The influence of oxygen activity on T, T prime , and T* phase stabilities in (La,RE) sub 2 CuO sub 4 systems
Journal Article
·
· Journal of Solid State Chemistry; (USA)
- IBM Research Div., Yorktown Heights, NY (USA)
The effect of oxygen activity on the formation of (La,RE){sub 2}CuO{sub 4} (RE = rare earth) solid-solutions has been investigated. Compositions from the (La,Nd){sub 2}CuO{sub 4} and (La,Dy,M){sub 2}CuO{sub 4} (M = Ce, Th) systems, for example, can be prepared in either the T and T{prime} or T* and T{prime} structure types, respectively, at different oxygen contents but identical cation stoichiometries, thereby considerably extending the stability field of each structure. These results in part explain some of the differences in several published equilibrium phase diagrams for the (La,Nd){sub 2}CuO{sub 4} system.
- OSTI ID:
- 6290498
- Journal Information:
- Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 88:2; ISSN JSSCB; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER COMPOUNDS
CUPRATES
DATA
DIAGRAMS
DISPERSIONS
DYSPROSIUM
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
LANTHANUM
METALS
MIXTURES
NEODYMIUM
NUMERICAL DATA
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STABILITY
PHYSICAL PROPERTIES
RARE EARTHS
SOLID SOLUTIONS
SOLUTIONS
STABILITY
STOICHIOMETRY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER COMPOUNDS
CUPRATES
DATA
DIAGRAMS
DISPERSIONS
DYSPROSIUM
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
LANTHANUM
METALS
MIXTURES
NEODYMIUM
NUMERICAL DATA
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STABILITY
PHYSICAL PROPERTIES
RARE EARTHS
SOLID SOLUTIONS
SOLUTIONS
STABILITY
STOICHIOMETRY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS