Superconductivity above 70 K in Ba-La-Cu oxide

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Chin. Phys.; (United States)

OSTI ID:6479224

Changgeng, Cui; Shanlin, Li; Jinxiang, Liu; Lie, Chen; Shuquan, Guo; Yeye, He

Last December Ba-La-Cu oxide was prepared and the temperature dependence of resistance was measured by the four-point method. Zero resistance temperatures are 53 K and 67 K for sample A and sample B, respectively. The results of resistance transition under 10 kbar show T/sub c/ (onset) to be 94 K for sample B. About two months later the mutual-inductance method was adopted to measure the ac magnetic susceptibility by using a new measuring system. The onsets of diamagnetism were 83 K and 79 K for sample A and B, respectively.

• Research Organization: Institute of Physics, Academia Sinica, Beijing
• OSTI ID: 6479224
• Journal Information: Chin. Phys.; (United States), Journal Name: Chin. Phys.; (United States) Vol. 9:1; ISSN CHPHD
• 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
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE