Hydrogen solubility in amorphous Mg0.6SiO2.6 at high pressure
- Авторы: Efimchenko V.S.1, Barkovskii N.V.1, Fedotov V.K.1, Meletov K.P.1
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Учреждения:
- Institute of Solid State Physics
- Выпуск: Том 124, № 6 (2017)
- Страницы: 914-919
- Раздел: Solids and Liquids
- URL: https://journals.rcsi.science/1063-7761/article/view/192260
- DOI: https://doi.org/10.1134/S1063776117050028
- ID: 192260
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Аннотация
The solubility of hydrogen in amorphous Mg0.6SiO2.6 at a temperature of 250°C and pressures up to 75 kbar is studied using a quenching technique. The molar ratio H2/formula unit is found to nonlinearly increase with pressure from x = 0.12 at P = 10 kbar to x = 0.303 at P = 75 kbar. An investigation of the quenched samples by Raman spectroscopy demonstrated that hydrogen dissolves in amorphous Mg0.6SiO2.6 in the form of H2 molecules. X-ray diffraction and Raman studies showed that the hydrogenation of the samples is likely to be accompanied by a phase transition in the amorphous lattice of Mg0.6SiO2.6 at P ≈ 52.5 kbar to a denser amorphous modification.
Об авторах
V. Efimchenko
Institute of Solid State Physics
Автор, ответственный за переписку.
Email: efimchen@issp.ac.ru
Россия, Chernogolovka, Moscow oblast, 142432
N. Barkovskii
Institute of Solid State Physics
Email: efimchen@issp.ac.ru
Россия, Chernogolovka, Moscow oblast, 142432
V. Fedotov
Institute of Solid State Physics
Email: efimchen@issp.ac.ru
Россия, Chernogolovka, Moscow oblast, 142432
K. Meletov
Institute of Solid State Physics
Email: efimchen@issp.ac.ru
Россия, Chernogolovka, Moscow oblast, 142432
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