Skip to main content

NiFe2O4 Nanoparticles Dispersed in an Aerogel Silica Matrix: An X-ray Absorption Study

Carta, Daniela, Loche, Danilo, Mountjoy, Gavin, Navarra, Gabriele, Corrias, Anna (2008) NiFe2O4 Nanoparticles Dispersed in an Aerogel Silica Matrix: An X-ray Absorption Study. Journal of Physical Chemistry C, 112 (40). pp. 15623-15630. ISSN 1932-7447. (doi:10.1021/jp803982k) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:40482)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1021/jp803982k

Abstract

The formation of NiFe2O4 nanoparticles dispersed in an aerogel silica matrix was investigated as a function of calcination temperature by X-ray absorption fine structure and X-ray absorption near edge structure at both the Fe and Ni K-edges. In particular, nanocomposite aerogels containing a relative NiFe2O4 amount of 10 wt % and calcined at 450, 750 (1 h and 20 h), and 900 °C were studied. A quantitative determination of the relative occupancy of iron and nickel cations in the octahedral and tetrahedral sites of the spinel structure was obtained. It has been found that nickel ferrite prepared by sol?gel has the classical inverted spinel structure found in bulk materials with nickel(II) cations fully occupying the octahedra sites and iron(III) equally distributed between octahedra and tetrahedra sites.

Item Type: Article
DOI/Identification number: 10.1021/jp803982k
Additional information: number of additional authors: 4;
Subjects: Q Science
Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Anna Corrias
Date Deposited: 07 Mar 2014 00:05 UTC
Last Modified: 27 Jan 2020 04:05 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/40482 (The current URI for this page, for reference purposes)
Mountjoy, Gavin: https://orcid.org/0000-0002-6495-2006
Corrias, Anna: https://orcid.org/0000-0002-5190-8196
  • Depositors only (login required):