Abstract
The impedance spectra of single and polycrystalline olivine display two and three impedance arcs, respectively. Impedance spectra of single crystal olivine, polycrystalline olivine compacts, and natural dunite are compared to deduce the causes of the different impedance arcs. Variation of sample dimensions and use of three- and four-electrode configurations aid in the interpretation. The resistance of the two highest frequency mechanisms varies directly with the length to area ratio (l/A) of the sample. Experiments using the four-electrode configuration confirm that the lowest frequency impedance arc is caused by processes at the sample-electrode interface. In both single and polycrystalline samples the highest frequency mechanism is interpreted as bulk (grain interior) conduction, and the lowest frequency mechanism is attributed to sample-electrode interface effects. In the polycrystalline samples, the intermediate frequency mechanism is interpreted as the grain boundary conduction mechanism. The resistances of the grain interior and grain boundary mechanisms add in a series manner.
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References
Abelard P, Baumard JF (1980) Electric and dielectric properties of forsterite between 400 and 900° C. Phys Earth Planet Inter 23:98–102
Basu AR, Murthy VR (1977) Ancient lithospheric lherzolitic xenolith in alkali basalt from Baja California. Earth Planet Sci Lett 35:239–246
Bauerle JE (1969) Study of solid electrolyte polarization by a complex admittance method. J Phys Chem Solid 30:2657–2670
Chu SH, Seitz MA (1978) The ac electrical behavior of polycrystalline ZrO2-CaO. J Sol St Chem 23:297–314
Constable SC, Duba AG (1990) The electrical conductivity of olivine, a dunite and the mantle. J Geophys Res 95:6967–6978
Hirsch LM, Shankland TJ (1991) Quantitative olivine defect chemical model: Insights on electrical conduction, diffusion, and the role of Fe impurities. Geophys J Int (submitted)
Hirsch LM, Shankland TJ, Duba AG (1991) Electrical conduction and mobility in Fe-bearing olivine. Geophys J Int (submitted)
Huebner JS, Voight DE (1988) Electrical conductivity of diopside: Evidence for oxygen vacancies. Am Mineral 73:1235–1254
Kingery WD, Bowen HK, Uhlmann DR (1976) Introduction to Ceramics. Wiley, New York
Kuszyk JA, Bradt RC (1973) Influence of grain size on effects of thermal expansion anisotropy in MgTi2O5. J Am Ceram Soc 56:420–423
Lockner DA, Byerlee JD (1985) Complex resistivity measurements of confined rock. J Geophys Res 90:7837–7847
Macdonald JR, Schoonman J, Lehnen AP (1982) The applicability and power of complex nonlinear least squares for the analysis of impedance and admittance data. J Electroanal Chem 131:77–95
Macdonald JR (1985) Generalizations of “universal dielectric response” and a general distribution-of-activation-energies model for dielectric and conducting systems. J Appl Phys 58:1971–1978
Olhoeft GR (1985) Low frequency electrical properties. Geophysics 50:2492–2503
Raistrick ID (1987) The electrical analogs of physical and chemical processes. In: Macdonald JR (ed) Impedance Spectroscopy. Wiley, New York, pp 27–84
Roberts JJ, Tyburczy JA (1991) Frequency dependent electrical properties of polycrystalline olivine compacts. J Geophys Res 96:16205–16222
Sato H (1986) High temperature a.c. electrical properties of olivine single crystal with varying oxygen partial pressure: implications for the point defect chemistry. Phys Earth Planet Inter 41:269–282
Sato H, Manghnani MH, Lienert BR, Weiner AT (1986) Effects of electrode polarization on the electrical properties of partially molten rock. J Geophys Res 91:9325–9332
Schock RN, Duba AG, Shankland TJ (1989) Electrical conduction in olivine. J Geophys Res 94:5829–5839
Tanaka J, Baumard J, Abelard P (1987) Nonlinear electrical properties of grain boundaries in an oxygen-ion conductor (CeO2 · Y2O3). J Am Ceram Soc 70:637–643
Tuller HL (1985) Electrical conduction in ceramics: Toward improved defect interpretation. In Schock RN (ed) Point Defects in Minerals, Geophysical Monograph 31:47–68, American Geophysical Union, Washington, D.C.
Tyburczy JA, Roberts JJ (1990) Low frequency electrical response of polycrystalline olivine compacts: Grain boundary transport. Geophys Res Lett 17:1985–1988
vanDijk T, Burggraaf AJ (1981) Grain boundary effects on ionic conductivity in ceramic Gd x Zr1-xO2-(x/2) solid solutions. Phys Status Solidi 63:229–240
Verkerk MJ, Winnubst AJA, Burggraaf AJ (1982a) Effect of impurities on sintering and conductivity of yttria-stabilized zirconia. J Mat Sci 17:3113–3122
Verkerk MJ, Middelhuis BJ, Burggraaf AJ (1982b) Effect of grain boundaries on the conductivity of high-purity ZrO2-Y2O3 ceramics. Solid State Ion 6:159–170
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Roberts, J.J., Tyburczy, J.A. Impedance spectroscopy of single and polycrystalline olivine: Evidence for grain boundary transport. Phys Chem Minerals 20, 19–26 (1993). https://doi.org/10.1007/BF00202246
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DOI: https://doi.org/10.1007/BF00202246