Structural and magnetic properties of NiFe 2O 4-SnO 2 nanocomposite
Abstract
The structural and magnetic properties of the NiFe 2O 4-SnO 2 composite, obtained by ball-milling during different times, were investigated by X-ray diffraction, small-angle X-ray scattering, Mössbauer spectroscopy and vibrating sample magnetometry. The results showed the reduction of the crystalline particle size and modification in the nature of the system interfaces as a consequence of the mechanical treatment. Specimens with smaller particles displayed strong superparamagnetism. Large variation of the hysteresis loops for the different milling times was observed.
- Publication:
-
Journal of Magnetism and Magnetic Materials
- Pub Date:
- May 2004
- DOI:
- 10.1016/j.jmmm.2003.12.1270
- Bibcode:
- 2004JMMM..272.2211A