<abstract xmlns="http://www.w3.org/1999/xhtml">In this work, Ni substituted magnesium spinel ferrites having general formula Mg1−xNixFe2O4 (where x = 0.0, 0.1, 0.15, 0.2, 0.25 and 0.3) were synthesized by standard solid state reaction method. All the samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), DC resistivity measurements. X-ray diffraction analysis confirmed the single spinel phase. The lattice constant decreased with increasing Ni content due to the difference in the ionic radii of Mg2+ and Ni2+ ions. The FT-IR spectra reveled two prominent frequency bands in the wave number range of 400 cm−1 to 600 cm−1, which confirmed the cubic spinel structure of obtained compound and completion of chemical reaction. Magnetic studies revealed that the saturation magnetization increased with the substitution of Ni. The increase in magnetization was explained on the basis of distribution of magnetic and non-magnetic cations among A and B sites of the spinel lattice. A significant influence of cation distribution on DC electrical resistivity and activation energy was observed.</abstract>

In this work, Ni substituted magnesium spinel ferrites having general formula Mg1−xNixFe2O4 (where x = 0.0, 0.1, 0.15, 0.2, 0.25 and 0.3) were synthesized by standard solid state reaction method. All the samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), DC resistivity measurements. X-ray diffraction analysis confirmed the single spinel phase. The lattice constant decreased with increasing Ni content due to the difference in the ionic radii of Mg2+ and Ni2+ ions. The FT-IR spectra reveled two prominent frequency bands in the wave number range of 400 cm−1 to 600 cm−1, which confirmed the cubic spinel structure of obtained compound and completion of chemical reaction. Magnetic studies revealed that the saturation magnetization increased with the substitution of Ni. The increase in magnetization was explained on the basis of distribution of magnetic and non-magnetic cations among A and B sites of the spinel lattice. A significant influence of cation distribution on DC electrical resistivity and activation energy was observed.

Enhancement in magnetic and electrical properties of Ni substituted Mg ferrite

Department of Physics, G.V.P. College of Engineering for Women

Department of Engineering Chemistry, AU College of Engineering

Advanced Functional Materials Research Centre, Department of Physics

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Enhancement in magnetic and electrical properties of Ni substituted Mg ferrite"}

In this work, Ni substituted magnesium spinel ferrites having general formula Mg1−xNixFe2O4 (where x = 0.0, 0.1, 0.15, 0.2, 0.25 and 0.3) were synthesized by...

Enhancement in magnetic and electrical properties of Ni substituted Mg ferrite

Published Online: Feb 01, 2019

Page range: 644 - 654

Received: Sep 07, 2017

Accepted: May 12, 2018

DOI: https://doi.org/10.2478/msp-2018-0065

Keywords
Mg-Ni ferrite, solid state reaction, XRD, VSM, FE-SEM

© 2018 K. Ramarao et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Enhancement in magnetic and electrical properties of Ni substituted Mg ferrite

Published Online: Feb 01, 2019

Page range: 644 - 654

Received: Sep 07, 2017

Accepted: May 12, 2018

DOI: https://doi.org/10.2478/msp-2018-0065

KeywordsMg-Ni ferrite, solid state reaction, XRD, VSM, FE-SEM

© 2018 K. Ramarao et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Mg-Ni ferrite, solid state reaction, XRD, VSM, FE-SEM