Experimental study of pressure dependence of electrical conductivity of olivine at high temperatures

Details Experimental study of pressure dependence of electrical conductivity of olivine at high temperatures Experimental study of pressure dependence of electrical conductivity of olivine at high temperatures

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pepi...57..291o&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 57, Issue 3-4, p. 291-303.

Physics

15

Scientific paper

The electrical conductivity of sintered polycrystalline olivines (Mg1 - x Fex)2SiO4 (x = 10, 28, 52, 76 and 100%) has been measured at high pressures (2.9-7.0 GPa) and high temperatures (900-1900 K). Measurements at constant temperature and various pressures show that electrical conductivity increases with pressure in the case of high Fe content, whereas it decreases in the case of low Fe content. The results are interpreted as being due to two competing conduction mechanisms: ionic and electronic, which have different pressure dependences.

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