Glassy dynamics in an exchange bias nanogranular system: Fe/FeOx (Articolo in rivista)

Type
Label
  • Glassy dynamics in an exchange bias nanogranular system: Fe/FeOx (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Fiorani D., Del Bianco L., Testa A.M. (2006)
    Glassy dynamics in an exchange bias nanogranular system: Fe/FeOx
    in Journal of magnetism and magnetic materials
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Fiorani D., Del Bianco L., Testa A.M. (literal)
Pagina inizio
  • 179 (literal)
Pagina fine
  • 184 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 300 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, ISM, I-00016 Monterotondo, Rome, Italy; Univ Bologna, INFM, I-40127 Bologna, Italy; Univ Bologna, Dept Phys, I-40127 Bologna, Italy (literal)
Titolo
  • Glassy dynamics in an exchange bias nanogranular system: Fe/FeOx (literal)
Abstract
  • The exchange bias properties of nanogranular system composed of Fe nanoparticles dispersed in ail iron oxide matrix are investigated at different temperatures, in the 5-250 K range, upon varying the cooling field and the temperature at which it is applied. The exchange field, resulting from the exchange coupling between the metallic particles and the oxide matrix, strongly depends on the magneto-thermal history of the sample. Such dependence is consequence of the glassy magnetic nature of the oxide phase and it is explained considering that different frozen spin configurations of the matrix are selected on varying the temperature and the field-cooling process. (c) 2005 Elsevier B.V. All rights reserved. (literal)
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