气候变化领域集成服务门户(CCPortal): The Effect of Water on Ionic Conductivity in Olivine

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DOI	10.1029/2019JB019313
	The Effect of Water on Ionic Conductivity in Olivine
	Fei H.; Druzhbin D.; Katsura T.
发表日期	2020
ISSN	21699313
卷号	125 期号:3
英文摘要	High-temperature ionic conductivity in olivine single crystals has been measured in the [100], [010], and [001] crystallographic orientations as a function of pressure from 2 to 10 GPa, temperature from 1450 to 2180 K, and H2O content from 20 to 580 wt. ppm using multianvil presses with in situ impedance analyses. The experimental results yield an activation energy, activation volume, and H2O content exponent of 250–405 kJ/mol, 3.2–5.3 cm3/mol, and 1.3 ± 0.2, respectively, for the high-temperature ionic conduction regime. Olivine ionic conductivity has negative pressure and positive temperature dependences and is significantly enhanced by H2O incorporation. The [001] direction is more conductive than the [100] and [010] directions. The H2O-enhanced ionic conductivity may contribute significantly to the electrical conductivity profile in the asthenosphere, especially in the regions under relatively high-temperature and low-pressure conditions. © 2020. The Authors.
英文关键词	asthenosphere; ionic conductivity; olivine; water
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187896
作者单位	Bayerisches Geoinstitut, University of Bayreuth, Bayreuth, Germany
推荐引用方式 GB/T 7714	Fei H.,Druzhbin D.,Katsura T.. The Effect of Water on Ionic Conductivity in Olivine[J],2020,125(3).
APA	Fei H.,Druzhbin D.,&Katsura T..(2020).The Effect of Water on Ionic Conductivity in Olivine.Journal of Geophysical Research: Solid Earth,125(3).
MLA	Fei H.,et al."The Effect of Water on Ionic Conductivity in Olivine".Journal of Geophysical Research: Solid Earth 125.3(2020).