The structural and magnetic properties of dual phase cobalt ferrite

Abstract The bismuth (Bi3+)-doped cobalt ferrite nanostructures with dual phase, i.e. cubic spinel with space group Fd3m and perovskite with space group R3c, have been successfully engineered via self-ignited sol-gel combustion route. To obtain information about the phase analysis and structural par...

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Autores principales: Shyam K. Gore, Santosh S. Jadhav, Vijaykumar V. Jadhav, S. M. Patange, Mu. Naushad, Rajaram S. Mane, Kwang Ho Kim
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Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/fe4a90085dcb45c58e282e91024896f3
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spelling oai:doaj.org-article:fe4a90085dcb45c58e282e91024896f32021-12-02T12:32:17ZThe structural and magnetic properties of dual phase cobalt ferrite10.1038/s41598-017-02784-z2045-2322https://doaj.org/article/fe4a90085dcb45c58e282e91024896f32017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02784-zhttps://doaj.org/toc/2045-2322Abstract The bismuth (Bi3+)-doped cobalt ferrite nanostructures with dual phase, i.e. cubic spinel with space group Fd3m and perovskite with space group R3c, have been successfully engineered via self-ignited sol-gel combustion route. To obtain information about the phase analysis and structural parameters, like lattice constant, Rietveld refinement process is applied. The replacement of divalent Co2+ by trivalent Bi3+ cations have been confirmed from energy dispersive analysis of the ferrite samples. The micro-structural evolution of cobalt ferrite powders at room temperature under various Bi3+ doping levels have been identified from the digital photoimages recorded using scanning electron microscopy. The hyperfine interactions, like isomer shift, quadrupole splitting and magnetic hyperfine fields, and cation distribution are confirmed from the Mossbauer spectra. Saturation magnetization is increased with Bi3+-addition up to x = 0.15 and then is decreased when x = 0.2. The coercivity is increased from 1457 to 2277 G with increasing Bi3+-doping level. The saturation magnetization, coercivity and remanent ratio for x = 0.15 sample is found to be the highest, indicating the potential of Bi3+-doping in enhancing the magnetic properties of cobalt ferrite.Shyam K. GoreSantosh S. JadhavVijaykumar V. JadhavS. M. PatangeMu. NaushadRajaram S. ManeKwang Ho KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Shyam K. Gore
Santosh S. Jadhav
Vijaykumar V. Jadhav
S. M. Patange
Mu. Naushad
Rajaram S. Mane
Kwang Ho Kim
The structural and magnetic properties of dual phase cobalt ferrite
description Abstract The bismuth (Bi3+)-doped cobalt ferrite nanostructures with dual phase, i.e. cubic spinel with space group Fd3m and perovskite with space group R3c, have been successfully engineered via self-ignited sol-gel combustion route. To obtain information about the phase analysis and structural parameters, like lattice constant, Rietveld refinement process is applied. The replacement of divalent Co2+ by trivalent Bi3+ cations have been confirmed from energy dispersive analysis of the ferrite samples. The micro-structural evolution of cobalt ferrite powders at room temperature under various Bi3+ doping levels have been identified from the digital photoimages recorded using scanning electron microscopy. The hyperfine interactions, like isomer shift, quadrupole splitting and magnetic hyperfine fields, and cation distribution are confirmed from the Mossbauer spectra. Saturation magnetization is increased with Bi3+-addition up to x = 0.15 and then is decreased when x = 0.2. The coercivity is increased from 1457 to 2277 G with increasing Bi3+-doping level. The saturation magnetization, coercivity and remanent ratio for x = 0.15 sample is found to be the highest, indicating the potential of Bi3+-doping in enhancing the magnetic properties of cobalt ferrite.
format article
author Shyam K. Gore
Santosh S. Jadhav
Vijaykumar V. Jadhav
S. M. Patange
Mu. Naushad
Rajaram S. Mane
Kwang Ho Kim
author_facet Shyam K. Gore
Santosh S. Jadhav
Vijaykumar V. Jadhav
S. M. Patange
Mu. Naushad
Rajaram S. Mane
Kwang Ho Kim
author_sort Shyam K. Gore
title The structural and magnetic properties of dual phase cobalt ferrite
title_short The structural and magnetic properties of dual phase cobalt ferrite
title_full The structural and magnetic properties of dual phase cobalt ferrite
title_fullStr The structural and magnetic properties of dual phase cobalt ferrite
title_full_unstemmed The structural and magnetic properties of dual phase cobalt ferrite
title_sort structural and magnetic properties of dual phase cobalt ferrite
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/fe4a90085dcb45c58e282e91024896f3
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