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Synthesis and characterization of nickel ferrite magnetic nanoparticles |
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| Authors: | P. Sivakumar R. Ramesh S. Ponnusamy |
| Affiliation: | a T. S. Srinivasan Centre for Polytechnic College and Advanced Training (CPAT-TVS), Vanagaram, Chennai - 600 095, Tamilnadu, India b Center for Materials Science and Nano Devices, Department of Physics, SRM University, Kattankulathur, Kancheepuram - 603 203, Tamilnadu, India c Department of Physics, Loyola College, Nungambakkam, Chennai - 600 034, Tamilnadu, India |
| Abstract: | Nickel ferrite (NiFe2O4) nanoparticles are prepared by a polyvinyl alcohol (PVA) assisted sol-gel auto-combustion method. The structure, composition, morphology and magnetic properties of the gel precursor are characterized by powder XRD, FT-IR, TGA, HR-SEM, TEM, HR-TEM and VSM. XRD confirms the formation of single-phase nickel ferrite with space group of Fd3m and inverse spinel structure. The vibration properties of nanoparticles are analysed by FT-IR spectrum. The thermal decomposition of the gel precursors is investigated by TGA. HR-SEM and TEM images show that the particles have spherical shape with particle size in the range of ∼30 nm and consistent with XRD result. The magnetic properties of these nanoparticles are studied for confirming the ferromagnetic behaviour at room temperature. |
| Keywords: | A. Composites A. Nanostructures B. Chemical synthesis C. Thermogravimetric analysis (TGA) D. Magnetic properties |
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