Synthesis and study of the electrical conductive properties of Cs2Fe2TiO16 in various gas atmospheres

Author:

Rogova D A,Yu Sinel’shchikova O,Besprozvannykh N V,Morozov N A

Abstract

Abstract In this work, titanate Cs2Fe2Ti6O16 with a hollandite-type structure was synthesized by solid-phase synthesis. The electrical conductivity of the obtained ceramics was investigated in the temperature range from 25 to 800 °C in air and in the presence of an argon-hydrogen mixture (3% H2). It was found that the electrical conductivity of the compound under consideration depends on the composition of the atmosphere — the activation energy of conduction changes (0.57 eV in air and 0.91 eV in the presence of hydrogen). The volumetric and grain-boundary contributions to the total resistance of the sample in the gases under consideration are separated by impedance spectroscopy at a temperature of 800 °C.

Publisher

IOP Publishing

Subject

General Physics and Astronomy

Reference12 articles.

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4. Kinetics and mechanism of the formation of hollandites in the BaO(Cs2O)-Al2O3-TiO2 system from initial mixtures prepared by different methods;Grigor’eva;Glass Phys. Chem.,2007

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