Bimagnetic CoO Core/CoFe2O4 Shell Nanoparticles: Synthesis and Magnetic Properties (Articolo in rivista)

Type
Label
  • Bimagnetic CoO Core/CoFe2O4 Shell Nanoparticles: Synthesis and Magnetic Properties (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/cm2028959 (literal)
Alternative label
  • Enio Lima Jr., Elin L. Winkler, Dina Tobia, Horacio E. Troiani, Roberto D. Zysler, Elisabetta Agostinelli, Dino Fiorani (2012)
    Bimagnetic CoO Core/CoFe2O4 Shell Nanoparticles: Synthesis and Magnetic Properties
    in Chemistry of materials; ACS, American chemical society, Washington, DC (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Enio Lima Jr., Elin L. Winkler, Dina Tobia, Horacio E. Troiani, Roberto D. Zysler, Elisabetta Agostinelli, Dino Fiorani (literal)
Pagina inizio
  • 512 (literal)
Pagina fine
  • 516 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 24 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 3 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Centro Atómico Bariloche, CNEA-CONICET, 8400 S.C. de Bariloche, Río Negro, Argentina Argentine-Italian Joint Laboratory of Nanomagnetism, LIANAM, Laboratorio Resonancias Magnéticas -CNEA / Istituto di Struttura della Materia - CNR Istituto di Struttura della Materia, CNR, Area della Ricerca di Roma, C.P. 10, I-00016 Monterotondo Staz., Rome, Italy (literal)
Titolo
  • Bimagnetic CoO Core/CoFe2O4 Shell Nanoparticles: Synthesis and Magnetic Properties (literal)
Abstract
  • In this work we report on the synthesis, the microstructural characterization, and the magnetic properties of similar to 7 nm bimagnetic core/shell nanoparticles prepared by seed-mediated growth high temperature decomposition of organometallic precursor. The nanoparticles are formed by an antiferromagnetic CoO core coated with ferromagnetic CoFe2O4 shell of 2-3 run of thickness. XRD and electron diffraction patterns show the reflections of the structure of the CoFe2O4 and CoO phases and Dark- and Bright-field TEM images provide evidence of the core shell morphology of the system. Magnetic measurements show that the system presents a remarkably large coercivity and high squareness (at 5 K, Hc = 27.8 kOe and M-r/M-s = 0.79), compared to CoFe2O4 single phase nanoparticles of comparable size. The enhancement of the effective anisotropy is attributed to the surface and interface exchange coupling effects. (literal)
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