Anomalous high permittivity in salty ice-a new dielectric phenomenon

Author

Zhong, Li-Rong ; Xu, Changsheng ; Qiu, Charlie

Author_Institution

Dept. of Electr. Eng., Xi´an Jiaotong Univ.

fYear

1988

fDate

12-16 Sep 1988

Firstpage

206

Abstract

The dielectric properties of salty ice including some one-valence alkali halides have been studied in the temperature range from -5°C to -60°C. It has been discovered that the salty ice has a very high permittivity, which can be over ten times higher than that for ordinary ice at the same conditions. The permittivity can be over 1000 and depends on the saline ionic concentration and radius of ion in salty ice. The authors conclude that the anomalous high-permittivity phenomenon is produced by the additional polarization effect in salty ice. The mechanism is due to thermionic polarization by the action of a high effective electric field

Keywords

dielectric polarisation; dielectric properties of solids; ice; permittivity; -5 to -60 degC; dielectric properties; high effective electric field; high permittivity; ion radius; one-valence alkali halides; saline ionic concentration; salty ice; thermionic polarization; Dielectric losses; Dielectric measurements; Frequency dependence; Ice; Impurities; Permittivity measurement; Polarization; Temperature dependence; Temperature distribution; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of

Conference_Location

Beijing

Type

conf

DOI

10.1109/ICPADM.1988.38370

Filename

38370