Characterization of iron oxide nanoparticles by Mössbauer spectroscopy

Small particles of iron oxides, nominally 7 nm and 13 nm in diameter, have been studied by 57Fe Mössbauer spectroscopy in the temperature range 4 K to room temperature. The Mössbauer spectra show, at high temperature, relaxational behaviour in agreement with the superparamagnetism expected. At low t...

Full description

Saved in:
Bibliographic Details
Published in:Thin solid films 2006-10, Vol.515 (2), p.721-723
Main Authors: Kamali-M., Saeed, Ericsson, Tore, Wäppling, Roger
Format: Article
Language:English
Subjects:
Centroid shift
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Iron oxides
Magnetic hyperfine field
Materials science
Mössbauer spectroscopy
Nanoparticles
Nanoscale materials and structures: fabrication and characterization
Other topics in nanoscale materials and structures
Physics
Superparamagnetism
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Small particles of iron oxides, nominally 7 nm and 13 nm in diameter, have been studied by 57Fe Mössbauer spectroscopy in the temperature range 4 K to room temperature. The Mössbauer spectra show, at high temperature, relaxational behaviour in agreement with the superparamagnetism expected. At low temperature the spin motion becomes slower and, finally, blocked. There are also indications that the material is non-stoichiometric.
ISSN:0040-6090
1879-2731
1879-2731
DOI:10.1016/j.tsf.2005.12.180