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Hydrothermal synthesis and magnetic properties of gadolinium-doped CoFe2O4 nanoparticles
- Source :
-
Journal of Magnetism & Magnetic Materials . Jan2011, Vol. 323 Issue 1, p133-137. 5p. - Publication Year :
- 2011
-
Abstract
- Abstract: CoFe2−x Gd x O4 (x=0–0.25) nanoparticles were synthesized via a simple hydrothermal process at 200°C for 16h without the assistance of surfactant. The as-synthesized powders were characterized by X-ray diffraction, transmission electron microscopy, and a vibrating sample magnetometer. The X-ray diffraction results showed that the as-synthesized powders were in the pure phase with a doping amount of ≤0.25, and the peaks could be readily indexed to the cubic spinel cobalt ferrite. Transmission electron microscopy and high resolution transmission electron microscopy observations revealed that the gadolinium-doped cobalt ferrite nanoparticles were single crystal, roughly spherical, uniformly distributed, and not highly agglomerated. The room temperature magnetic field versus magnetization measurements confirmed a strong influence of gadolinium doping on the saturation magnetization and coercivity due to large lattice distortion and grain growth of small particles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03048853
- Volume :
- 323
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Magnetism & Magnetic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 54523215
- Full Text :
- https://doi.org/10.1016/j.jmmm.2010.08.048