Production and electrical parameters of La /SUB 1-x/ Ca /SUB x/ Cr /SUB 1-y/ Ni /SUB y/ O/sub 3/ (x ranging from 0-0. 3; y ranging from 0-1)
This paper deals with the conditions for the formation of LaCr /SUB 1-y/ Ni /SUB y/ O/sub 3/, La /SUB 1-x/ Ca /SUB x/ CrO/sub 3/, and La /SUB 1-x/ Ca /SUB x/ Cr /SUB 1-y/ Ni /SUB y/ O/sub 3/ solid solutions and the electrical parameters of these. The initial materials were lanthanum, calcium, nickel, and chromium nitrates of pure or analytical grade. It is shown that partial replacement of lanthanum by calcium does not have any substantial effect on the electrical parameters of La /SUB 1-x/ Ca /SUB x/ Cr /SUB 1-y/ Ni /SUB y/ O/sub 3/ solid solutions for y = 0.2-0.6, but it increases the conductivity of La /SUB 1-x/ Ca /SUB x/ CrO/sub 3/ by three orders of magnitude as x varies from 0 to 0.3. The electrical parameters are virtually the same for lanthanum chromites containing calcium and strontium. The solubility of calcium in lanthanum chromite is reduced in the presence of nickel.
- Research Organization:
- Lenin Belorossian State Univ.
- OSTI ID:
- 7240976
- Journal Information:
- Inorg. Mater. (Engl. Transl.); (United States), Vol. 22:1
- Country of Publication:
- United States
- Language:
- English
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Preparation and electrical properties of solid solutions of La/sub 1-x/Ca/sub x/Cr/sub y/Co/sub 1-y/O/sub 3/ (0 less than or equal to x less than or equal to 0. 3; 0 < y less than or equal to 1)
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Related Subjects
CALCIUM OXIDES
THERMOELECTRIC PROPERTIES
CHROMIUM OXIDES
LANTHANUM OXIDES
NICKEL OXIDES
CRYSTALLIZATION
ELECTRIC CONDUCTIVITY
ELECTROMOTIVE FORCE
HEAT TREATMENTS
SINTERING
SOLID SOLUTIONS
SOLUBILITY
STRONTIUM OXIDES
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
CHROMIUM COMPOUNDS
COHERENT SCATTERING
DIFFRACTION
DISPERSIONS
ELECTRICAL PROPERTIES
FABRICATION
LANTHANUM COMPOUNDS
MIXTURES
NICKEL COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
SOLUTIONS
STRONTIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies