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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 · · Inorg. Mater. (Engl. Transl.); (United States)
OSTI ID:6093914
; ;
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), Journal Name: Inorg. Mater. (Engl. Transl.); (United States) Vol. 23:11; ISSN INOMA
Country of Publication:
United States
Language:
English

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Related Subjects

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