Title :
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.
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;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38370
