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Electrical conductivity measurement of fayalite under shock compression up to 56 GPa

Mashimo, Tsutomu and Kondo, Ken-ichi and Sawaoka, Akira and Syono, Yasuhiko and Takei, Humihiko and Ahrens, Thomas J. (1980) Electrical conductivity measurement of fayalite under shock compression up to 56 GPa. Journal of Geophysical Research: Solid Earth, 85 (B4). pp. 1876-1881. ISSN 0148-0227. doi:10.1029/jb085ib04p01876.

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The electrical conductivity measurements of single‐crystal fayalite are performed under shock wave compression in the pressure range 19.5–56 GPa. The electrical conductivity under shock compression increases by a factor of more than 10^(10) from 0 to 40 GPa. Over the range 19.5–42 GPa the specific conductivity σ can be closely described by log_(10)σ (S/m) = −4.65 + 0.15P (GPa). The conductivity versus pressure relation at room temperature is calculated by using measured values of the activation energy to correct the high‐temperature shock data to room temperature. After the effect of temperature is removed, the increase in conductivity with pressure approximately agrees with that measured under static pressure using a diamond anvil cell by Mao and Bell. Above pressures of ∼42 GPa the conductivity remains at a relatively high level of ∼100 S/m from 40 to 55 GPa.

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Additional Information:© 1980 American Geophysical Union. Paper number 80B0014. Received December 20, 1978; revised April 23, 1979; accepted January 4, 1980. The authors appreciate the interest and encouragement proffered by S. Saito and Y. Nakagawa in carrying out this research. They are indebted to T. Goto for helpful discussions. The work was partially supported under the Japan-U. S. Cooperative Science Program: Y.S. and T.J.A. are grateful for the support from the Japan Society for the Promotion of Science (grant 4R 032) and U.S. National Science Foundation (grants DES 75-15006 and FJ 4035). Contribution 3056, Division of Geological and Planetary Sciences, California Institute of Technology.
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Japan Society for the Promotion of Science (JSPS)4R 032
NSFDES 75-15006
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Caltech Division of Geological and Planetary Sciences3056
Issue or Number:B4
Record Number:CaltechAUTHORS:20181219-075122266
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Official Citation:Mashimo, T., K.‐I. Kondo, A. Sawaoka, Y. Syono, H. Takei, and T. J. Ahrens (1980), Electrical conductivity measurement of fayalite under shock compression up to 56 GPa, J. Geophys. Res., 85(B4), 1876–1881, doi:10.1029/JB085iB04p01876
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91902
Deposited By: Tony Diaz
Deposited On:19 Dec 2018 17:52
Last Modified:16 Nov 2021 03:45

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