Volume 12, Issue 4 (11-2013)                   2013, 12(4): 677-690 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Jafari A, Boustani K, Salouti M. Investigation effect of Non-thermal coating Silica on the structural and magnetic properties of Fe3O4 nanoparticles. Journal title 2013; 12 (4) :677-690
URL: http://jsci.khu.ac.ir/article-1-1484-en.html
1- PhD student-University of Guilan
2- MSc student-University of Guilan
3- Academic staff- Islamic Azad University of Zanjan
Abstract:   (6205 Views)
In this study, Fe3O4/SiO2 core-shell magnetic nanoparticles (NPs) by two-step process were synthesized. First, Fe3O4 NPs by co-precipitation method of iron ions (Fe3+ and Fe2+) in an alkaline medium without using surfactant were synthesized and then silica shell with a non-thermal method without the use of linkers were installed on Fe3O4 NPs. facility of this method is noticeable. Results of X-ray powder diffraction patterns show that the inverse spinel structure of Fe3O4 and amorphous silicon was made. Fourier transform infrared spectroscopy confirmed the formation of these structures. There is no additional peak in XRD pattern which indicates that the prepared particles have pure Fe3O4 phase. TEM images show that core-shell structure is formed and mean size of NPs is 20 nm. VSM analysis showed that saturation magnetization of Fe3O4 nanoparticles after coating with silicon decreased.
Full-Text [PDF 602 kb]   (1867 Downloads)    
Type of Study: Research Paper |
Published: 2013/11/15

Add your comments about this article : Your username or Email:

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | Quarterly Journal of Science Kharazmi University

Designed & Developed by : Yektaweb