By implanting ZnO, at 300 to 800K, with dilute radio-active 57Mn+ ions, decaying to the 57mFe Mössbauer state, it was shown that Fe atoms, located on Zn sites in a high-spin Fe3+ state at ≤600K with large magnetic moments, were probably in magnetically ordered atomic surroundings with ordering temperatures >>600K. The formation/annealing of the ordering was proposed to occur/disappear on an atomic scale upon the association/dissociation of complexes of Mn/Fe probe atoms with the (mobile) Zn vacancies that were created in the implantation process. These results challenged present attempts to model (ferro)magnetic ordering in 3d-metal doped oxides and suggested that this role played by vacancies in magnetism was a rather general phenomenon. Defect-Related Local Magnetism at Dilute Fe Atoms in Ion-Implanted ZnO. Weyer, G., Gunnlaugsson, H.P., Mantovan, R., Fanciulli, M., Naidoo, D., Bharuth-Ram, K., Agne, T.: Journal of Applied Physics, 2007, 102[11], 113915