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

Journal Article · Thu Feb 01 04:00:00 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), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 21:2; ISSN SPSSA
• Country of Publication: United States
• Language: English

Related Subjects

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