Prep aration and Magne tic Properties of N anostruct ured Mn۰. ۵Zn۰.۵Fe۲O ۴ in Silica Matr ix

Nano materials rep resent a novel class of materials with physical and chemic al properties that are di fferent from those of th e bulk mate rial. Due to the small dimensions o f nanocrystals, an important fraction of the ato ms is on the surface, w hich induce s properties that are different from polycrystalline material obtained through co nventional methods. Th e embeddi ng of magne tic nanocr ystals in inorganic or organic m atrices is of great inte rest in practical applications, due to the high-p erformance (optical, catalytic, magnetic, etc.) properties of these nanocomposites. For this reason, particular interest has been s hown recently in developing synthe sis method s that make it possible to obtain su ch nanomat erials. The sol–gel synthesis method makes it ossible to obtain magn etic nanoparticles dispersed in inorg anic matric es, by hindering the gro wth of the nanocrystallites in the pores of the matrix, as well as their aggre gation. In this work, we prepared m anganese-zi nc ferrite in silica matrix via a modified sol-gel method w hich is developed in our laboratory and them the effect of ann ealing temperature on th e magnetic p roperties of prepared ferrite was inv estigated.

کلیدواژه ها:

Nano structure ، Ferrite ، Mn۰.۵Z n۰.۵Fe۲O۴ ، Silica