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Synthesis and study the structural and magnetic properties of cobalt substituted strontium hexaferrite

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Main Author: Ali, M. Mohammad
Other Authors: ali.mustafa@garmian.edu.krd
Format: Article
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2020
Subjects:
Sol-Gel Auto Combustion Method
Strontium Hexaferrite
Raman Spectra Measurement
Magnetic Properties
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/65179
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spelling my.unimap-651792020-06-23T05:03:59Z Synthesis and study the structural and magnetic properties of cobalt substituted strontium hexaferrite Ali, M. Mohammad ali.mustafa@garmian.edu.krd Sol-Gel Auto Combustion Method Strontium Hexaferrite Raman Spectra Measurement Magnetic Properties Link to publisher's homepage at http://ijneam.unimap.edu.my A sol-gel auto combustion approach was used to synthesize Co2+ substituted M-type strontium hexagonal ferrite with the chemical formula Sr1-xCoxFe12O19 (x=0.0, 0.25, 0.50 and 0.75). X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Raman Spectroscopy and Vibrating Sample Magnetometer (VSM) have been used to investigate the structural and magnetic properties as a function of cobalt ions substitution in Sr-hexaferrite. XRD pattern disclosed a single M-type hexagonal crystalline phase at x=0, while a desired phase of the strontium M-type hexaferrite with undesired phase appeared with the increase of the cobalt contents. FE-SEM images showed that the particles have irregular distribution and non-uniform shape. Generally, the cobalt ions substitution does not alter the surface morphology. The Raman spectra measurement proved the formation of magnetoplumbite structure of Sr1-xCoxFe12O19 system. The pure strontium hexaferrite compound showed sharp and intense peaks. The intensity of the peaks decreased when the Co2+ ions contents increased. VSM measurements showed ferromagnetic properties for all synthesized samples. The magnetic properties such as saturation magnetization (Ms), remanence magnetization (Mr), coercive field (Hc), effective anisotropy constant (Keff), anisotropy field (Ha), and squareness ratio (S) showed a progressive decrease with the increase of the cobalt ions substitution in the M-type strontium hexaferrite system. Replacement of strontium (Sr) by cobalt (Co) ions weakens the super-exchange interactions among particles. 2020-06-23T05:03:59Z 2020-06-23T05:03:59Z 2020-04 Article International Journal of Nanoelectronics and Materials, vol.13(2), 2020, pages 283-294 1985-5761 (Printed) 1997-4434 (Online) http://dspace.unimap.edu.my:80/xmlui/handle/123456789/65179 http://ijneam.unimap.edu.my en Universiti Malaysia Perlis (UniMAP)
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Sol-Gel Auto Combustion Method
Strontium Hexaferrite
Raman Spectra Measurement
Magnetic Properties
spellingShingle Sol-Gel Auto Combustion Method
Strontium Hexaferrite
Raman Spectra Measurement
Magnetic Properties
Ali, M. Mohammad
Synthesis and study the structural and magnetic properties of cobalt substituted strontium hexaferrite
description Link to publisher's homepage at http://ijneam.unimap.edu.my
author2 ali.mustafa@garmian.edu.krd
author_facet ali.mustafa@garmian.edu.krd
Ali, M. Mohammad
format Article
author Ali, M. Mohammad
author_sort Ali, M. Mohammad
title Synthesis and study the structural and magnetic properties of cobalt substituted strontium hexaferrite
title_short Synthesis and study the structural and magnetic properties of cobalt substituted strontium hexaferrite
title_full Synthesis and study the structural and magnetic properties of cobalt substituted strontium hexaferrite
title_fullStr Synthesis and study the structural and magnetic properties of cobalt substituted strontium hexaferrite
title_full_unstemmed Synthesis and study the structural and magnetic properties of cobalt substituted strontium hexaferrite
title_sort synthesis and study the structural and magnetic properties of cobalt substituted strontium hexaferrite
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2020
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/65179
_version_ 1674067690097999872
score 13.223943

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