Preparation and properties of the solid solutions La/sub 0. 7/Sr/sub 0. 3/Co/sub 1-y/Cr/sub y/O/sub 3/ (0 less than or equal to y less than or equal to 1)

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

OSTI ID:6093914

Tolochko, S P; Kononyuk, I F; Ivashkevich, L S

In some complex oxide compounds with the perovskite structure, containing ions of two transition metals, the electrical conductivity is determined predominantly by the participation of heterovalent ions of only one of the transition metals and depends in a complicated manner on the composition. In this work the mutual effect of cobalt and chromium ions on the electrical conductivity and thermal expansion of perovskite solid solutions La/sub 0.7/Sr/sub 0.3/Co/sub 1-y/Cr/sub y/O/sub 3/ is studied. The coefficients of linear thermal expansion were determined using a quartz dilatometer. The electrical conductivity was measured by a four-probe method using dc current. THe coefficients of thermo-emf were determined relative to gold or silver with a temperature difference of 20-25 K at the ends of the sample.

• Research Organization: V.I. Lenin Belorussian State Univ. (USSR)
• OSTI ID: 6093914
• Journal Information: Inorg. Mater. (Engl. Transl.); (United States), Vol. 23:11; Other Information: Translated from Izv. Akad. Nauk SSSR, Neorg. Mater.; 23, No. 11, 1892-1896 (Nov 1987)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM OXIDES
ELECTRICAL PROPERTIES
COBALT OXIDES
LANTHANUM OXIDES
STRONTIUM OXIDES
CHROMIUM
COBALT
DENSITY
ELECTRIC CONDUCTIVITY
ELECTROMOTIVE FORCE
LATTICE PARAMETERS
METALLURGICAL EFFECTS
ORTHORHOMBIC LATTICES
P-TYPE CONDUCTORS
SINTERING
SOLID SOLUTIONS
SYNTHESIS
THERMAL EXPANSION
THERMOELECTRIC PROPERTIES
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHROMIUM COMPOUNDS
COBALT COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DISPERSIONS
ELEMENTS
EXPANSION
FABRICATION
LANTHANUM COMPOUNDS
MATERIALS
METALS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
SEMICONDUCTOR MATERIALS
SOLUTIONS
STRONTIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360204 - Ceramics
Cermets
& Refractories- Physical Properties