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Titolo:
Phase transitions in Co nanoclusters grown by pulsed laser deposition
Autore:
Dureuil, V; Ricolleau, C; Gandais, M; Grigis, C;
Indirizzi:
Univ Paris 06, Lab Mineral Cristallog Paris, CNRS, UMR 7590, F-75252 Paris05, France Univ Paris 06 Paris France 05 s, CNRS, UMR 7590, F-75252 Paris05, France Univ Paris 07, Lab Mineral Cristallog Paris, CNRS, UMR 7590, F-75252 Paris, France Univ Paris 07 Paris France F-75252 CNRS, UMR 7590, F-75252 Paris, France
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL D
fascicolo: 1, volume: 14, anno: 2001,
pagine: 83 - 88
SICI:
1434-6060(200104)14:1<83:PTICNG>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENERGY-LOSS-SPECTROSCOPY; THIN-FILMS; PARTICLES; METALS; COBALT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Dureuil, V Univ Paris 06, Lab Mineral Cristallog Paris, CNRS, UMR 7590, Case 115,4 PlJussieu, F-75252 Paris 05, France Univ Paris 06 Case 115,4 Pl Jussieu Paris France 05 05, France
Citazione:
V. Dureuil et al., "Phase transitions in Co nanoclusters grown by pulsed laser deposition", EUR PHY J D, 14(1), 2001, pp. 83-88

Abstract

The crystalline structure of Co clusters embedded in an amorphous Al2O3 matrix was studied by transmission electron microscopy (TEM) and electron diffraction (TED). In the first stage of the growth a metastable structure (body-centred-cubic) is observed. A face-centred-cubic phase (fcc) is found when the size of the clusters increases (diameter > 4 nm). The hexagonal-close-packed phase arises in the fee phase by a succession of stacking faults at the largest sizes. The mechanisms of phase transformation have been determined by using high resolution electron microscopy (HREM). The chemical nature of the clusters: in particular the existence of Co-O bonds, was investigated by using electron energy loss spectroscopy (EELS).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:25:48