Nanoporous spherical assemblies of iso-oriented cobalt ferrite nanoparticles with a high surface area were prepared via a normal micelles process. The spherical magnetic assemblies were coated with a silica layer through an inverse micelles route. The microstructure and morphology were studied by X-ray diffraction, transmission electron microscopy and N 2-physisorption techniques. The primary CoFe 2O 4 nanocrystalline particles (∼7 nm) assemble into spherical nanoporous aggregates with an average size of about 50-60 nm and the coating process leads to core-shell nanostructures with an amorphous 7-8 nm thick silica shell that covers the spherical assemblies homogeneously. The magnetic properties of both uncoated and silica-coated nanostructures were also investigated

Spherical nanoporous assemblies of iso-oriented cobalt ferrite nanoparticles:synthesis, microstructure and magnetic properties

CANNAS, CARLA;ARDU, ANDREA;MUSINU, ANNA MARIA GIOVANNA;PEDDIS, DAVIDE;
2008-01-01

Abstract

Nanoporous spherical assemblies of iso-oriented cobalt ferrite nanoparticles with a high surface area were prepared via a normal micelles process. The spherical magnetic assemblies were coated with a silica layer through an inverse micelles route. The microstructure and morphology were studied by X-ray diffraction, transmission electron microscopy and N 2-physisorption techniques. The primary CoFe 2O 4 nanocrystalline particles (∼7 nm) assemble into spherical nanoporous aggregates with an average size of about 50-60 nm and the coating process leads to core-shell nanostructures with an amorphous 7-8 nm thick silica shell that covers the spherical assemblies homogeneously. The magnetic properties of both uncoated and silica-coated nanostructures were also investigated
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/96736
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 91
  • ???jsp.display-item.citation.isi??? 93
social impact