Magnetic properties of Co-Cu nanoparticles dispersed in silica matrix (Articolo in rivista)

Type
Label
  • Magnetic properties of Co-Cu nanoparticles dispersed in silica matrix (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jmmm.2004.11.178 (literal)
Alternative label
  • C. de Julian Fernandez, G. Mattei, C. Maurizio, E. Cattaruzza, S. PadovaniG. Battaglin, F. Gonella, F. D'Acapito, P. Mazzoldi (2005)
    Magnetic properties of Co-Cu nanoparticles dispersed in silica matrix
    in Journal of magnetism and magnetic materials
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C. de Julian Fernandez, G. Mattei, C. Maurizio, E. Cattaruzza, S. PadovaniG. Battaglin, F. Gonella, F. D'Acapito, P. Mazzoldi (literal)
Pagina inizio
  • 187 (literal)
Pagina fine
  • 190 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 290-291 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dip. Fisica, Univ. Padova, via Marzolo 8, 35131 Padova, Italy b GILDA-CRG, ESRF, B.P. 220, 6 rue J. Horowitz, 38043, Grenoble, France c Dip. Chimica Fisica, Univ. Venezia, Dorsoduro 2137, 30123 Venezia, Italy (literal)
Titolo
  • Magnetic properties of Co-Cu nanoparticles dispersed in silica matrix (literal)
Abstract
  • The magnetic properties of Co-Cu/silica nanocomposites prepared by sequential ion implantation have been investigated. The nanostructure is formed of 4nm average size particles dispersed in silica matrix and with mainly FCC structure. The hysteresis loops at 3K indicate that the nanoparticles have uniaxial anisotropy with values smaller than that of single Cobalt implants. The samples are characterized by a superparamagnetic behavior with blocking temperatures that depend on the Co/Cu implanted ratio, and the blocking temperature distributions are narrower than those obtained by taking into account only the particle size distribution. Results are discussed considering size effects and that the nanoparticles are formed of a Co-Cu solid solution or only of Co. (literal)
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