Navegação Ciências Exatas e da Terra por Assunto "Temperatura de curie"

Resultados 1-7 de 7

    • Application of the underscreened Kondo lattice model to neptunium compounds 

      Thomas, Christopher; Simões, Acirete Souza da Rosa; Iglesias, Jose Roberto; Lacroix, Claudine; Coqblin, Bernard (2012) [Artigo de periódico]
      The coexistence of Kondo e®ect and ferromagnetic order has been observed in many uranium and neptunium compounds such as UTe or Np2PdGa3. This coexistence can be described within the underscreened Anderson lattice model ...

    • Comparison of computed amplitudes of magnetoresistance in spin-valve structures with wafer probe measurements 

      Dieny, Bernard; Pereira, Luis Gustavo; Taylor, Roger H.; Yamamoto, S.Y. (1998) [Artigo de periódico]
      A code has been developed based on the semi-classical theory of giant magnetoresistance of Camley and Barnas [l]. It computes the sheet conductance and magnetoresistance of spin-valve structures. The input parameters are ...

    • Impedance and initial magnetic permeability of the Heusler compounds Pd/sub 2/MnSn and Pd/sub 2/MnSb near the Curie temperature 

      Fraga, Gilberto Luiz Ferreira; Borba, Luciano Apellaniz; Pureur Neto, Paulo (2006) [Artigo de periódico]
      In this paper we report measurements of the complex impedance of the Heusler compounds Pd2MnSn and Pd2MnSb near the Curie temperature. From the experimental data, the complex initial magnetic permeability is obtained as a ...

    • Magnetism in dilute magnetic oxide thin films based on SnO/sub 2/ 

      Fitzgerald, C.B.; Venkatesan, M.; Dorneles, Lucio Strazzabosco; Gunning, R.; Stamenov, Plamen; Coey, John Michael Douglas; Stampe, P.A.; Kennedy, R.J.; Moreira, Eduardo Ceretta; Sias, Uilson Schwantz (2006) [Artigo de periódico]
      Thin films of SnO2 prepared by pulsed-laser deposition on R-cut sapphire substrates exhibit ferromagnetic properties at room temperature when they are doped with Cr, Mn, Fe, Co, or Ni, but not with other 3d cations. ...

    • Tailoring coercivity of unbiased exchange-coupled ferromagnet/antiferromagnet bilayers 

      Sossmeier, K.D.; Schäfer, Deise; Bastos, Arthur Paulo Ozelame; Schmidt, Joao Edgar; Geshev, Julian Penkov (2012) [Artigo de periódico]
      This paper reports experimental results obtained on unconventional exchange-coupled ferromagnet/ antiferromagnet (FM/AF) system showing zero net bias. The Curie temperature of the FM (NiCu) is lower than the blocking ...

    • Temperature dependence of the single-crystal elastic constants of co-rich co-fe alloys 

      Wazzan, A.R.; Bristoti, Anildo; Robinson, L.B.; Ahmedieh, A. (1973) [Artigo de periódico]
      The single-crystal elastic moduli, C11, C12, and C44 of three fcc cobalt-iron alloys (Co-6 at. % Fe, Co-8 at.% Fe, Co-10 at.% Fe) were measured in the range 0-315 °c. In addition C11 for the Co-6 at. % Fe alloy, and C' = ...

    • The S=1 underscreened anderson lattice model for uranium compounds 

      Thomas, Christopher; Simões, Acirete Souza da Rosa; Iglesias, Jose Roberto; Lacroix, Claudine; Perkins, Natalia B.; Coqblin, Bernard (2011) [Artigo de periódico]
      Magnetic properties of uranium and neptunium compounds showing coexistence of the Kondo e®ect and ferromagnetic order are investigated within the degenerate Anderson Lattice Hamiltonian, describing a 5f2 electronic ...