Authors: S.R. Chitra; S. Sendhilnathan; V. Gayathri; M. Sivakumar
Addresses: Department of Physics, University College of Engineering Pattukkottai, Constituent College of Anna University Chennai, Tamil Nadu, India ' Department of Physics, University College of Engineering Pattukkottai, Constituent College of Anna University Chennai, Tamil Nadu, India ' Department of Physics, Thiagarajar College of Engineering, Tamil Nadu, India ' Department of Nanoscience and Technology, BiT Campus, Anna University Chennai, Tiruchirappalli, Tamil Nadu, India
Abstract: Mg0.40Mn0.60-xNixFe2O4 spinel nanoferrites were obtained by the co-precipitation method. The as-obtained powders were characterised by XRD analysis. All nanoferrite powders obtained from different organic precursors, after synthesising, were pure spinel phase, without secondary phases. TEM and AFM analyses confirmed that the average crystallite size, estimated from Scherrer equation, was the smallest for nanoferrites obtained from a mixture of the compounds and showing their particle size ranging from 20 nm to 50 nm. The prepared nanoferrites were characterised by Fourier transform-infrared spectroscopy (FT-IR), thermogravimetry (TG), differential thermal analysis (DTA) and derivative thermogravity (DTG). The results of these observations are described and discussed.
Keywords: spinel nanoferrites; co-precipitation; XRD; TEM; AFM; Fourier transform; infrared spectroscopy; FT-IR; thermogravimetry; ferrites; nanotechnology; crystallite size; differential thermal analysis; DTA; derivative thermogravity; DTG.
World Review of Science, Technology and Sustainable Development, 2016 Vol.12 No.4, pp.287 - 299
Accepted: 26 Feb 2016
Published online: 09 Feb 2017 *