Mössbauer and magnetic studies on nanocrystalline NiFe2O4 particles prepared by ethylene glycol route
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NiFe2O4 nanoparticles have been synthesized by co-precipitation method at 145°C in N2 atmosphere using ethylene glycol as solvent and capping agent. This gives the promising synthesis route for nanoparticles at low temperature. The as-synthesized NiFe2O4 is subsequently heated at 400°C, 500°C, 700°C and 800°C. Crystallite size increases with the heat treatment temperature. The heat treatment temperature has direct effect on the electron paramagnetic resonance and intrinsic magnetic properties. The room temperature Mössbauer spectrum of the 800°C heated sample shows the two sextets pattern indicating that the sample is ferrimagnetic and Fe3 + ions occupy both tetrahedral and octahedral sites of spinel structure.
KeywordsFerrites Fine particles Mössbauer spectroscopy Magnetic material
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- 9.Prasad, S.: Solid state reactivity, characterization and anomalous magnetic behaviour of nanocrystalline spinel ferrite particles synthesized by citrate precursor technique. Dissertation, Indian Institute of Technology, Kanpur, India (1997)Google Scholar
- 11.Ningthoujam, R.S., Sudarsan, V., Godbole, S.V., Kienle, L., Kulshreshtha, S.K., Tyagi, A.K.: SnO2:Eu3 + nanoparticles dispersed in TiO2 matrix: improved energy transfer between semiconductor host and Eu3 + ions for the low temperature synthesized samples. Appl. Phys. Lett. 90, 173113–3 (2007)CrossRefGoogle Scholar
- 15.Sidorov, S.N., Bronstein, L.M., Davankov, V.A., Tsyurupa, M.P., Solodovnikov, S.P., Valetsky, P.M., Wilder, E.A., Spontak, R.J.: Cobalt nanoparticle formation in the pores of hyper-cross-linked polystyrene: control of nanoparticle growth and morphology. Chem. Mater. 11, 3210–3215 (1999)CrossRefGoogle Scholar
- 17.Cullity, B.D.: Introduction to Magnetic Materials. Addison-Wesley, London (1972)Google Scholar