The Properties Of Diluted Magnetic Semiconductors With Fe, Co Co-doped TiO₂

With the emergence of diluted magnetic semiconductor (DMS) technology, the study in this field develops quickly. As there are many advantages which are not existed in the normal semiconductor with DMS, it exhibits a large potential value in the application.This paper briefly introduces the concept and characteristics of DMS and the latest research results in the field of DMS.Preparation of the Fe and Co doped TiO2 powder is done by sol-gel mothed.The diluted magnetic semiconductor materials were characterized with X-ray diffraction. These results show that Fe and Co were integrated into TiO2 lattice, and no significant phase separation was found.When Fe/Co doping ratio closed to equal, The doping would weak intensity of anatase crystalline phase which is the main phase in the sample at the greatest degree.With VSM tested on the magnetic properties of samples, it is found that when Fe/ Co doping ratio at 2:3 and 3:2, the intensity of magnetic property is much larger than that of the samples with Fe/Co at other doping ratio.So it is believed that the sample maximize the number of oxygen vacancies at these doping ratio by BMPs, which was poved by the PL conclusions.