Glassy dynamics in the exchange bias properties of the iron/iron oxide nanogranular system (Articolo in rivista)

Type
Label
  • Glassy dynamics in the exchange bias properties of the iron/iron oxide nanogranular system (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.73.092403 (literal)
Alternative label
  • Fiorani, D (1); Del Bianco, L (2); Testa, AM (1); Trohidou, KN (3) (2006)
    Glassy dynamics in the exchange bias properties of the iron/iron oxide nanogranular system
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Fiorani, D (1); Del Bianco, L (2); Testa, AM (1); Trohidou, KN (3) (literal)
Pagina inizio
  • 092403 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 9 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) Istituto di Struttura della Materia--CNR, 00016 Monterotondo Scalo (Roma), Italy; 2) Dipartimento di Fisica, Università di Bologna and CNR-INFM, I-40127 Bologna, Italy; 3) Institute of Materials Science, NCSR Demokritos, 15310 Athens, Greece; (literal)
Titolo
  • Glassy dynamics in the exchange bias properties of the iron/iron oxide nanogranular system (literal)
Abstract
  • We have observed a glassy dynamics of the exchange bias properties in a granular system composed of Fe nanoparticles dispersed in a structurally and magnetically disordered (cluster glasslike) Fe oxide matrix. The exchange field, measured at T=5 K, increases with increasing the time t(w) spent at T=50 K, after applying the cooling field. During t(w), the oxide phase evolves towards a lower energy configuration, resulting in a stronger interface exchange coupling with the Fe particle moments. Monte Carlo simulations on core/shell nanoparticles reproduce such aging effect, provided that a shell random anisotropy is assumed. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it