Experimental measurement of the electrical conductivity of single crystal olivine at high temperature and high pressure under different oxygen fugacities
文献类型：期刊论文
| 作者 | Dai, LD; Li, HP; Liu, CG; Cui, TD; Shan, SM; Yang, CJ; Liu, QY; Deng, HM |
| 刊名 | Progress in natural science
 |
| 出版日期 | 2006-04-01 |
| 卷号 | 16期号:4页码:387-393 |
| 关键词 | Olivine High temperature and high pressure Electrical conductivity Oxygen fugacity Small polaron |
| ISSN号 | 1002-0071 |
| 通讯作者 | Li, hp() |
| 英文摘要 | At 1.0-4.0 gpa and 1123-1473 k and under oxygen fugacity-controlled conditions ( ni + nio, fe + fe3o4, fe + feo and mo+ moo2 buffers), a yj-3000t model six-anvil solid high-pressure apparatus and a sarltron-1260 impedance/gain-phase analyzer were employed to conduct an in situ measurement of the electrical conductivity of single crystal olivine. experimental results showed that: (1) within the range of experimentally selected frequencies (10(3)-10(6) hz), the electrical conductivity of the sample is of great dependence on the frequency; (2) with the rise of temperature ( t), the electrical conductivity (sigma) will increase, and the arrenhius linear relationship is established between ig sigma and 1/t; (3) under the control of oxygen buffer fe + fe3o4, with the rise of pressure, the electrical conductivity tends to decrease whereas the activation enthalpy and independent-of-temperature preexponential factor tend to increase, with the activation energy and activation volume of the sample estimated at ( 1.25 +/- 0.08) ev and (0.105 +/- 0.025) cm(3)/mol, respectively; (4) under given pressure and temperature conditions, the electrical conductivity tends to increase whereas the activation energy tends to decrease with increasing oxygen fugacity; and (5) the mechanism of electrical conduction of small polarons can provide insight into the behavior of electrical conduction of olivine under high pressure and high temperature. |
| WOS关键词 | SAN CARLOS OLIVINE ; IN-SITU CONTROL ; SILICATE PEROVSKITE ; FE-FEO ; MANTLE ; RINGWOODITE ; EQUILIBRIA |
| WOS研究方向 | Materials Science ; Science & Technology - Other Topics |
| WOS类目 | Materials Science, Multidisciplinary ; Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000237430000009 |
| 出版者 | TAYLOR & FRANCIS LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2379462 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li, HP |
| 作者单位 | 1.Chinese Acad Sci, Lab Earths Interior Mat & Fluid Geochem, Inst Geochem, Guiyang 550002, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China 4.Guizhou Univ, Guiyang 550004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, LD,Li, HP,Liu, CG,et al. Experimental measurement of the electrical conductivity of single crystal olivine at high temperature and high pressure under different oxygen fugacities[J]. Progress in natural science,2006,16(4):387-393. |
| APA | Dai, LD.,Li, HP.,Liu, CG.,Cui, TD.,Shan, SM.,...&Deng, HM.(2006).Experimental measurement of the electrical conductivity of single crystal olivine at high temperature and high pressure under different oxygen fugacities.Progress in natural science,16(4),387-393. |
| MLA | Dai, LD,et al."Experimental measurement of the electrical conductivity of single crystal olivine at high temperature and high pressure under different oxygen fugacities".Progress in natural science 16.4(2006):387-393. |
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来源：中国科学院大学
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