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Electrical conductivity of ice VII.


ABSTRACT: It was discovered that a peak appears near a pressure of Pc = 10 GPa in the electrical conductivity of ice VII as measured through impedance spectroscopy in a diamond anvil cell (DAC) during the process of compression from 2 GPa to 40 GPa at room temperature. The activation energy for the conductivity measured in the cooling/heating process between 278 K and 303 K reached a minimum near Pc. Theoretical modelling and molecular dynamics simulations suggest that the origin of this unique peak is the transition of the major charge carriers from the rotational defects to the ionic defects.

SUBMITTER: Okada T 

PROVIDER: S-EPMC4105784 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

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