Isotopic effects on lattice constants and hydrogen diffusion in brucite
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- Tomioka Naotaka
- Institute for Study of the Earth's Interior, Okayama University
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- Okuchi Takuo
- Institute for Study of the Earth's Interior, Okayama University
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- Purevjav Narangoo
- Institute for Study of the Earth's Interior, Okayama University
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- Guo Xinzhuan
- Institute for Study of the Earth's Interior, Okayama University
Bibliographic Information
- Other Title
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- ブルーサイトにおける格子定数と水素拡散の同位体効果
Abstract
In the present study, precise XRD measurements of brucite show that the c-axis of Mg(OH)2 linearly decreases down to 99.7 % with increasing deuterium content. Diffusion profile measurements of the recovered sample from 1.8 GPa and 300 °C tentatively clarified that the H-D interdiffusion coefficient (DH−D) is on the order of 10−15 m2/s. It was also clarified that the DH−D in Mg(OH)2 is larger than that in Mg(OD)2. The dependencies of hydrogen isotopic ratios on the c-axis length and the H-D interdiffusion coefficient would be caused by different eigen values between OH and OD stretching vibrations along c-axis.
Journal
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- Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences
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Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2012 (0), 123-, 2012
Japan Association of Mineralogical Sciences
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Details 詳細情報について
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- CRID
- 1390001205546701056
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- NII Article ID
- 130005468246
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed