Navegação Ciências Exatas e da Terra por Autor "Schelp, Luiz Fernando"

Resultados 1-5 de 5

    • Co/ag multilayer film : role of annealing on the magnetic properties 

      Schelp, Luiz Fernando; Tosin, Giancarlo; Carara, Marcos Andre; Baibich, Mario Norberto; Gomes, Affonso Augusto Guidão; Schmidt, Joao Edgar (1992) [Artigo de periódico]
      Co( 15 A)/Ag(60 A) multilayers produced by electron beam deposition on a 50 A chromium buffer layer over a Si( 111) wafer have been studied by magnetoresistance, saturation magnetization, coercivity, and anisotropy. Annealing ...

    • Correlation between giant magnetoresistence and magnetic interactions in a Co/Ag multilayed/granular system 

      Viegas, Alexandre da Cas; Geshev, Julian Penkov; Schelp, Luiz Fernando; Schmidt, Joao Edgar (1997) [Artigo de periódico]
      Magnetizing, demagnetizing, and remanent magnetization curves for [Co (12 Å)/Ag(60 Å)]x15 multilayered/granular films thermally treated have been measured. The changes of the giant magnetoresistance and the interaction ...

    • Low potential barrier height effects in magnetic tunneling junctions 

      Cruz de Gracia, Evgeni Svenk; Dorneles, Lucio Strazzabosco; Schelp, Luiz Fernando; Teixeira, Sergio Ribeiro; Baibich, Mario Norberto (2007) [Artigo de periódico]
      This paper reports on the study of deposited (Ni81Fe19/AlOx /Co) magnetic tunnel junctions by magnetron sputtering, with the insulating layer obtained by plasma oxidation of Al. Concentration of the tunnel current in small ...

    • Magnetostriction in ar/sup +/ implanted and annealed co/pd multilayers 

      Viegas, Alexandre da Cas; Schelp, Luiz Fernando; Schmidt, Joao Edgar (1995) [Artigo de periódico]
      Magnetostriction curves with (111) textured polycrystalline Co/Pd multilayers, as deposited or submitted to ArS ion implantation or thermal annealing, are presented and discussed. Both treatments, while promoting intermixing ...

    • Structural and magnetic behavior of ar+-implanted co/pd multilayers : interfacial mixing 

      Schelp, Luiz Fernando; Carara, Marcos Andre; Viegas, Alexandre da Cas; Vasconcellos, Marcos Antonio Zen; Schmidt, Joao Edgar (1994) [Artigo de periódico]
      The magnetization behavior of Co/Pd multilayers has been analyzed as a function of the degree of interfacial mixing among the Co and Pd layers. Controlled atomic mixing was induced by low-dose and low-flux ion implantation ...