Electronic structure and metal--insulator phase transition in structurally disordered vanadium dioxide

Journal Article · Tue Jan 01 00:00:00 EST 1980 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:5469874

Mokerov, V G; Begishev, A R; Ignat'ev, A S

A study was made of the influence of structural disorder created by ion bombardment on the temperature dependence of the electrical conductivity sigma and spectral dependence of the absorption coefficient ..cap alpha..(h..omega..) of VO/sub 2/. The results confirmed that the metal--nonmetal transition occurred in a wide range of structural disorder and that the disorder increased the temperature range of the transition ..delta..T/sub t/ and reduced the effective temperature T/sub t//sup eff/. The disorder also reduced the changes in sigma and ..cap alpha.. associated with the phase transition and probably reduced the difference between the lattice parameters in the two phases. It was found that the disorder altered the profile of the ..cap alpha..(h..omega..) band corresponding to the fundamental absorption edge at temperatures T

• OSTI ID: 5469874
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Vol. 22:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
VANADIUM OXIDES
ELECTRONIC STRUCTURE
PHASE TRANSFORMATIONS
ABSORPTION SPECTRA
ELECTRIC CONDUCTIVITY
PHYSICAL RADIATION EFFECTS
CHALCOGENIDES
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATION EFFECTS
SPECTRA
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies