Navegação Ciências Exatas e da Terra por Autor "Tolentino, Hélio Cesar Nogueira"

Resultados 1-2 de 2

    • Structural changes of fe precipitates in annealed fe-al/sub 2/o/sub 3/ films 

      Alves, Maria do Carmo Martins; Tolentino, Hélio Cesar Nogueira; Teixeira, Sergio Ribeiro; Flores, Wladimir Hernandez; Boff, Marco Aurelio Silveira; Casarin, Fabricio de Oliveira; Schmidt, Joao Edgar (1999) [Artigo de periódico]
      We report on the structural changes of Fe-AI203 films deposited - both co-evaporated and multilayered samples - at room temperature and subsequently annealed at 400"C during 5h. Our results suggest that the Fe precipitates ...

    • X-ray-absorption spectroscopy and x-ray diffraction in discontinuous Co/sub x/Fe/sub 1-x//Ag multilayers 

      Flores, Wladimir Hernandez; Teixeira, Sergio Ribeiro; Cunha, Joao Batista Marimon da; Alves, Maria do Carmo Martins; Tolentino, Hélio Cesar Nogueira; Traverse, Agnes (2000) [Artigo de periódico]
      This paper reports on the structural properties of CoxFe12x /Ag discontinuous multilayers with x 50, 0.3, 0.7, and 1. The evolution of the structural properties has been investigated by x-ray diffraction and x-ray-absorption ...