COMBUSTION SYNTHESIZED Al+3 SUBSTITUTED CoFe2O4 FOR STRUCTURAL AND DIELECTRIC STUDIES

Volume 19 No 11 (2021)

Nandakumar V, Roopadevi, Khaleel Ahmed, Asiya Parveez, Sindhu S

DOI: 10.48047/nq.2021.19.11.NQ21252

Abstract

This article presents the structural and dielectric studies of trivalent metal ion (Al+3) doped cobalt ferrite. Trivalent metal ion (Al+3) was substituted in pure Cobalt ferrite (CoFe2O4) samples with the basic composition CoAlxFe2-xO4 (here, x= 0.0, 0.1, 0.15, 0.2 and 0.25), were synthesized by auto-combustion method using the precursors such as nitrates and citrate. Synthesized samples were sintered at 9500C and investigated for various properties. Phase of the synthesized samples were probed by X-ray diffraction (XRD) studies. Peaks observed in the XRD spectrum confirms the single phase spinel cubic structure for the Al+3 ion substituted CoFe2O4. Using FESEM, surface morphology of the samples has been investigated. Frequency dependent dielectric properties were studied using HIOKI make LCR meter model 3520-50 from 100Hz to 5 MHz

Keywords

Combustion; Dielectric; Frequency; Peaks; Precursors.

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