Influence of isotopic substitution on metal--insulator transitions in vanadium oxides

Journal Article · Thu Feb 01 00:00:00 EST 1979 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:5953907

Ovchinnikov, S G

A band theory of the metal--insulator phase transition is used to explain qualitatively the isotopic effect observed recently in VO/sub 2/, V/sub 3/O/sub 5/, and V/sub 2/O/sub 3/. The results suggest that there should be no isotopic shift of the Neel temperature and that a new phase (paramagnetic insulator) should appear in V/sub 2/O/sub 3/. A shift of the triple point is predicted for the phase diagram of VO/sub 2/ crystals doped with trivalent ions. The results also suggest the possibility of stabilization of metastable phases in pure VO/sub 2/ by isotopic substitution.

• Research Organization: L. V. Kirenski Institute of Physics, Siberian Branch of the Academy of Sciences of the USSR, Krasnoyarsk
• OSTI ID: 5953907
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Vol. 21:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
VANADIUM OXIDES
NEEL TEMPERATURE
PHASE TRANSFORMATIONS
ISOTOPE EFFECTS
PHASE DIAGRAMS
CHALCOGENIDES
DIAGRAMS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VANADIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies