Frequency dependent electrical properties of polycrystalline olivine compacts

J. J. Roberts; James Tyburczy

doi:10.1029/91jb01574

Frequency dependent electrical properties of polycrystalline olivine compacts

J. J. Roberts, James Tyburczy

CLAS-NS: Earth and Space Exploration, School of (SESE)

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120 Scopus citations

Abstract

The complex electrical properties of polycrystalline San Carlos olivine compacts were measured over the range of frequency 10^-4-10⁴ Hz from 800° to 1400°C under controlled oxygen fugacity. The impedance data display a strong frequency dependence that is evidenced most clearly when the results are displayed in the complex impedance plane. A parameterized model of the frequency dependent electrical response using equivalent electrical circuits is presented. Two distinct conduction mechanisms of the sample are observed: grain interior and grain boundary conduction. Each occurs over a different range of frequency. -from Authors

Original language	English (US)
Pages (from-to)	16,205-16,222
Journal	Journal of geophysical research
Volume	96
Issue number	B10
DOIs	https://doi.org/10.1029/91jb01574
State	Published - Jan 1 1991

ASJC Scopus subject areas

Geophysics
Forestry
Oceanography
Aquatic Science
Ecology
Water Science and Technology
Soil Science
Geochemistry and Petrology
Earth-Surface Processes
Atmospheric Science
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science
Palaeontology

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AB - The complex electrical properties of polycrystalline San Carlos olivine compacts were measured over the range of frequency 10-4-104 Hz from 800° to 1400°C under controlled oxygen fugacity. The impedance data display a strong frequency dependence that is evidenced most clearly when the results are displayed in the complex impedance plane. A parameterized model of the frequency dependent electrical response using equivalent electrical circuits is presented. Two distinct conduction mechanisms of the sample are observed: grain interior and grain boundary conduction. Each occurs over a different range of frequency. -from Authors

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Frequency dependent electrical properties of polycrystalline olivine compacts

Abstract

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