Back to Search
Start Over
Sol-Gel Fabricated CoFe2O4/SiO2 Nanocomposites: Synthesis and Magnetic Properties.
- Source :
-
IEEE Transactions on Magnetics . Oct2005, Vol. 41 Issue 10, p3469-3471. 3p. - Publication Year :
- 2005
-
Abstract
- Well-defined CoFe2 O4 nanoparticles embedded in an amorphous SiO2 matrix have been synthesized by a sol-gel method, characterized and investigated by Mössbauer spectroscopy and magnetic properties measurements. The mean particle size increases from 3 to 15 nm consistently with the temperature of the subsequent annealing, which varied from 800°C to 1100°C, respectively. The composites exhibit superparamagnetic behavior with the blocking temperature TB increasing with the mean particle size from 80 to 350 K, respectively. Sufficiently high value of Hc ∼ 2.5 T (at 2 K) has been observed for the sample annealed at 1100°C. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 41
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- 18870863
- Full Text :
- https://doi.org/10.1109/TMAG.2005.854879