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DOI | 10.1002/2017GL075070 |
CaSiO3 Perovskite May Cause Electrical Conductivity Jump in the Topmost Lower Mantle | |
Fei, Hongzhan1,2; Huang, Rong1; Yang, Xiaozhi3 | |
2017-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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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). |
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