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Issue
Korean Journal of Chemical Engineering,
Vol.38, No.12, 2536-2540, 2021
Fabrication & characterization of novel conductive nanomaterial, CaxCr0.5-xMg0.5Fe2O4
Nosheen S, Iqbal SS, Bahadar A, Hossain N, Shahzad T
A novel conductive nano material, nano spinel ferrites having the composition of calcium chromium magnesium nanoferrites (CaxCr0.5-xMg0.5Fe2O4), was fabricated via sol-gel auto combustion process. The main objective was to fabricate highly stable nanocomposite as conductive material. Reaction among highly pure grade magnesium nitrate Mg (NO3)2ㆍ6H2O, calcium nitrate Ca (NO3)2ㆍ4H2O, and chromium nitrate Cr (NO3)3ㆍ9H2O, ferric nitrate Fe (NO3)3ㆍ9H2O took place to fabricate the desired material and, later on, an inductance (L)--capacitance (C)--resistance (R) meter (LCR meter) was used to determine the conductive behavior of the material. During characterization, thermogravimetric study confirmed that the stable phase was obtained above 950 °C. Fabricated ferrite FTIR spectrum was observed between 400 cm-1 and 4,500 cm-1. The entire sample's structural investigation was carried out employing X-ray diffraction. Morphological analysis confirmed that particles possess angular structures having acute angles adjoining surfaces. During conductivity test, all fabricated nanoferrites presented that with the increase of frequency by LCR meter, AC conductivity had been increased. The outcome of doping of calcium on chromium magnesium nanoferrites on structural in addition to dielectric properties was synergistic.
Keywords: Spinel Ferrites; X-Ray Diffraction; Thermal Analysis; FTIR; Dielectric Properties
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