Journal article · Preprint article
Annealing studies combined with low temperature emission Mössbauer spectroscopy of short-lived parent isotopes: Determination of local Debye–Waller factors
University of Iceland1
University of the Witwatersrand2
Dosimetry, Hevesy and Dosimetry, Department of Health Technology, Technical University of Denmark3
Department of Health Technology, Technical University of Denmark4
Durban University of Technology5
CERN6
Bulgarian Academy of Sciences7
National Research Council of Italy8
University of the Basque Country9
An extension of the online implantation chamber used for emission Mössbauer Spectroscopy (eMS) at ISOLDE/CERN that allows for quick removal of samples for offline low temperature studies is briefly described. We demonstrate how online eMS data obtained during implantation at temperatures between 300 K and 650 K of short-lived parent isotopes combined with rapid cooling and offline eMS measurements during the decay of the parent isotope can give detailed information on the binding properties of the Mössbauer probe in the lattice.
This approach has been applied to study the properties of Sn impurities in ZnO following implantation of 119In (T½ = 2.4 min). Sn in the 4+ and 2+ charge states is observed. Above T > 600 K, Sn2+ is observed and is ascribed to Sn on regular Zn sites, while Sn2+ detected at T <600 K is due to Sn in local amorphous regions.
A new annealing stage is reported at T ≈ 550 K, characterized by changes in the Sn4+ emission profile, and is attributed to the annihilation of close Frenkel pairs.
Language: | English |
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Publisher: | AIP Publishing LLC |
Year: | 2021 |
Pages: | 013901 |
ISSN: | 10897623 and 00346748 |
Types: | Journal article and Preprint article |
DOI: | 10.1063/5.0020951 |
ORCIDs: | 0000-0002-8958-0245 , 0000-0003-4722-9622 , 0000-0001-9721-6374 , 0000-0002-0513-6869 , 0000-0003-2186-5321 , 0000-0002-3317-0220 , 0000-0002-9353-4137 , 0000-0001-7287-4370 , 0000-0002-3546-5102 and 0000-0003-3506-0954 |