Structural and Magnetic Property of Cr(3+) Substituted Cobalt Ferrite Nanomaterials Prepared by the Sol-Gel Method

Cobalt-chromium ferrite, CoCr(x)Fe(2−x)O(4) (x = 0–1.2), has been synthesized by the sol-gel auto-combustion method. X-ray diffraction (XRD) indicates that samples calcined at 800 °C for 3 h were a single-cubic phase. The lattice parameter decreased with increasing Cr concentration. Scanning electro...

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Detalles Bibliográficos
Autores principales: Lin, Jinpei, Zhang, Jiaqi, Sun, Hao, Lin, Qing, Guo, Zeping, Yang, Hu, He, Yun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6266238/
https://www.ncbi.nlm.nih.gov/pubmed/30366443
http://dx.doi.org/10.3390/ma11112095
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author Lin, Jinpei
Zhang, Jiaqi
Sun, Hao
Lin, Qing
Guo, Zeping
Yang, Hu
He, Yun
author_facet Lin, Jinpei
Zhang, Jiaqi
Sun, Hao
Lin, Qing
Guo, Zeping
Yang, Hu
He, Yun
author_sort Lin, Jinpei
collection PubMed
description Cobalt-chromium ferrite, CoCr(x)Fe(2−x)O(4) (x = 0–1.2), has been synthesized by the sol-gel auto-combustion method. X-ray diffraction (XRD) indicates that samples calcined at 800 °C for 3 h were a single-cubic phase. The lattice parameter decreased with increasing Cr concentration. Scanning electron microscopy (SEM) confirmed that the sample powders were nanoparticles. It was confirmed from the room temperature Mössbauer spectra that transition from the ferrimagnetic state to the superparamagnetic state occurred with the doping of chromium. Both the saturation magnetization and the coercivity decreased with the chromium doping. With a higher annealing temperature, the saturation magnetization increased and the coercivity increased initially and then decreased for CoCr(0.2)Fe(1.8)O(4).
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spelling pubmed-62662382018-12-17 Structural and Magnetic Property of Cr(3+) Substituted Cobalt Ferrite Nanomaterials Prepared by the Sol-Gel Method Lin, Jinpei Zhang, Jiaqi Sun, Hao Lin, Qing Guo, Zeping Yang, Hu He, Yun Materials (Basel) Article Cobalt-chromium ferrite, CoCr(x)Fe(2−x)O(4) (x = 0–1.2), has been synthesized by the sol-gel auto-combustion method. X-ray diffraction (XRD) indicates that samples calcined at 800 °C for 3 h were a single-cubic phase. The lattice parameter decreased with increasing Cr concentration. Scanning electron microscopy (SEM) confirmed that the sample powders were nanoparticles. It was confirmed from the room temperature Mössbauer spectra that transition from the ferrimagnetic state to the superparamagnetic state occurred with the doping of chromium. Both the saturation magnetization and the coercivity decreased with the chromium doping. With a higher annealing temperature, the saturation magnetization increased and the coercivity increased initially and then decreased for CoCr(0.2)Fe(1.8)O(4). MDPI 2018-10-25 /pmc/articles/PMC6266238/ /pubmed/30366443 http://dx.doi.org/10.3390/ma11112095 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lin, Jinpei
Zhang, Jiaqi
Sun, Hao
Lin, Qing
Guo, Zeping
Yang, Hu
He, Yun
Structural and Magnetic Property of Cr(3+) Substituted Cobalt Ferrite Nanomaterials Prepared by the Sol-Gel Method
title Structural and Magnetic Property of Cr(3+) Substituted Cobalt Ferrite Nanomaterials Prepared by the Sol-Gel Method
title_full Structural and Magnetic Property of Cr(3+) Substituted Cobalt Ferrite Nanomaterials Prepared by the Sol-Gel Method
title_fullStr Structural and Magnetic Property of Cr(3+) Substituted Cobalt Ferrite Nanomaterials Prepared by the Sol-Gel Method
title_full_unstemmed Structural and Magnetic Property of Cr(3+) Substituted Cobalt Ferrite Nanomaterials Prepared by the Sol-Gel Method
title_short Structural and Magnetic Property of Cr(3+) Substituted Cobalt Ferrite Nanomaterials Prepared by the Sol-Gel Method
title_sort structural and magnetic property of cr(3+) substituted cobalt ferrite nanomaterials prepared by the sol-gel method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6266238/
https://www.ncbi.nlm.nih.gov/pubmed/30366443
http://dx.doi.org/10.3390/ma11112095
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