Vacancy recovery and vacancy-hydrogen interaction in niobium and tantalum studied by positrons
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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1985-10-01
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Language
en
Pages
6
4326-4331
4326-4331
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Physical Review B, Volume 32, issue 7
Abstract
Positron-lifetime measurements in electron-irradiated pure Nb and Ta show that monovacancy migration occurs at 220 and 260 K, respectively. Hydrogen impurities can be bound to vacancies, as is experimentally observed in Ta at 70 K after low-temperature ±-particle irradiation. The vacancy-hydrogen complex formation shifts the vacancy migration to higher temperatures. Vacancy hydrogen complexes retain the capability to trap positrons. Theoretical calculations performed for hydrogen and positron states at vacancies are in agreement with experimental findings.Description
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Hautojarvi , P , Huomo , H , Puska , M & Vehanen , A 1985 , ' Vacancy recovery and vacancy-hydrogen interaction in niobium and tantalum studied by positrons ' , Physical Review B , vol. 32 , no. 7 , pp. 4326-4331 . https://doi.org/10.1103/PhysRevB.32.4326