Effects of Nd:YAG laser irradiation on structural, morphological, cation distribution and magnetic properties of nanocrystalline CoFe2O4

Cobalt ferrite nanoparticles 20 nm in size were synthesised by sol-gel auto-combustion. The samples were irradiated with a Nd:YAG laser to investigate the effects of irradiation on the structural, cationic distribution and magnetic properties. The virgin and irradiated samples were characterised by...

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Bibliographic Details
Published in:Applied surface science 2011-08, Vol.257 (20), p.8511-8517
Main Authors: MANE, Maheshkumar L, DHAGE, Vinod N, SUNDAR, R, RANGANATHAN, K, OAK, S. M, SHENGULE, D. R, JADHAV, K. M
Format: Article
Language:English
Subjects:
Cationic
Cations
Clusters, nanoparticles, and nanocrystalline materials
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Diffraction
Exact sciences and technology
Irradiation
Lasers
Lattice parameters
Lattices
Magnetic properties
Magnetic properties of nanostructures
Magnetization
Materials science
Materials synthesis
materials processing
Nanoparticles
Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
Physical radiation effects, radiation damage
Physics
Sol-gel processing, precipitation
Structure of solids and liquids
crystallography
Ultraviolet, visible, and infrared radiation effects (including laser radiation)
X-rays
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Summary:Cobalt ferrite nanoparticles 20 nm in size were synthesised by sol-gel auto-combustion. The samples were irradiated with a Nd:YAG laser to investigate the effects of irradiation on the structural, cationic distribution and magnetic properties. The virgin and irradiated samples were characterised by XRD. The XRD studies at room temperature showed that defects were created in the lattice after irradiation which affected the structural, cationic distribution and magnetic properties. The lattice constant observed from XRD data for virgin and irradiated samples showed an increase after irradiation. Cation distribution was investigated by XRD. The observed reduction in the saturation magnetisation after irradiation was due to the partial formation of paramagnetic centres and the rearrangement of cations in the lattice.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2011.05.004