CaSiO3 Perovskite May Cause Electrical Conductivity Jump in the Topmost Lower Mantle

doi:10.1002/2017GL075070

GSTDTAP > 气候变化

DOI	10.1002/2017GL075070
	CaSiO3 Perovskite May Cause Electrical Conductivity Jump in the Topmost Lower Mantle
	Fei, Hongzhan 1,2; Huang, Rong 1; Yang, Xiaozhi 3
	2017-10-28
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2017
卷号	44 期号:20
文章类型	Article
语种	英语
国家	Germany; Japan; Peoples R China
英文摘要	The electrical conductivity of CaSiO3 perovskite was measured in situ between 17-24 GPa and 1300-2000 K using a multianvil apparatus and Solartron 1260 Impedance/Gain-Phase Analyzer in the frequency range of 10(7)-1 Hz. The activation energies are 95-100 and 100-120 kJ/mol, and the activation volumes are 0.06 +/- 0.08 and -0.46 +/- 0.03 cm(3)/mol, at 1300-1800 and 1800-2000 K, respectively. Conduction under lower mantle conditions may be dominated by the ionic diffusion of oxygen. The electrical conductivity of CaSiO3 perovskite is higher than that of bridgmanite, majoritic garnet, and ferropericlase, the main constituents of the topmost lower mantle. Therefore, CaSiO3-perovsktie may significantly contribute to the electrical structure of the topmost lower mantle in spite of its relatively small volume proportion.
领域	气候变化
收录类别	SCI-E
WOS记录号	WOS:000416761600017
WOS关键词	MGSIO3 PEROVSKITE ; TRANSITION ZONE ; SILICATE PEROVSKITE ; (MG,FE)SIO3 PEROVSKITE ; SELF-DIFFUSION ; WATER-CONTENT ; HIGH-PRESSURE ; RINGWOODITE ; WADSLEYITE ; OLIVINE
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/25699
专题	气候变化
作者单位	1.Univ Bayreuth, Bayerisches Geoinst, Bayreuth, Germany; 2.Okayama Univ, Inst Study Earths Interior, Misasa, Tottori, Japan; 3.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Fei, Hongzhan,Huang, Rong,Yang, Xiaozhi. CaSiO3 Perovskite May Cause Electrical Conductivity Jump in the Topmost Lower Mantle[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(20).
APA	Fei, Hongzhan,Huang, Rong,&Yang, Xiaozhi.(2017).CaSiO3 Perovskite May Cause Electrical Conductivity Jump in the Topmost Lower Mantle.GEOPHYSICAL RESEARCH LETTERS,44(20).
MLA	Fei, Hongzhan,et al."CaSiO3 Perovskite May Cause Electrical Conductivity Jump in the Topmost Lower Mantle".GEOPHYSICAL RESEARCH LETTERS 44.20(2017).