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Voltage-current Characteristics of Vanadium Dioxide Based Ceramics by A.I. Ivon; V.R. Kolbunov; I.M. Chernenko is a Materials Science article available to read on EtoBox.

What is Voltage-current Characteristics of Vanadium Dioxide Based Ceramics about?

Voltage-current characteristics of VO 2 and V 2 O 5 -P 2 O 5 glasses based ceramics with an addition of copper has been studied. The voltage-current characteristics are of S-type and have behaviour, which is typical for materials on the basis of vanadium dioxide. At some voltage the switching takes place and in a ceramic sample is formed the channel of electrical current. The VO 2 crystallites in this channel are in a metallic phase. The analytical expression for a voltage-current characteristic of a ceramic sample with the cylindrical channel of electrical current is obtained. The effective electrical conductivity and effective thermal conduction of vanadium dioxide based ceramics are increasing, the switching voltage is decreasing at increase of the content of copper additive. The probable reason of that is increase of amount of electrical and thermal bonds between VO 2 crystal grains through inclusions of copper, and also the decrease of a porosity of ceramics.

Who reads Voltage-current Characteristics of Vanadium Dioxide Based Ceramics?

Author

A.I. Ivon; V.R. Kolbunov; I.M. Chernenko

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0955-2219)

Published

2003

Language

EN

Field

Materials Science (Physical Sciences)