Kalaiselvan, R. and Augustin, C.O. and Sepelak, V. and Berchmans, L.J. and Sanjeeviraja, C. and Gedanken, A. (2008) Synthesis and characterization of CuFe2O4/CeO2 nanocomposites. Materials Chemistry and Physics, 112 (2). pp. 373-380. ISSN 0254-0584

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Abstract

CuFe2O4/xCeO2 (x = 0, 1, 5, 10 and 20 wt%) nanocomposites have been prepared by urea–nitrate combustion method. The particle size of the as-prepared CuFe2O4/5 wt% CeO2 nanocomposite is 5–10 nm which has been revealed fromTEM and HRTEM images. The as-synthesized materials have been sintered at four different temperatures (600, 800, 1000 and 1100 ◦C) for 5 h. The XRD analysis of the samples reveals that the prepared materials possess tetragonal structure and have the composite behaviour. The 1100 ◦C sintered samples have further been characterized by FT-IR, UV–vis, SEM, ac electrical conductivity, dielectric constant, loss tangent, and Mössbauer spectra. The SEM images clearly show that CeO2 grows on the surface of the CuFe2O4. The electrical properties enumerate the ferrimagnetic behaviour of the synthesized materials. The Mössbauer spectra confirm both the inverse spinel structure of the prepared materials and the Fe3+ state of iron ions.

Item Type:	Article
Uncontrolled Keywords:	Spinelferrite; Nanocomposite; Electrical properties; Mossbauer spectra
Subjects:	Electropyrometallurgy
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	31 Mar 2012 11:28
Last Modified:	31 Mar 2012 11:28
URI:	http://cecri.csircentral.net/id/eprint/407

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