Properties of V/sub 1-x/Cu/sub x/O/sub 2/ solid solutions (0 less than or equal to x less than or equal to 0. 04)

Journal Article · Tue Mar 01 00:00:00 EST 1988 · Inorg. Mater. (Engl. Transl.); (United States)

OSTI ID:6051608

Kellerman, D G; Gorshkov, V S; Belysheva, G M; Khodos, M Ya; Perelyaev, V A

V/sub 1-x/Cu/sub x/O/sub 2/ (0 less than or equal to x less than or equal to 0.04) solid solutions have been made and have been shown to be isostructural with pure vanadium dioxide for x less than or equal to 0.02. There is a semiconductor-metal transition in them, and the copper ions are redistributed for x > 0.02. Copper reduces the semiconductor-metal transition temperature and stabilizes the intermediate insulating phase. Susceptibility and voltammetry indicate that the copper in V/sub 1-x/Cu/sub x/O/sub 2/ indicates that paramagnetic centers are formed by breakage of some of the V/sup 4 +/ - V/sup 4 +/ bonds, with 4V/sup 4 +/ ..-->.. 3V/sup 5 +/ + Cu/sup +/ charge compensation. The number of paramagnetic centers is proportional to the copper concentration for x less than or equal to 0.02.

• Research Organization: Ural Scientific Center (USSR)
• OSTI ID: 6051608
• Journal Information: Inorg. Mater. (Engl. Transl.); (United States), Vol. 23:10; Other Information: Translated from Izv. Akad. Nauk SSSR, Neorg. Mater.; 23, No. 10, 1678-1682 (Oct 1987)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
PHYSICAL PROPERTIES
VANADIUM OXIDES
CRYSTAL DOPING
CRYSTAL-PHASE TRANSFORMATIONS
CURIE-WEISS LAW
ELECTRIC CONDUCTIVITY
ELECTRONIC STRUCTURE
IONIC CRYSTALS
LATTICE PARAMETERS
MAGNETIC MOMENTS
MAGNETIC SUSCEPTIBILITY
METALLURGICAL EFFECTS
METALS
PARAMAGNETISM
SEMICONDUCTOR MATERIALS
SOLID SOLUTIONS
TETRAGONAL LATTICES
TRANSITION TEMPERATURE
VALENCE
VOLTAMETRY
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DISPERSIONS
ELECTRICAL PROPERTIES
ELEMENTS
MAGNETIC PROPERTIES
MAGNETISM
MATERIALS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SOLUTIONS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies