Superconductivity at 90 K in a multiphase oxide of Y-Ba-Cu

Journal Article · Fri May 01 04:00:00 EDT 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.35.7115· OSTI ID:5923056

Tarascon, J M; Greene, L H; McKinnon, W R; Hull, G W

We have measured the resistance and dc susceptibility in a series of multiphase Y-M-Cu oxides, where M = Ca, Sr, and Ba. We find superconductivity in two of the Ba samples, of nominal composition Y/sub 2-//sub x/Ba/sub x/CuO/sub 4-//sub y/ with x = 0.20 and x = 0.25 For x = 0.25, the midpoint of the resistive transition is 91 K, the resistance has reached zero by 83 K, and the Meissner signal reaches 2% of that expected for an ideal bulk superconductor at low temperatures.

• Research Organization: Bell Communications Research, 331 Newman Springs Road, Red Bank, New Jersey 07701
• OSTI ID: 5923056
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 35:13; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DATA
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
INFORMATION
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES