Please use this identifier to cite or link to this item:
http://essuir.sumdu.edu.ua/handle/123456789/42712
Or use following links to share this resource in social networks:
Tweet
Recommend this item
Title | The Effect of Nano-SiO2 on the Structural, Electrical and Magnetic Properties of SiO2-LiFe5O8 Glass–ceramics Prepared by Sol Gel Auto-combustion Processing |
Authors |
Shash, N.M.
Rashad, M.M. El-Shaarawy, M.G. Maklad, M.H. Afifi, F.A. |
ORCID | |
Keywords |
Spinel ferrite Combustion synthesis Microstructure Electrical properties Magnetic properties |
Type | Conference Papers |
Date of Issue | 2015 |
URI | http://essuir.sumdu.edu.ua/handle/123456789/42712 |
Publisher | Sumy State University |
License | |
Citation | The Effect of Nano-SiO2 on the Structural, Electrical and Magnetic Properties of SiO2-LiFe5O8 Glass–ceramics Prepared by Sol Gel Auto-combustion Processing [Текст] / M.M. Rashad, N.M. Shash, M.G. El-Shaarawy et al. // Nanomaterials: Applications & Properties (NAP-2015) : Proceedings of the International Conference. — Sumy : Sumy State University, 2015. — V.4, No1. — 01MFPM05. |
Abstract |
The glass–ceramic with the composition x(LiFe5O8)/(100 – x) SiO2 (x = 20, 30, 40, 50, 100 wt. % ) were prepared by sol gel auto-combustion method. The influence of the SiO2 ratio in the glass-ceramics strucure prepared was investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Crystalline phases (LiFe5O8, SiO2, Fe2O3) were observed by X-ray powder diffraction in the glasses annealed at 800°C
for 2h. The crystallite size was found to increase from 27.29 nm (x = 20%) to 91.48 nm(x = 100 %). The microstructure of the formed powders was SiO2 ratio dependent. Increasing the SiO2 ratio was found to inhibit the grain growth of the formed ferrite. The electrical conductivity of glass-ceramics samples were raised with increasing the concentration of SiO2 ratio as the result of increasing the hopping of electrons between
Fe2+ and Fe3+ ions. The magnetic characteristics of the prepared glass ceramics were performed using a vibrating sample magnetometer in function of the magnetic field. The samples heat -treated at 800°C for 2h present a ferrimagnetic behavior. Alongside, the formed crystalline silicate lithium ferrite had good magnetic properties. High saturation magnetization (51.9 emu/g) was attained the formed ferrite sample of x = 100 % ratio annealed at 800°C for 2h. |
Appears in Collections: |
Наукові видання (ЕлІТ) |
Views
![Canada](/flags/ca.gif)
1
![China](/flags/cn.gif)
2136
![Colombia](/flags/co.gif)
1
![Egypt](/flags/eg.gif)
125051
![Finland](/flags/fi.gif)
1
![France](/flags/fr.gif)
101426
![Germany](/flags/de.gif)
169216
![Greece](/flags/gr.gif)
11191181
![Hungary](/flags/hu.gif)
1
![India](/flags/in.gif)
1
![Indonesia](/flags/id.gif)
1
![Ireland](/flags/ie.gif)
816347669
![Japan](/flags/jp.gif)
1
![Lithuania](/flags/lt.gif)
1
![Netherlands](/flags/nl.gif)
101424
![Pakistan](/flags/pk.gif)
2
![Poland](/flags/pl.gif)
1
![Portugal](/flags/pt.gif)
1
![Romania](/flags/ro.gif)
2
![Russia](/flags/ru.gif)
3
![Serbia](/flags/rs.gif)
1
![Singapore](/flags/sg.gif)
674774959
![Slovakia](/flags/sk.gif)
1
![Ukraine](/flags/ua.gif)
47945
![United Kingdom](/flags/gb.gif)
55170
![United States](/flags/us.gif)
674774954
![Unknown Country](/flags/--.gif)
98041
Downloads
![A1](/flags/a1.gif)
1
![Austria](/flags/at.gif)
1
![China](/flags/cn.gif)
674774957
![Egypt](/flags/eg.gif)
1847556
![France](/flags/fr.gif)
1
![Germany](/flags/de.gif)
674774956
![India](/flags/in.gif)
137477783
![Iran](/flags/ir.gif)
10
![Kazakhstan](/flags/kz.gif)
1
![Netherlands](/flags/nl.gif)
1
![Norway](/flags/no.gif)
1
![Romania](/flags/ro.gif)
674774955
![Russia](/flags/ru.gif)
10
![Saudi Arabia](/flags/sa.gif)
6
![Singapore](/flags/sg.gif)
674774960
![Taiwan](/flags/tw.gif)
1
![Ukraine](/flags/ua.gif)
1120220749
![United Kingdom](/flags/gb.gif)
1
![United States](/flags/us.gif)
674774958
![Unknown Country](/flags/--.gif)
25
Files
File | Size | Format | Downloads |
---|---|---|---|
Shash.pdf | 1,01 MB | Adobe PDF | 338453637 |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.