AI Article Synopsis
- An extension of the eMS at ISOLDE/CERN enables quick sample removal for offline low-temperature studies, enhancing data collection.
- The study combines online eMS data from temperatures of 300 K to 650 K with rapid cooling and offline decay measurements to analyze the binding properties of Mössbauer probes in the lattice.
- Findings reveal distinct behaviors of Sn impurities in ZnO, with different charge states and distinct binding environments depending on temperatures, highlighting a new annealing stage at around 550 K.
Article Abstract
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 In (T = 2.4 min). Sn in the 4+ and 2+ charge states is observed. Above T > 600 K, Sn is observed and is ascribed to Sn on regular Zn sites, while Sn 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 Sn emission profile, and is attributed to the annihilation of close Frenkel pairs.
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| http://dx.doi.org/10.1063/5.0020951 | DOI Listing |
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