Structural, Optical and Magnetic Properties Of SnO2 Nano Particles: Transition Metal ( Mn, Co and Cr ) Doped SnO2 Nano Particles

Nano crystalline of SnO2 powder has been successfully synthesized by using tin(II) chloride dihydrate (SnCl2.2H2O), distilled water and liquid ammonia by the simple chemical co-precipitation method at room temperature with different SnCl2.2H2O molar concentration of 0.3 M, 0.4M and 0.5 M. The structural properties of the prepared SnO2 and transition metal doped SnO2 nano particles has been studied using X-ray diffraction method, scanning electron microscope and high resolution transmission electron microscope. The composition of the powders has been analyzed using energy dispersive X-ray analysis. The XRD pattern of the SnO2 nano particles indicates the formation of single phase rutile tetragonal structure. The grain size is found to be in the range of 3 nm to 7 nm and is found to increase with increasing SnCl2 molar concentration. The scanning electron microscope (SEM) images of the SnO2 shows that the crystallites have got agglomerated into nano sized particles. From the EDAX pattern the percentage of Sn and O has been determined. The high resolution transmission electron microscope (HRTEM) images showed lattice fringes corresponding to (110) plane of rutile phase of SnO2.