Preparation and characterization of Chromium-Doped Ni-Cu-Zn Nano Ferrites

Bajarang Laxman Shinde, Laxman Appa Dhale, Venkat S. Suryavanshi, Kishan Shankarrao Lohar

Abstract


Chromium doped Ni-Cu-Zn nano ferrites with chemical formula Ni0.2Cu0.2Zn0.6Fe2-xCrxO4 (x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0) were prepared by using sol-gel auto combustion method. The prepared precursors of Chromium substituted Ni-Cu-Zn ferrites were sintered at 500 0C for 4h. Compositional stoichiometry were confirmed from EDAX patterns. The XRD data revealed that the all samples possess a single phase cubic spinel structure. The Lattice constant, X-ray density, hopping lengths and crystallite size determined from XRD data decreases with increase in Cr3+ concentration. The IR spectra show two major absorption bands, high frequency band ν1 ≈ 600 cm-1 and low frequency band ν2 ≈ 450 cm-1 attributed to the stretching vibration of tetrahedral and octahedral sites respectively. The surface morphology of the prepared samples was studied by Scanning Electron Microscopy and Transmission Electron Morphology.


Keywords


Spinel ferrites; Sol-gel auto combustion; TGA; SEM; TEM

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DOI: http://dx.doi.org/10.17344/acsi.2017.3619

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