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Title: 中性子準弾性散乱による鉱物結晶構造中の水素移動の解析
Other Titles: Quasielastic neutron scattering for analyzing transport dynamics of chemically-bound hydrogen in minerals
Authors: 奥地, 拓生  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: OKUCHI, Takuo
Issue Date: 31-May-2021
Publisher: 日本結晶学会
Journal title: 日本結晶学会誌
Volume: 63
Issue: 2
Start page: 129
End page: 134
Abstract: We demonstrate that quasielastic neutron scattering is effective for analyzing transport dynamics of chemically-bound hydrogen cations within crystal structures of minerals. In this report, our recent results of its application for hydrogen in brucite Mg(OH)₂ are described. We observed two types of hydrogen transport dynamics, which included(i)jump within a single two-dimensional layer of hydrogen lattice, and(ii)jump from a layer into the next-nearest layer. The former observed at ≥ 230 K is ascribed to surface diffusion within basal planes of brucite grains, while the latter observed at 430 K is ascribed to proton conduction through the interior of the grains. These transport dynamics observed in the prototypical two-dimensional structure of brucite will have implication for understanding of hydrogen transport mechanisms occurring within various types of mineral structures.
Rights: © 2021 日本結晶学会
発行元の許諾条件により本文ファイルは 2022-05-31 に公開.
DOI(Published Version): 10.5940/jcrsj.63.129
Appears in Collections:Journal Articles

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