I-V characteristics and magnetic properties of Y3 Fe5-xSnx O12 nanoparticles prepared by the sol-gel method

Abstract

This paper presents the effect of fabrication conditions on phase formation, magnetic properties and I-V characteristics of Sn-doped yttrium iron garnet Y3 Fe5-xSnx O12 (x=0.02; 0.04; 0.06; 0.08; 0.1). The particle samples of Y3 Fe5-x Snx O12 were prepared by the sol-gel method, and the manufacture conditions such as temperature, heating rate and time of heat treatment were investigated in order to find out the optimal conditions. The phase formation, crystal structure, average crystal size, particle shape and size were determined by X-ray diffraction (XRD), scanning electron microscopy (SEM). Magnetic properties of the samples were investigated in the temperature range of 88 to 560K on VSM. The obtained results showed that the magnetic moment of the samples increased with higher doping concentrations and the Curie temperature decreased. The I-V characteristics of the samples that were and were not treated in H2 gas were measured by the two-probe method