Synthesis of Nano sized Sm-Gd doped Magnesium ferrite and their Permittivity and Hysteresis Studies {tag} {/tag} International Journal of Computer Applications © 2011 by IJCA Journal Number 7 - Article 3 Year of Publication: 2011 Authors: Vasant Naidu S. Vijayaragavan R.Legadevi A.Senthil Kumar 10.5120/3655-5108 {bibtex}pxc3875108.bib{/bibtex} Abstract The compositions of magnesium ferrite having general formula Mg Smx Gdy Fe2−x-y O4 (where x = 0.012, 0.013, 0.014, 0.015 and y=0.001) were prepared by sol-gel method. The samples were characterized by XRD, EDAX, FTIR and SEM techniques. The nano size was confirmed by the XRD and SEM micro graphs. In the Hysteresis studies, it was found that the 1 / 4