Temperature and pressure dependence of electrical conductivity in synthetic anorthite

doi:10.1016/j.ssi.2015.04.008

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Temperature and pressure dependence of electrical conductivity in synthetic anorthite
	Hu, Haiying 1,2; Dai, Lidong 1; Li, Heping 1; Hui, Keshi 1,3; Li, Jia 1,3
刊名	SOLID STATE IONICS
	2015-08-01
卷号	276 页码:136-141
关键词	Anorthite Electrical conductivity Transport mechanism Diffusivity
DOI	10.1016/j.ssi.2015.04.008
文献子类	Article
英文摘要	Electrical conductivity measurements of synthetic anorthite were carried out as a function of pressure and temperature by a Solartron-1260 Impedance/Gain phase analyzer in a multi-anvil apparatus. The impedance spectroscopy was performed in a frequency range from 10-1 Hz to 106 Hz. The sample was synthesized at 1673 K in a high temperature furnace. Our experimental results show that (1) a dramatic increase in electrical conductivity with increasing temperature and a slightly decrease in conductivity with increasing pressure at constant temperature, however, the effect of pressure on the conductivity is less pronounced than that of temperature; (2) the activation enthalpy linearly increases with increasing pressure (1.86-1.91 eV) reflecting the mobility of Ca2(+) decreases as the anorthite framework becomes more compressed; (3) the activation energy at atmospheric pressure and activation volume are 1.83 eV and 2.39 cm(3)/mol, respectively; (4) According to these Arrhenius parameters, it is proposed that the possible dominant mechanism of the charge transport in anorthite under experimental conditions is the hopping of Ca2(+) from one near aluminum oxygen site to another; (4) the diffusion coefficient of calcium was calculated from the present conductivity data using Nernst-Einstein equation, and compared with previous experimental results. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词	LOWER-MANTLE CONDITIONS ; POLYCRYSTALLINE OLIVINE ; LABORATORY MEASUREMENTS ; IMPEDANCE SPECTROSCOPY ; CATION DIFFUSION ; ALKALI FELDSPAR ; ORTHO-PYROXENE ; WATER-CONTENT ; GLASSES ; ALBITE
WOS研究方向	Chemistry ; Physics
语种	英语
WOS记录号	WOS:000356192900017
资助机构	"135" Program of Institute of Geochemistry of CAS ; "135" Program of Institute of Geochemistry of CAS ; Hundred talents program of CAS ; Hundred talents program of CAS ; Open Foundation of Institute of Geology and Geophysics of CAS ; Open Foundation of Institute of Geology and Geophysics of CAS ; National Natural Science Foundation of China(41304068 ; National Natural Science Foundation of China(41304068 ; 41474078 ; 41474078 ; 41174079) ; 41174079) ; "135" Program of Institute of Geochemistry of CAS ; "135" Program of Institute of Geochemistry of CAS ; Hundred talents program of CAS ; Hundred talents program of CAS ; Open Foundation of Institute of Geology and Geophysics of CAS ; Open Foundation of Institute of Geology and Geophysics of CAS ; National Natural Science Foundation of China(41304068 ; National Natural Science Foundation of China(41304068 ; 41474078 ; 41474078 ; 41174079) ; 41174079)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62519]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
作者单位	1.Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths In, Guiyang 550002, Guizhou, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Hu, Haiying,Dai, Lidong,Li, Heping,et al. Temperature and pressure dependence of electrical conductivity in synthetic anorthite[J]. SOLID STATE IONICS,2015,276:136-141.
APA	Hu, Haiying,Dai, Lidong,Li, Heping,Hui, Keshi,&Li, Jia.(2015).Temperature and pressure dependence of electrical conductivity in synthetic anorthite.SOLID STATE IONICS,276,136-141.
MLA	Hu, Haiying,et al."Temperature and pressure dependence of electrical conductivity in synthetic anorthite".SOLID STATE IONICS 276(2015):136-141.