Critical current density of Y-Ba-Cu oxide superconductor prepared by a diffusion process

Conference · Wed Mar 01 04:00:00 EST 1989 · IEEE Trans. Magn.; (United States)

OSTI ID:6042323

Sadakata, N; Sugimoto, M; Kohno, O; Tachikawa, K

The formation of the YBa/sub 2/Cu/sub 3/O/sub 7-y/ layer has been investigated by a diffusion process as a basic research for high-T/sub c/ superconductor fabrication. The starting materials were Y/sub 2/BaCuO/sub 5/ and barium cuprate, unlike the ordinary sintering technique. A dense layer of YBa/sub 2/Cu/sub 3/O/sub 7-y/ was formed on Y/sub 2/BaCuO/sub 5/ substrate, and the starting barium cuprate layer was fully converted to the superconducting oxide. X-ray diffractometry revealed that the layer consisted of an orthorhombic crystal structure. The reacted specimens showed good superconductivity. A zero resistance of 91.5K and the critical current density of 1900A/cm/sup 2/ (77K, OT) were achieved in the layer. Preparation conditions and superconducting properties, particularly, Jc characteristics are investigated. The diffusion phenomena to form the YBa/sub 2/Cu/sub 3/O/sub 7-y/ phase by this diffusion process are also discussed.

• Research Organization: Tokyo Lab., Fujikura Ltd., 1-5-1, Kiba, Koto-ku, Tokyo (JP); Dept. of Materials Science, Takai Univ., 1117 Kita-Kaname, Hiratsuka, Kanagawa (JP)
• OSTI ID: 6042323
• Report Number(s): CONF-880812-
• Conference Information: Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: 25:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
656100 -- Condensed Matter Physics-- Superconductivity
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL STRUCTURE
CURRENT DENSITY
CURRENTS
DIFFRACTION
DIFFUSION
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRIC IMPEDANCE
ELECTRICAL PROPERTIES
FABRICATION
FILMS
IMPEDANCE
JUNCTIONS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
RESEARCH PROGRAMS
SCATTERING
SINTERING
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES