Electrophysical properties of the Rochelle salt dispersed in a porous dielectric matrix of type A zeolite

Abstract

Electrical conductivity, real part of dielectric permittivity and dielectric losses of a novel nanocomposite material obtained by the infiltration of a NaA zeolite matrix with Rochelle salt were studied in the frequency range from 100 Hz to 100 kHz. A low-temperature shift of the Curie point TC of the guest substance’s upper ferroelectric transition due to the influence of confined geometry was observed. It was shown that the kind of temperature dependence of the Rochelle salt’s electrical conductivity as well as the character of the dielectric losses’ frequency dependence change significantly when this ferroelectric is dispersed in the NaA zeolite.

Keywords

• ferroelectrics
• Rochelle salt
• permittivity
• dielectric losses
• electrical conductivity
• zeolite