Superconductivity of ductile Ti-Nb-Si amorphous alloys
Amorphous superconducting alloys with high strength and good ductility have been found in rapidly quenched alloys of the Ti-Nb-Si system. Continuous ribbons of these alloys were produced about 2 mm wide and 0.04 mm thick using a modified single roller quenching apparatus. The silicon content in the amorphous alloys was limited to the range between about 13 and 21 at. % and the niobium content was in the range 0--43 at. %. The alloys containing more than 10 at. % niobium showed a superconducting transition above the liquid-helium temperature (4.2 K). The transition temperature T/sub c/ increased with increasing niobium content or with decreasing silicon content. The highest value obtained was 5.1 K for Ti/sub 45/Nb/sub 40/Si/sub 15/. The upper critical magnetic field H/sub c/2 and the critical current density J/sub c/ were of the order of 1.6 x 10/sup 6/ A/m at 4.2 K and 300 A/cm/sup 2/ at zero applied field and 4.2 K.
- Research Organization:
- The Research Institute for Iron, Steel and Other Metals, Tohoku University, Sendai 980, Japan.
- OSTI ID:
- 5076495
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 51:10; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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
AMORPHOUS STATE
CRITICAL CURRENT
CRITICAL FIELD
CURRENT DENSITY
CURRENTS
DATA
DUCTILITY
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
FABRICATION
INFORMATION
MAGNETIC FIELDS
MATERIALS WORKING
MECHANICAL PROPERTIES
NIOBIUM ALLOYS
PHYSICAL PROPERTIES
QUANTITY RATIO
QUENCHING
ROLLING
SILICON ALLOYS
SUPERCONDUCTIVITY
TENSILE PROPERTIES
THERMODYNAMIC PROPERTIES
TITANIUM ALLOYS
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE