Influence of annealing on Co-doped ZnO DMSs thin films synthesized by nanocluster-beam technique

Co-doped ZnO thin films fabricated by nanocluster-beam technique were annealed at 200, 400 and 700°C and the influence of temperature has been investigated. AFM images and UV absorbance spectra were carried out. Co-doped ZnO exhibited ferromagnetic at room temperature, and the saturation magnetization of films was also studied following the changing of annealing temperatures.