Systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles

With excellent magnetic and electrical properties, ferrite magnetic nanoparticles have wide range of applications in wide range of fields. With tuneable physical and chemical properties, ferrites can have more applications and become more suitable for advancing technology. Normally, two approaches a...

Full description

Saved in:

Bibliographic Details
Main Author:	Low, Pek Kee
Format:	Thesis
Language:	English
Published:	2016
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/78746/1/LowPekKeeMFS2016.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.78746
record_format	uketd_dc
spelling	my-utm-ep.787462018-08-30T08:06:54Z Systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles 2016-05 Low, Pek Kee QC Physics With excellent magnetic and electrical properties, ferrite magnetic nanoparticles have wide range of applications in wide range of fields. With tuneable physical and chemical properties, ferrites can have more applications and become more suitable for advancing technology. Normally, two approaches are used in tuning the physical properties of ferrites, first approach is changing the synthesis methods and the second approach is altering the types of cations being introduced into the ferrites. In this study, Aluminium substituted nickel magnesium ferrite with general formula Ni1-xMgxFe2-xAlxO4 were synthesised with co-precipitation method. Three annealing temperature were chosen at 600°C, 800°C and 1000°C. The samples were characterised using X-ray diffractometer (XRD) and Fourier Transform Infrared Red Spectroscopy (FTIR) for structural analysis. Field emission scanning electron microscope (FESEM) was used to analyse the morphological property of the samples. Energy dispersive X-ray spectrometer was used to study the composition of the samples. The dielectric properties of the samples were analysed by using impedance analyser. XRD and FTIR shows the single phase spinel structure of the samples. Crystallite size decreases with increasing ratio of aluminium and magnesium except for the samples annealed at 600°C, and increases when the annealing temperature increases. Lattice constant of samples annealed at 800°C and 1000 °C are almost constant but becomes smaller when annealed at 600°C, which may due to redistribution of the cations with different annealing temperature. The degree of crystallinity increases as the annealing temperature increase, when the ratio of aluminium and magnesium reach 0.8, the degree of crystallinity deteriorated. FESEM micrograph shows the homogeneous distribution of the nanoparticles. Increment of dielectric constant and low loss factor of this substituted ferrites make it a good candidate for high frequency device applications. 2016-05 Thesis http://eprints.utm.my/id/eprint/78746/ http://eprints.utm.my/id/eprint/78746/1/LowPekKeeMFS2016.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:105817 masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QC Physics
spellingShingle	QC Physics Low, Pek Kee Systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles
description	With excellent magnetic and electrical properties, ferrite magnetic nanoparticles have wide range of applications in wide range of fields. With tuneable physical and chemical properties, ferrites can have more applications and become more suitable for advancing technology. Normally, two approaches are used in tuning the physical properties of ferrites, first approach is changing the synthesis methods and the second approach is altering the types of cations being introduced into the ferrites. In this study, Aluminium substituted nickel magnesium ferrite with general formula Ni1-xMgxFe2-xAlxO4 were synthesised with co-precipitation method. Three annealing temperature were chosen at 600°C, 800°C and 1000°C. The samples were characterised using X-ray diffractometer (XRD) and Fourier Transform Infrared Red Spectroscopy (FTIR) for structural analysis. Field emission scanning electron microscope (FESEM) was used to analyse the morphological property of the samples. Energy dispersive X-ray spectrometer was used to study the composition of the samples. The dielectric properties of the samples were analysed by using impedance analyser. XRD and FTIR shows the single phase spinel structure of the samples. Crystallite size decreases with increasing ratio of aluminium and magnesium except for the samples annealed at 600°C, and increases when the annealing temperature increases. Lattice constant of samples annealed at 800°C and 1000 °C are almost constant but becomes smaller when annealed at 600°C, which may due to redistribution of the cations with different annealing temperature. The degree of crystallinity increases as the annealing temperature increase, when the ratio of aluminium and magnesium reach 0.8, the degree of crystallinity deteriorated. FESEM micrograph shows the homogeneous distribution of the nanoparticles. Increment of dielectric constant and low loss factor of this substituted ferrites make it a good candidate for high frequency device applications.
format	Thesis
qualification_level	Master's degree
author	Low, Pek Kee
author_facet	Low, Pek Kee
author_sort	Low, Pek Kee
title	Systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles
title_short	Systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles
title_full	Systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles
title_fullStr	Systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles
title_full_unstemmed	Systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles
title_sort	systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2016
url	http://eprints.utm.my/id/eprint/78746/1/LowPekKeeMFS2016.pdf
_version_	1747818061164969984

Systhesis and characterization of aluminium substituted nickel magnesium ferrite nanoparticles

Similar Items