Browsing by Author "Carara, Marcos Andre"

Now showing items 1-8 of 8

    • 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) [Journal article]
      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 ...

    • Dinâmica de paredes de domínios magnéticos : um estudo através da impedanciometria 

      Carara, Marcos Andre (2001) [Thesis]
      Neste trabalho é apresentado um estudo sobre a dinâmica de paredes de domínios através de medidas de impedanciometria. É proposto um método que permite a obtenção dos seguintes parâmetros das amostras estudadas: mobilidade ...

    • Magnetization dynamics as derived from magneto impedance measurements 

      Carara, Marcos Andre; Baibich, Mario Norberto; Sommer, Rubem Luis (2000) [Journal article]
      In this work, the magnetization dynamics of soft magnetic materials is studied with the aid of transverse differential permeability μ(Iac , f ,Hdc) spectra. Contributions to the magnetization processes from domain wall ...

    • Magnetization process and magnetoimpedance in (110)[001]FeSi/Sub 3% 

      Carara, Marcos Andre; Gundel, Andre; Baibich, Mario Norberto; Sommer, Rubem Luis (1998) [Journal article]
      The present article investigates the relation between magnetoimpedance (MI) and the evolution of the magnetic domain structure along the magnetization curves of commercial FeSi3% sheets cut at different angles with respect ...

    • Stress level in finemet materials studied by impedanciometry 

      Carara, Marcos Andre; Baibich, Mario Norberto; Sommer, Rubem Luis (2002) [Journal article]
      In this work, a study of the stress relief in Finemet ribbons, Fe73.5Cu1Nb3Si16.5B6, as a function of the annealing temperature is presented. The as melt-spun samples are amorphous and become partially crystallized after ...

    • 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) [Journal article]
      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 ...

    • Study of CoFeSiB glass-covered amorphous microwires under applied stress 

      Carara, Marcos Andre; Sossmeier, K.D.; Viegas, Alexandre da Cas; Geshev, Julian Penkov; Chiriac, H.; Sommer, Rubem Luis (2005) [Journal article]
      Magnetoimpedance-based ferromagnetic resonance (FMR) studies of annealed Co68.15Fe4.35Si12.5B15 glass-covered amorphous microwires under stress are reported. The applied stress modifies the anisotropy and the domain structure ...

    • A técnica de magnetometria de torque e seus resultados 

      Rigue, Josué Neroti; Chrischon, Dieivase da Silva; Bohn, Felipe; Kirch, Alexsandro (2008) [Abstract published in event]