http://hdl.handle.net/20.500.12128/4006
Tytuł: | Preliminary results of 57Fe Mössbauer spectroscopy of metamict samarskite after one-hour high temperature annealing in argon |
Autor: | Malczewski, Dariusz Grabias, Agnieszka |
Słowa kluczowe: | Metamict minerals; Mössbauer spectroscopy; Recrystallization; Samarskite |
Data wydania: | 2017 |
Źródło: | Nukleonika, Vol. 62, iss. 2 (2017), s. 141-144 |
Abstrakt: | The preliminary results of 57Fe Mössbauer spectroscopy and X-ray diffraction (XRD) of fully metamict samarskite dated at ~1500 Ma, which absorbed α-dose of 6.5 × 1017 α-decay mg-1, are reported after one-hour annealing at 673, 873, 1173 and 1373 K in argon atmosphere. Metamict minerals contain radioactive elements that degrade their crystal structures over geological time. All the Mössbauer spectra obtained can be fitted to two quadrupole doublets assigned to Fe2+ and Fe3+ in octahedral positions. The relative contribution of Fe2+ (Fe2+/Fe) reaches a minimum of 0.10 at 1173 K. |
Opis: | This work was supported by National Science Centre, Poland, through grant no. PW-0415-003. |
URI: | http://hdl.handle.net/20.500.12128/4006 |
DOI: | 10.1515/nuka-2017-0020 |
ISSN: | 0029-5922 |
Pojawia się w kolekcji: | Artykuły (WNP) |
Plik | Opis | Rozmiar | Format | |
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Malczewski_Preliminary_results_of_57Fe_Mossbauer_spectroscopy.pdf | 400,21 kB | Adobe PDF | Przejrzyj / Otwórz |
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