Comparison of the effect of impurities with different structural organization on the electrical properties of a frozen moisture-containing dispersed system
DOI:
https://doi.org/10.33910/2687-153X-2025-6-4-160-169Keywords:
water-containing dispersed system, specific electrical conductivity, ice, dissociating impurities, activation energy, relaxation timeAbstract
This article presents the results of experimental studies into the frequency dependences relating to the specific electrical conductivity of frozen water-containing dispersed systems. The focus is on real Arctic soil models in which ice with dissociating impurities of acids and non-dissociating impurities of saccharides acts as a dispersed phase. The studies were conducted at temperatures from 130 to 270 K and the frequency of the external electric field from 25 Hz to 1 MHz. A frozen dispersed system with impurities of orthophosphoric, sulfuric, nitric acids, fructose, and sucrose is examined for static and high-frequency conductivity, relaxation time, and orientation and ionic defect conductivity based on the Debye equation, the Jaccard model, and the theory of ionic thermal polarization. Comparison of how effectively impurities affect the specific electrical conductivity of a frozen dispersed system is given. A model of frozen water-containing systems is proposed to explain the electrical properties of pure systems and systems with impurities.
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