Preparation and annealing process of Y3Fe5O12 by sol-gel method

Abstract

Yttrium iron garnet (YIG) powders were prepared by sol-gel process. The synthesis parameters including pH values, molar ratio, reactive temperature and time and annealing treatment were studied for formation reaction of single phase YIG. The transformation of precursor to gel and to crystalline phase were determined by differential thermal analysis (DTA), thermogravimetric analysis (TGA), and X-ray powder diffraction (XRD). The results showed that pure phase YIG powders could be obtained through sol-gel process by controlling the relevant annealing process.