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  1. No Access

    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)

  2. No Access

    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)

  3. No Access

    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)