Abstract
57Fe Emission Mossbauer spectra obtained after low fluence (<1012 cm −2) implantation of 57Mn (T1/2= 1.5 min.) into ZnO single crystal held at temperatures below room temperature (RT) are presented. The spectra can be analysed in terms of four components due to Fe 2+ and Fe 3+ on Zn sites, interstitial Fe and Fe in damage regions (Fe D). The Fe D component is found to be indistinguishable from similar component observed in emission Mossbauer spectra of higher fluence (∼1015 cm −2)57Fe/ 57Co implanted ZnO and 57Fe implanted ZnO, demonstrating that the nature of the damage regions in the two types of experiments is similar. The defect component observed in the low temperature regime was found to anneal below RT.
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