Listar Ciencias Exactas y Naturales por tema "Estrutura fina estendida de absorção de raios x (EXAFS)"

Mostrando ítems 1-7 de 7

    • Electronic and crystallographic structure, hard x-ray photoemission, and mechanical and transport properties of the half-metallic Heusler compound Co2MnGe 

      Ouardi, Siham; Fecher, Gerhard H.; Balke, Benjamin; Beleanu, Andreea; Kozina, Xeniya; Stryganyuk, Gregory; Felser, Claudia; Klöß, Werner; Schrader, Hartmut; Bernardi, Fabiano; Morais, Jonder; Ikenaga, Eiji; Yamashita, Yoshiyuki; Ueda, Shigenori; Kobayashi, Keisuke (2011) [Artículo de periódico]
      This work reports on the electronic and crystalline structure and the mechanical, magnetic, and transport properties of the polycrystalline Heusler compound Co2MnGe. The crystalline structure was examined in detail by ...

    • Enhanced interface perpendicular magnetic anisotropy in electrodeposited Co/Au(111) layers 

      Cagnon, Laurent; Devolder, Thibaut; Cortes, Robert; Morrone, Angelo Ribeiro; Schmidt, Joao Edgar; Chappert, C.; Allongue, Philippe (2001) [Artículo de periódico]
      This work investigates the structure and interface perpendicular magnetic anisotropy (PMA) of electrodeposited Cu/Co/Au(111) sandwiches with variable Co thickness [2–20 monolayers (ML’s)]. In optimum deposition conditions, ...

    • Investigation of indirect structural and chemical parameters of GeSi nanoparticles in a silica matrix by combined synchrotron radiation techniques 

      Gasperini, A. A. M.; Malachias, A.; Fabbris, Gilberto Fernandes Lopes; Kellermann, Guinter; Gobbi, Angelo Luiz; Avendaño Soto, E.; Azevedo, Gustavo de Medeiros (2012) [Artículo de periódico]
      The formation of GeSi nanoparticles on an SiO2 matrix is studied here by synchrotron-based techniques. The shape, average diameter and size dispersion were obtained from grazing-incidence small-angle X-ray scattering data. ...

    • Lift-off protocols for thin films for use in EXAFS experiments 

      Decoster, S.; Glover, C. J.; Johannessen, B.; Giulian, Raquel; Sprouster, David J.; Kluth, Patrick; Araújo, Leandro Langie; Hussain, Zohair S.; Schnohr, Claudia S.; Salama, H.; Kremer, Felipe; Temst, Kristiaan; Vantomme, A.; Ridgway, M.C. (2013) [Artículo de periódico]
      Lift-off protocols for thin films for improved extended X-ray absorption fine structure (EXAFS) measurements are presented. Using wet chemical etching of the substrate or the interlayer between the thin film and the ...

    • Pressure and chemical substitution effects in the local atomic structure of BaFe2As2 

      Granado, E.; Ferreira, Leticie Mendonca; Garcia, Flávio; Azevedo, Gustavo de Medeiros; Fabbris, Gilberto Fernandes Lopes; Bittar, Eduardo Matzenbacher; Adriano, C.; Garitezi, T. M.; Rosa, P. F. S.; Bufaiçal, L. F.; Avila, M. A.; Terashita, H.; Pagliuso, P. G. (2011) [Artículo de periódico]
      The effects of K and Co substitutions and quasihydrostatic applied pressure (P < 9 GPa) in the local atomic structure of BaFe2As2, Ba(Fe0.937Co0.063)2As2 and Ba0.85K0.15Fe2As2 superconductors were investigated by extended ...

    • Structural and spectroscopic investigation of the charge-ordered, short-range ordered, and disordered phases of the Co3O2BO3 ludwigite 

      Galdino, Carlos William; Freitas, Daniele; Medrano, Cynthia Paola Contreras; Sánchez, D. R.; Souza, Rodolfo Tartaglia; Rabello, L. P.; Mendonça, Alberto Aguiar; Ghivelder, Luis; Continentino, Mucio Amado; Zapata, Maximiliano Jesús Moreno; Pinheiro, Carlos Basílio; Azevedo, Gustavo de Medeiros; Rodríguez-Velamazán, J. A.; Garbarino, Gaston; Núñez-Regueiro, M.D.; Granado, E. (2021) [Artículo de periódico]
      Charge ordering is prone to occur in crystalline materials with mixed-valence ions. It is presumably accompanied by a structural phase transition, with possible exceptions in compounds that already present more than one ...

    • Structural modifications in FexCo1-x/Cu multilayers induced by ion irradiation 

      Graff, Ismael Leandro; Teixeira, Sergio Ribeiro; Amaral, Livio; Alves, Maria do Carmo Martins; Flores, Wladimir Hernandez (2004) [Artículo de periódico]
      The structural evolution of Fe30Co70 /Cu multilayers under ion irradiation is investigated in detail using x-ray techniques. The samples were irradiated with two different ions, 50 keV of He+ and 600 keV of Kr+, at room ...