Defect-related local magnetism at dilute Fe atoms in ion-implanted ZnO

The implantation of ZnO with dilute, radioactive [super 57][Mn.sup.+] ions has shown that Fe atoms are in a magnetically ordered atomic surrounding with ordering temperatures >>600 K. The results have challenged the concepts regarding the modeling of magnetic ordering in 3d-metal doped oxides and have shown this role of vacancies in the magnetism to be a general