Browsing Teses e dissertações by Subject "Ordem-desordem estrutural"

Now showing items 1-4 of 4

    • Titanatos de alcalinos terrosos : a ordem associada à desordem 

      Moreira, Mário Lúcio (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 26/02/2010)
      The microwave-assisted hydrothermal method was implemented in the synthesis of alkaline earth titanates under ABO3 stoichiometric known as perovskites, being efficient and innovative. For that, OH- groups played an important ...

    • Ordem-desordem: uma avaliação estrutural do Ba(ZrxTi1-x)O3 

      Cavalcante, Laécio Santos (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 07/08/2009)
      This work have as aim, the synthesis of ceramic powders of Ba(ZrxTi1¡x)O3 (x = 0, 0.25, 0.50, 0.75 and 1) by the polymeric precursor method and investigate the degree of structural order-disorder of these systems by different ...

    • Propriedades fotoluminescentes do CuMoO4 

      Santos, Valdemir dos (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 19/12/2011)
      In this study, CuMoO4 were synthesized, characterized and crystallized into powders in two structures: monoclinic and triclinic. CuMoO4 powder were synthesized by precipitation, and the reaction s pH were controlled due ...

    • Influência da ordem-desordem estrutural na fotoluminescência do CaTiO3:Sm 

      Figueiredo, Alberthmeiry Teixeira de (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 08/03/2007)
      Some properties of the materials, such as ferroelectric and optic, are dependents to structural organization of the material. Thus, to know the order disorder degree at short, intermediate and long range is important to ...