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Finding invariant tori in the problem of a periodically corrugated waveguide
(Sociedade Brasileira de Física, 2008-03-01)
Some dynamic properties for a light ray suffering specular reflections inside a periodically corrugated waveguide are studied. The dynamics of the model is described in terms of a two dimensional nonlinear area preserving ...
Compositional and structural changes at the anodic surface of thermally poled soda-lime float glass
(American Institute of Physics (AIP), 2008-09-01)
Applying high dc electric fields at elevated temperatures on silicate glasses results in displacement of ions, causing compositional and structural changes in the anodic surface. In this work, the ionic displacement was ...
Structural and morphological characterization of Pb1-xBaxTiO3 thin films prepared by chemical route: An investigation of phase transition
(Elsevier B.V. Sa, 2008-04-15)
Detailed room temperature micro-Raman scattering, X-ray diffraction, atomic force microscopy and specular reflectance infrared Fourier transform spectroscopy studies were carried out on soft chemical by processed Pb1-xBaxTiO3 ...
Structural phase evolution of strontium-doped lead titanate thin films prepared by the soft chemical technique
(2003-03-01)
Strontium-modified lead titanate thin films with composition Pb1-xSrxTiO3 were grown on Pt/Ti/SiO2/Si substrates using the polymeric precursor method. The structural phase evolution as a function of the Sr contents was ...
Polymeric precursor method to the synthesis of XWO(4) (X = Ca and Sr) thin films-Structural, microstructural and spectroscopic investigations
(Elsevier B.V. Sa, 2009-05-27)
Stoichiometric XWO(4) (X = Ca, and Sr) thin films were synthesized using the polymeric precursor method. In this soft chemical method, soluble precursors such as strontium carbonate, calcium carbonate and tungstic acid, ...
Preparation, structural and optical characterization of BaWO4 and PbWO4 thin films prepared by a chemical route
(Elsevier B.V., 2003-01-01)
Polycrystalline BaWO4 and PbWO4 thin films having a tetragonal scheelite structure were prepared at different temperatures. Soluble precursors such as barium carbonate, lead acetate trihydrate and tungstic acid, as starting ...
Circular, elliptic and oval billiards in a gravitational field
(Elsevier B.V., 2015)