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This article is cited in 8 scientific papers (total in 8 papers)
CONDENSED MATTER
Pressure dependence of the electrical properties of ice
M. I. Ryzhkina, I. A. Ryzhkina, A. M. Kashinb, V. V. Sinitsynb a Institute of Solid State Physics, Russian Academy of Sciences,
Chernogolovka, Moscow region, 142432 Russia
b InEnergy Company Group, Moscow, 111524 Russia
Abstract:
The pressure dependence of the proton conductivity of water ice is studied theoretically. It is shown that the decrease in the hydrogen bond length leads to the decrease in the formation energy of ionic defects and to the increase in the formation energy of bond defects. As a result, the partial conductivity of ionic defects, which determines the static conductivity of ice, increases, while the partial conductivity of bond defects, which determines the high-frequency conductivity of ice, decreases. At a certain pressure, a crossover of majority and minority carriers occurs, and the partial conductivities of ionic and bond defects become equal, while the static conductivity of ice reaches a maximum, and the permittivity of ice reaches a minimum. At the further pressure increase, the static conductivity of ice is determined by the partial conductivity of bond defects and decreases, while the high-frequency conductivity is determined by the partial conductivity of ionic defects and increases. The pressure at which the crossover occurs, as well as the maximum proton conductivity and the minimum permittivity, is estimated, and the comparison with experimental results is discussed.
Received: 04.09.2020 Revised: 20.09.2020 Accepted: 28.09.2020
Citation:
M. I. Ryzhkin, I. A. Ryzhkin, A. M. Kashin, V. V. Sinitsyn, “Pressure dependence of the electrical properties of ice”, Pis'ma v Zh. Èksper. Teoret. Fiz., 112:8 (2020), 531–538; JETP Letters, 112:8 (2020), 498–504
Linking options:
https://www.mathnet.ru/eng/jetpl6280 https://www.mathnet.ru/eng/jetpl/v112/i8/p531
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