Navegação Ciências Exatas e da Terra por Assunto "Dominios magneticos"

Resultados 1-5 de 5

    • Evidence of spin-density-wave to spin-glass transformation in ynd alloys 

      Trovarelli, O.; Sereni, J.G.; Pureur Neto, Paulo; Schaf, Jacob (1995) [Artigo de periódico]
      Low-temperature ac and de magnetic susceptibility and specific-heat measurements have been carried out on YNd di1ute alloys, where the Nd concentrations are 1.9, 2.5, 4.5, 6.8, and 9.0 at. %. The most concentrated alloys ...

    • 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 ...

    • Incoherent magnetization rotation observed in subnanosecond time-resolving x-ray photoemission electron microscopy 

      Schneider, Claus M.; Kuksov, Andrej; Krasyuk, Alexander; Oelsner, Andreas; Neeb, Daniel; Nepijko, Sergej A.; Schönhense, Gerd; Mönch, Ingolf; Kaltofen, Rainer; Morais, Jonder; Nadaï, Celine de; Brookes, N.B. (2004) [Artigo de periódico]
      We present recent results of time-resolved x-ray photoemission electron microscopy on permalloy microstructures. The stroboscopic experiments feature a time-resolution of Dtø130 ps.We observe a strong influence of incoherent ...

    • Magnetic and structural properties of ion nitrided stainless steel 

      Basso, Rodrigo Leonardo de Oliveira; Pimentel, Vinicius do Lago; Weber, Sylvain; Marcos, Grégory; Czerwiec, Thierry; Baumvol, Israel Jacob Rabin; Figueroa, Carlos Alejandro (2009) [Artigo de periódico]
      The magnetic properties and crystalline structure of expanded austenite obtained by ion beam nitriding of AISI 316 steel are investigated. Magnetic force microscopy reveals that the nitrogen expanded austenite has two ...

    • Slicing the three-dimensional Ising model : critical equilibrium and coarsening dynamics 

      Arenzon, Jeferson Jacob; Cugliandolo, Leticia F.; Picco, Marco (2015) [Artigo de periódico]
      We study the evolution of spin clusters on two-dimensional slices of the three-dimensional Ising model in contact with a heat bath after a sudden quench to a subcritical temperature. We analyze the evolution of some simple ...