Masenda, HilaryGeburt, S.Bharuth-Ram, KrishNaidoo, D.Gunnlaugsson, H. P.Johnston, K.Mantovan, R.Mølholt, Torben EsmannNcube, M.Shayestehaminzadeh, S.Gíslason, H. P.Langouche, G.Ólafsson, S.Ronning, C.2018-05-172018-05-172016-02-22Masenda, H. et al. 2016. Emission Mössbauer spectroscopy study of fluence dependence of paramagnetic relaxation in Mn/Feimplanted ZnO. Hypefine Interact. 237: 40. https://doi.org/10.1007/s10751-016-1293-60304-3843 (print)1572-9540 (online)http://hdl.handle.net/10321/2969Emission Mössbauer Spectroscopy following the implantation of radioactive precursor isotope 57Mn+ (T 1/2= 1.5 min) into ZnO single crystals at ISOLDE/CERN shows that a large fraction of 57Fe atoms produced in the 57Mn beta decay is created as paramagnetic Fe3+ with relatively long spin-lattice relaxation times. Here we report on ZnO pre-implanted with 56Fe to fluences of 2×1013, 5×10 13 and 8 × 1013 ions/cm2 in order to investigate the dependence of the paramagnetic relaxation rate of Fe3+ on fluence. The spectra are dominated by magnetic features displaying paramagnetic relaxation effects. The extracted spin-lattice relaxation rates show a slight increase with increasing ion fluence at corresponding temperatures and the area fraction of Fe3+ at room temperature reaches a maximum contribution of 80(3)% in the studied fluence range.7 penZnOFe implantationEmission Mössbauer spectroscopySpin relaxationParamagnetismArticlehttps://doi.org/10.1007/s10751-016-1293-6