Complex research of vanadium dioxide in the homoginuity field

The complex research results of vanadium dioxide VÜ2±x obtained with X-ray analysis method, a method of vacuum adiabatic calorimeter and Faraday method are discussed. The samples temperature dependences of electrical resistivity, heat capacity, and also magnetic susceptibility are presented and they...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 944; no. 1; pp. 12115 - 12119
Main Authors Surikov, Vad I, Semenyuk, N A, Surikov, Val I, Kuznetsova, Y V, Pavlovskaya, O Y
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2018
Subjects
Debye temperature
Magnetic permeability
Magnetic properties
Oxygen content
Phase transitions
Physics
Temperature
Temperature sensors
Thermophysical properties
Vanadium dioxide
X ray analysis
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Summary:The complex research results of vanadium dioxide VÜ2±x obtained with X-ray analysis method, a method of vacuum adiabatic calorimeter and Faraday method are discussed. The samples temperature dependences of electrical resistivity, heat capacity, and also magnetic susceptibility are presented and they prove that these characteristics jump abruptly in the phase transition area. Thermophysical, electrical, magnetic properties of vanadium dioxide are established to vary with the oxygen content in the samples. Values of Debye characteristic temperatures θD for samples VO2±x determined at temperature 150 K are presented. Values of entropy change as an amount of electronic and phonon components at phase transition were calculated. The results obtained allow to consider the phase transition of a metal semiconductor as a Mott-Peierls transition, and also to use vanadium dioxide in temperature sensors manufacture.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/944/1/012115