Heterodimers based on CoPt3-Au Nanocrystals with tunable domain size (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Heterodimers based on CoPt3-Au Nanocrystals with tunable domain size (Articolo in rivista) (literal)

Anno

• 2006-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1021/ja0607741 (literal)

Alternative label

• Teresa Pellegrino; Angela Fiore; Elvio Carlino; Cinzia Giannini; P. Davide Cozzoli; Giuseppe Ciccarella; Marc Respaud; Luca Palmirotta; Roberto Cingolani; Liberato Manna (2006)
  Heterodimers based on CoPt3-Au Nanocrystals with tunable domain size
  in Journal of the American Chemical Society (Online)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Teresa Pellegrino; Angela Fiore; Elvio Carlino; Cinzia Giannini; P. Davide Cozzoli; Giuseppe Ciccarella; Marc Respaud; Luca Palmirotta; Roberto Cingolani; Liberato Manna (literal)

Pagina inizio

• 6690 (literal)

Pagina fine

• 6698 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 128 (literal)

Rivista

• Journal of the American Chemical Society (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 20 (literal)

Note

• Scopus (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• National Nanotechnology Laboratory of CNR-INFM; TASC-INFM-CNR National Laboratory; CNR-Istituto di Cristallografia; LNMO-INSA (literal)

Titolo

• Heterodimers based on CoPt3-Au Nanocrystals with tunable domain size (literal)

Abstract

• We describe an approach to synthesize colloidal nanocrystal heterodimers composed of CoPt3 and Au. The growth is based on the nucleation of gold domains on preformed CoPt3 nanocrystals. It is a highly versatile methodology which allows us to tune independently the size of the two domains in each dimer by varying several reaction parameters. The statistical analysis of the distribution of the domain sizes in the dimers and the compositional mapping achieved by dark field imaging and energy dispersive spectroscopy confirm that the two domains in each dimer are indeed made of CoPt3 and Au, respectively. Structural characterization by high-resolution transmission electron microscopy shows that the two domains, both having cubic fcc Bravais lattice, can share a common {111}, {100}, or {110} facet, depending on the size of the initial CoPt3 seeds. The magnetization measurements evidence a ferromagnetic CoPt3 phase with a relatively low anisotropy as a consequence of their disordered crystalline structure, regardless of the presence of a Au tip. We believe that this prototype of nanocrystal dimer, which can be manipulated under air, can find several applications in nanoscience, as the Au section can be exploited as the preferential anchor point for various molecules, while the CoPt3 domain can be used for magnetic detection. (literal)

Prodotto di

• Sviluppo di metodologie di microscopia elettronica per lo studio a risoluzione atomica delle proprieta' strutturali, elettroniche e magnetiche dei materiali (MD.P04.006.003) (Modulo)

Autore CNR

• LIBERATO MANNA (Persona)
• CINZIA GIANNINI (Persona)
• ELVIO CARLINO (Unità di personale interno)
• TERESA PELLEGRINO (Unità di personale interno)

Incoming links:

Autore CNR di

• CINZIA GIANNINI (Persona)
• ELVIO CARLINO (Unità di personale interno)
• LIBERATO MANNA (Persona)
• TERESA PELLEGRINO (Unità di personale interno)

Prodotto

• Sviluppo di metodologie di microscopia elettronica per lo studio a risoluzione atomica delle proprieta' strutturali, elettroniche e magnetiche dei materiali (MD.P04.006.003) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of the American Chemical Society (Rivista)