Electrical conductivity of ice VII

It was discovered that a peak appears near a pressure of P(c) = 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 conducti...

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Detalles Bibliográficos
Autores principales: Okada, Taku, Iitaka, Toshiaki, Yagi, Takehiko, Aoki, Katsutoshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4105784/
https://www.ncbi.nlm.nih.gov/pubmed/25047728
http://dx.doi.org/10.1038/srep05778
Descripción
Sumario:It was discovered that a peak appears near a pressure of P(c) = 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 P(c). 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.

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