Transition temperature and upper critical field of superconducting V-Al/Cu-Ge composite tapes

Journal Article · Mon May 01 04:00:00 EDT 1978 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.90111· OSTI ID:5123117

Sekine, H; Togano, K; Tachikawa, K

Transition temperature T/sub c/ and upper critical field H/sub c/ were measured for the superconducting composite tapes made by the reaction between a V-Al core and a Cu-Ge matrix. It was found that T/sub c/ and H/sub c/, especially the latter, are significantly increased with increasing aluminum concentration in the vanadium core, reaching 12 K and 170 kOe (at 4.2 K) for the V--18 at.% Al/Cu--9 at.% Ge specimen. This enhancement appears to result from the formation of a V/sub 3/(Ge,Al) ternary A-15 compound layer.

• Research Organization: National Research Institute for Metals, 2-3-12 Nakameguro, Meguro-ku, Tokyo 153, Japan
• OSTI ID: 5123117
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 32:9; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ALUMINIUM ALLOYS
COMPOSITE MATERIALS
COPPER ALLOYS
CRITICAL FIELD
GERMANIUM ALLOYS
MAGNETIC FIELDS
PHYSICAL PROPERTIES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
TYPE-II SUPERCONDUCTORS
VANADIUM ALLOYS