http://www.cnr.it/ontology/cnr/individuo/prodotto/ID52379
Spin-glass-like freezing and enhanced magnetization in ultra-small CoFe2O4 nanoparticles (Articolo in rivista)
- Type
- Label
- Spin-glass-like freezing and enhanced magnetization in ultra-small CoFe2O4 nanoparticles (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1088/0957-4484/21/12 (literal)
- Alternative label
Peddis D. (1,2,3), Cannas C. (2), Piccaluga G. (2), Agostinelli E. (1), Fiorani D. (1) (2010)
Spin-glass-like freezing and enhanced magnetization in ultra-small CoFe2O4 nanoparticles
in Nanotechnology (Bristol. Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Peddis D. (1,2,3), Cannas C. (2), Piccaluga G. (2), Agostinelli E. (1), Fiorani D. (1) (literal)
- Pagina inizio
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- http://dx.doi.org/10.1088/0957-4484/21/12/125705 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1) CNR--Istituto di Struttura della Materia, PO 10, 00016 Monterotondo Stazione, (RM), Italy;
2) Dipartimento di Scienze Chimiche, Universit` a di Cagliari, SS554, Bivio per Sestu, 09042 Monserrato (CA), Italy; (literal)
- Titolo
- Spin-glass-like freezing and enhanced magnetization in ultra-small CoFe2O4 nanoparticles (literal)
- Abstract
- The magnetic properties of ultra-small (3 nm) CoFe2O4 nanoparticles have been investigated by DC magnetization measurements as a function of temperature and magnetic field. The main features of the magnetic behaviour are blocking of non-interacting particle moments (zero-field-cooled magnetization TmaxH40 K), a rapid increase of saturation magnetization (up to values higher than for the bulk material) at low T and an increase in anisotropy below 30 K due to the appearance of exchange bias. The low temperature behaviour is determined by a random freezing of surface spins. Localized spin-canting and cation distribution between the two sublattices of the spinel structure account quantitatively for the observed increase in saturation magnetization. (literal)
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- Autore CNR
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