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The study investigates room temperature ferromagnetism in cobalt-doped ZnO samples synthesized via the sol-gel method with varying Co concentrations. X-ray diffraction and photoelectron spectroscopy confirm that Co occupies Zn sites without forming metallic clusters, while UV-visible absorption indicates an increase in band gap with Co doping. The samples exhibit clear ferromagnetism at room temperature, suggesting that the observed magnetism may arise from percolation of bound magnetic polarons.
- Author
- guptadebu28
- Language
- EN