Influence of Cu-Cr substitution on structural, morphological, electrical and magnetic properties of magnesium ferrite
Cu-Cr substituted magnesium ferrite materials (Mg1 − xCuxCrxFe21 − xO4 with x = 0.0–0.7) have been synthesized by the solid state reaction method. XRD analysis revealed the prepared samples are cubic spinel with single phase face centered cubic. A significant decrease of ∼41.15 nm in particle size i...
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doaj-992ced699ee9478aa941d5786125243d2020-11-24T23:29:27ZengElsevierResults in Physics2211-37972018-03-018772779Influence of Cu-Cr substitution on structural, morphological, electrical and magnetic properties of magnesium ferriteS. Yonatan Mulushoa0N. Murali1M. Tulu Wegayehu2S.J. Margarette3K. Samatha4Department of Physics, Andhra University, Visakhapatnam, Andhra Pradesh, India; Corresponding authors at: Department of Physics, Andhra University, Visakhapatnam, Andhra Pradesh, India (N. Murali).Department of Physics, Andhra University, Visakhapatnam, Andhra Pradesh, India; Advanced Analytical Laboratory, Andhra University, Visakhapatnam, Andhra Pradesh, India; Corresponding authors at: Department of Physics, Andhra University, Visakhapatnam, Andhra Pradesh, India (N. Murali).Department of Physics, Andhra University, Visakhapatnam, Andhra Pradesh, IndiaDepartment of Physics, Andhra University, Visakhapatnam, Andhra Pradesh, IndiaDepartment of Physics, Andhra University, Visakhapatnam, Andhra Pradesh, IndiaCu-Cr substituted magnesium ferrite materials (Mg1 − xCuxCrxFe21 − xO4 with x = 0.0–0.7) have been synthesized by the solid state reaction method. XRD analysis revealed the prepared samples are cubic spinel with single phase face centered cubic. A significant decrease of ∼41.15 nm in particle size is noted in response to the increase in Cu-Cr substitution level. The room temperature resistivity increases gradually from 0.553 × 105 Ω cm (x = 0.0) to 0.105 × 108 Ω cm (x = 0.7). Temperature dependent DC-electrical resistivity of all the samples, exhibits semiconductor like behavior. Cu-Cr doped materials can be suitable to limit the eddy current losses. VSM result shows pure and doped magnesium ferrite particles show soft ferrimagnetic nature at room temperature. The saturation magnetization of the samples decreases initially from 34.5214 emu/g for x = 0.0 to 18.98 emu/g (x = 0.7). Saturation magnetization, remanence and coercivity are decreased with doping, which may be due to the increase in grain size. Keywords: Solid state reaction, X-ray diffraction, Crystallite size, Magnetic and electrical properties, Saturation magnetizationhttp://www.sciencedirect.com/science/article/pii/S2211379717324646 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
S. Yonatan Mulushoa N. Murali M. Tulu Wegayehu S.J. Margarette K. Samatha |
spellingShingle |
S. Yonatan Mulushoa N. Murali M. Tulu Wegayehu S.J. Margarette K. Samatha Influence of Cu-Cr substitution on structural, morphological, electrical and magnetic properties of magnesium ferrite Results in Physics |
author_facet |
S. Yonatan Mulushoa N. Murali M. Tulu Wegayehu S.J. Margarette K. Samatha |
author_sort |
S. Yonatan Mulushoa |
title |
Influence of Cu-Cr substitution on structural, morphological, electrical and magnetic properties of magnesium ferrite |
title_short |
Influence of Cu-Cr substitution on structural, morphological, electrical and magnetic properties of magnesium ferrite |
title_full |
Influence of Cu-Cr substitution on structural, morphological, electrical and magnetic properties of magnesium ferrite |
title_fullStr |
Influence of Cu-Cr substitution on structural, morphological, electrical and magnetic properties of magnesium ferrite |
title_full_unstemmed |
Influence of Cu-Cr substitution on structural, morphological, electrical and magnetic properties of magnesium ferrite |
title_sort |
influence of cu-cr substitution on structural, morphological, electrical and magnetic properties of magnesium ferrite |
publisher |
Elsevier |
series |
Results in Physics |
issn |
2211-3797 |
publishDate |
2018-03-01 |
description |
Cu-Cr substituted magnesium ferrite materials (Mg1 − xCuxCrxFe21 − xO4 with x = 0.0–0.7) have been synthesized by the solid state reaction method. XRD analysis revealed the prepared samples are cubic spinel with single phase face centered cubic. A significant decrease of ∼41.15 nm in particle size is noted in response to the increase in Cu-Cr substitution level. The room temperature resistivity increases gradually from 0.553 × 105 Ω cm (x = 0.0) to 0.105 × 108 Ω cm (x = 0.7). Temperature dependent DC-electrical resistivity of all the samples, exhibits semiconductor like behavior. Cu-Cr doped materials can be suitable to limit the eddy current losses. VSM result shows pure and doped magnesium ferrite particles show soft ferrimagnetic nature at room temperature. The saturation magnetization of the samples decreases initially from 34.5214 emu/g for x = 0.0 to 18.98 emu/g (x = 0.7). Saturation magnetization, remanence and coercivity are decreased with doping, which may be due to the increase in grain size. Keywords: Solid state reaction, X-ray diffraction, Crystallite size, Magnetic and electrical properties, Saturation magnetization |
url |
http://www.sciencedirect.com/science/article/pii/S2211379717324646 |
work_keys_str_mv |
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