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|Title:||Emission Mössbauer spectroscopy study of fluence dependence of paramagnetic relaxation in Mn/Feimplanted ZnO||Authors:||Masenda, Hilary
Mølholt, Torben Esmann
|Keywords:||ZnO;Fe implantation;Emission Mössbauer spectroscopy;Spin relaxation;Paramagnetism||Issue Date:||22-Feb-2016||Publisher:||Springer International Publishing Switzerland||Source:||Masenda, 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/s10751-016-1293-6||Abstract:||Emission 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.||URI:||http://hdl.handle.net/10321/2969||ISSN:||0304-3843 (print)
|Appears in Collections:||Research Publications (Applied Sciences)|
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