Preparation and characterization of amorphous nanometre sized Fe3O4powder
- 1 January 1997
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 7 (6) , 1007-1009
- https://doi.org/10.1039/a606739e
Abstract
A method for the preparation of amorphous Fe 3 O 4 powder with a particle size of ca. 25 nm is reported. Amorphous Fe 3 O 4 powder can be simply synthesized by slowly exposing amorphous Fe powder to the air. The amorphous properties of Fe 3 O 4 nanoparticles were characterized by X-ray diffraction, Mössbauer spectroscopy, transmission electron micrography, differential scanning calorimetry and quantum design SQUID magnetization measurements. This amorphous Fe 3 O 4 powder is superparamagnetic and its magnetization at room temperature is very low (-1 ); it crystallizes at 285±15 °C.Keywords
This publication has 0 references indexed in Scilit: