Synthesis and superconducting properties of Y(Ba sub 1 minus y La sub y ) sub 2 Cu sub 4 O sub 8 and (Y sub 1 minus x Ca sub x )(Ba sub 1 minus y La sub y ) sub 2 Cu sub 4 O sub 8
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13, Shinonome 1-chome, Koto-ku, Tokyo (Japan)
We have synthesized single-phase Y(Ba{sub 1{minus}{ital y}}La{sub {ital y}}){sub 2}Cu{sub 4}O{sub 8} and (Y{sub 1{minus}{ital x}}Ca{sub {ital x}})(Ba{sub 0.9}La{sub 0.1}){sub 2}Cu{sub 4}O{sub 8} ceramics (0{le}{ital x}{le}0.1, 0{le}{ital y}{le}0.1) by means of high-oxygen-pressure sintering using an O{sub 2} hot isostatic press. It was revealed by powder x-ray diffraction that Ca and La were successfully substituted for Y and Ba, respectively. The superconducting properties of the ceramics were characterized by electrical resistivity and magnetic susceptibility. The superconducting critical temperature tended to be enhanced by Ca doping and deteriorated by La doping. This tendency may be explained by the idea of carrier concentration control.
- OSTI ID:
- 6193718
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:13; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Fri Jun 01 00:00:00 EDT 1990
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CERAMICS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
HIGH-TC SUPERCONDUCTORS
HOLES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CERAMICS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
HIGH-TC SUPERCONDUCTORS
HOLES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES