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Electrophysical properties of polyalkaline oxide tungsten bronze powders

Abstract

Electrophysical properties of polyalkaline oxide tungsten bronze powders

Drobasheva T.I., Ratoropov S.B.

Incoming article date: 25.04.2016

The data of experimental research of electrical conductivity and thermoelectric power of superfine powder of nonstoichiometric polyalkaline oxygen bronzes Mx'My''WO3 was established. Electrical conductivity of tungsten bronzes in thermocycles in 295-745K (vacuum) was studied. It will be observed that the bronzes after thermotreatment are semiconductors of n-type. Also the rise of electrical conductivity of powdery sodium, potassium bronzes in tens time was found. In their conditions the maximum value of electrical conductivity had bronze Na0.7WO3. Characteristic properties of mutual influence of nonstoichiometry of tungsten suboxides and chemical compositions, electrophysical properties of polyalkaline tungsten bronzes was established.

Keywords: electrical conductivity, polyalkaline oxide tungsten bronzes powder, thermoelectric power, nonstoichiometry, tungsten suboxide