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Vol. 36 No. 12 (2024): Vol 36 Issue 12, 2024

Copyright (c) 2024 Pushpa N. Awanti, M.V. Murugendrappa, Sharanappa Chapi, Shridhar N. Mathad, R.B. Konda, Shivraj G. Gounhalli

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This work is licensed under a Creative Commons Attribution 4.0 International License.

AC Conductivity, Dielectric and Structural Properties of Co0.6Zn0.4-xMgxFe2O4 Co-Zn Spinel Nano Ferrites Prepared using Sol-gel Autocombustion Method

https://doi.org/10.14233/ajchem.2024.32780
Pushpa N. Awanti
Department of Physics, Government First Grade College, Patrakarta Nagar, Hubballi-580032, India; Department of Physics, Smt. Veeramma Gangasiri College for Women, Kalaburagi-585102, India
M.V. Murugendrappa
Department of Physics, B.M.S. College of Engineering, Bengaluru-560019, India
https://orcid.org/0000-0003-4058-0006
Sharanappa Chapi
Department of Physics, B.M.S. College of Engineering, Bengaluru-560019, India
https://orcid.org/0000-0002-1798-5278
Shridhar N. Mathad
Department of Engineering Physics, K.L.E. Institute of Technology, Hubballi-580030, India
https://orcid.org/0000-0002-0875-2982
R.B. Konda
Department of Electronics, Smt. Veeramma Gangasiri College for Women, Kalaburagi-585102, India
https://orcid.org/0009-0002-6327-487X
Shivraj G. Gounhalli
Department of Physics, Smt. Veeramma Gangasiri College for Women, Kalaburagi-585102, India
https://orcid.org/0000-0002-3553-0509

Corresponding Author(s) : Shivraj G. Gounhalli

sgg19777@gmail.com

Asian Journal of Chemistry, Vol. 36 No. 12 (2024): Vol 36 Issue 12, 2024

Abstract

This study examined the structural, morphological, dielectric and AC conductivity properties of CoZnMg ferrite samples (Co0.6Zn0.4-xMgxFe2O4) with x = 0.00, 0.08, 0.16, 0.24, 0.32, 0.40. The sol-gel autocombustion method was used to synthesize the CoZnMg ferrite samples. The produced samples crystallize in the cubic spinel structure, according to an XRD analysis of the structural characteristics. The highly crystalline single-phase cubic spinel structure with a distinct peak in the (311) plane has been confirmed by XRD studies. The diameters of the crystallites have fluctuated between 24.92 and 9.80 nm. SEM, EDX and FTIR used to examine the morphological and elemental characteristics of the samples. According to FE-SEM, adding magnesium to the current ferrite system resulted in the loss of the porous gel structure. According to the relative stoichiometry of the Mg-substituted CoZn ferrite, the EDAX analysis verified the presence of Co, Zn, Mg and O. The investigated samples may be appropriate for a variety of uses, as indicated by the consistent conductivity at low frequencies. Within the frequency range of 100 to 5 MHz, the room temperature, electrical and dielectric properties were examined. The quantity of magnesium dopants and the microstructural features were related to the obtained results. The dielectric characteristics (ε′ and ε″) of the ferrites gradually decreased with frequency, even at higher frequencies. The samples exhibited interfacial polarization, which led to normal dielectric characteristics in line with the Maxwell-Wagner model.

Keywords

CoZn ferrite Sol-gel method Dielectric properties AC conductivity Maxwell-Wagner model
Awanti, P. N., Murugendrappa, M., Chapi, S., Mathad, S. N., Konda, R., & Gounhalli, S. G. (2024). AC Conductivity, Dielectric and Structural Properties of Co0.6Zn0.4-xMgxFe2O4 Co-Zn Spinel Nano Ferrites Prepared using Sol-gel Autocombustion Method. Asian Journal of Chemistry, 36(12), 2891–2898. https://doi.org/10.14233/ajchem.2024.32780
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