Irreversible anomalies in the electrical properties of oxides with the tetragonal tungsten bronze structure

Autor:	Gurnikovskii, I. A., Bermus, A. G., Rudkovskaya, L. M., Bunina, O. A.
Zdroj:	Inorganic Materials; November 2000, Vol. 36 Issue: 11 p1133-1136, 4p
Abstrakt:	The anomalies in the electrical properties of (Pb,Sr,Ba)4Li2Nb10O30solid solutions were studied by measuring dielectric permittivity and electrical conductivity as functions of temperature and time (during isothermal holding). The anomalies were shown to occur in defect-rich ferroelectrics. Both the dielectric permittivity and conductivity vary exponentially with time during isothermal holding. The effects of heating rate and UV irradiation time are analyzed. The results can be accounted for in the framework of a fluctuation-cluster model.
Databáze:	Supplemental Index
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