| DOI: | 10.1002/2013GL058627
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| 论文题名: | Pressure-induced enhancement of proton conduction in brucite |
| 作者: | Guo X.; Yoshino T.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10389
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| EISSN: | 1944-10120
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| 出版年: | 2014
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| 卷: | 41, 期:3 | | 起始页码: | 813
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| 结束页码: | 819
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| 语种: | 英语
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| 英文关键词: | brucite
; electrical conductivity
; pressure effect
; proton conduction
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| Scopus关键词: | Brucite
; Crystallographic directions
; Electrical conductivity
; Function of pressure
; Impedance spectroscopy
; Orders of magnitude
; Pressure-induced enhancement
; Proton conduction
; Electric conductivity
; Pressure effects
; Protons
; brucite
; electrical conductivity
; hydrogen
; hydroxyl radical
; low pressure
; magnitude
; P-T conditions
; pressure effect
; temperature effect
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| 英文摘要: | The electrical conductivity of single-crystal brucite was measured as a function of pressure and temperature (P-T) using impedance spectroscopy (IS). IS measurements demonstrated that electrical conductivity perpendicular to the c axis is nearly half order of magnitude higher than that parallel to the c axis under the same P-T conditions. Electrical conductivity increased by 2 orders of magnitude during compression from 3.7 to 11 GPa, irrespective of crystallographic direction. However, the conductivity increase with pressure became less significant upon further compression from 11 to 13 GPa. The pressure effect is closely related to the interactions between neighboring hydroxyls. The ratio of free protons to total hydrogen increases from 2% to 33% when pressure increases from 3.7 to 13 GPa at 950 K. This indicates that most of the protons are bound within the crystal structure at low pressures, whereas more protons become free and mobile at higher pressures. Key Points Electrical conductivity of brucite is measured under high P-T conditions Electrical conductivity of brucite is greatly enhanced by compression More protons become mobile at higher pressure ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896797985&doi=10.1002%2f2013GL058627&partnerID=40&md5=b61b6c8df95c1f2b105ea0230953b189
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7653
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Institute for Study of the Earth's Interior, Okayama University, Tottori, Japan
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| Recommended Citation: | |
Guo X.,Yoshino T.. Pressure-induced enhancement of proton conduction in brucite[J]. Geophysical Research Letters,2014-01-01,41(3).
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