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We have got the conclusion that Zn1-xCoxO (x=0.01, 0.03) samples prepared by sol-gel method were both room temperature ferromagnetic in this study before, and it was found by structural analysis that there was no secondary phase existing except Co3O4.We also owned the FM to the F center model as the result of the proof of O vacancy. In this paper, we have made a further study of the extended x-ray...
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