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Correlation between Structural, Magnetic and Spectroscopic Properties of Mg Substituted CoFe2O4 Cover

Correlation between Structural, Magnetic and Spectroscopic Properties of Mg Substituted CoFe2O4

Open Access
|Jun 2018

Abstract

Mg substituted cobalt ferrite spinel powder samples with the general formula MgxCO1-xFe2O4(x = 0 to 0.25) were synthesized chemically through sol-gel method and annealed at 1100 °C for 2 h. They were initially screened for the structural and morphological properties by X-ray diffraction and field emission scanning electron microscopy, respectively. Vibrational properties of the samples were studied by Raman and infrared spectroscopies. X-ray diffraction confirmed the formation of single pure or near-pure phase with cubic spinel structure for all the samples with expected occupancy values. The field emission scanning electron microscopy revealed a decrease in the particle size with an increase in Mg concentration. Both structural and magnetic properties of the samples were characterized using Mössbauer spectroscopy while the magnetic properties were studied using vibrating sample magnetometry. The changes in magnetic moment of ions, their coupling with neighboring ions and cation exchange interactions were confirmed from the Mössbauer spectroscopy analysis. Saturation magnetization and coercivity values can be explained based on the Slater-Pauling curve. The magnetometry results showed a decrease in saturation magnetization of the samples with increase in Mg concentration

DOI: https://doi.org/10.1515/msp-2018-0043 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 310 - 319
Submitted on: Jun 5, 2017
Accepted on: Mar 28, 2018
Published on: Jun 25, 2018
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2018 Gnana Praveena Nethala, Ravindar Tadi, Aroli Venkateswara Anupama, Satish Laxman Shinde, V. Veeraiah, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.