ELECTRICAL CONDUCTIVITY AND PHASE TRANSITIONS IN KDP- AND ADP-POROUS GLASS NANOCOMPOSITES

Author:

SIERADZKI A.1,CIZMAN A.1,POPRAWSKI R.1,MARCINISZYN T.1,RYSIAKIEWICZ-PASEK E.1

Affiliation:

1. Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Abstract

The results of dielectric and dilatometric measurements of ADP and KDP-porous glass composites are presented. We stated on dilatometric studies that in ADP-porous glass nanocomposites the phase transition temperature decreases with decreasing of average size of pores. The negative jump of volume at phase transition region in ADP-porous glasses is observed. It was found that for KDP embedded into porous glasses nonmonotonous dependence of phase transition temperature on pores sizes occurs. The conductivity of ADP/KDP composites is significantly higher than in bulk crystals. The obtained values of activation energies are typical for proton movement.

Publisher

World Scientific Pub Co Pte Lt

Subject

Electrical and Electronic Engineering,Condensed Matter Physics,Ceramics and Composites,Electronic, Optical and Magnetic Materials

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