Journal of Materials Research (1999)

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    Article

    Modification of the phase transition temperatures in titania doped with various cations

    Titania matrices prepared by a sol-gel technique were doped with several cations (La, Zn, Al, K, Na, Ca, Ba, and Co). The effect of the dopants on the thermal and structural properties of the materials is anal...

    R. Rodríguez-Talavera, S. Vargas, R. Arroyo-Murillo in Journal of Materials Research (1997)