LASL Nb/sub 3/Ge conductor development. Fourteenth quarterly progress report, October 1-December 31, 1979
- comp.
The fourteenth quarterly report of the Los Alamos Scientific Laboratory program to develop Nb/sub 3/Ge as a superconductor with potential applications to superconducting power transmission lines covers the period Oct. 1-Dec. 31, 1979. Materials research aimed at improving the performance of Nb/sub 3/Ge tape conductor is described. A new ac-loss apparatus designed to measure hysteretic and ohmic losses in tape conductors was employed to study the losses in seventeen Nb/sub 3/Ge tape samples with currents induced around the circumference of the tapes. Tapes with Nb/sub 3/Ge thickness less than or equal to 3.0 ..mu..m have a continuous coating of Nb/sub 3/Ge around the edges and that such tapes exhibit low total losses (less than or equal to 10 ..mu..W/cm/sup 2/ at 500 rms A/cm). Thicker layers of Nb/sub 3/Ge do not maintain edge integrity and exhibit large ohmic losses caused by the full transport current flowing through the normal substrate. Work on Nb-Ge-Ga ternaries by chemical vapor deposition has concentrated on the preparation of reproducible deposits of A-15 Nb/sub 3/Ga.
- Research Organization:
- Los Alamos Scientific Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5478920
- Report Number(s):
- LA-8320-PR
- Country of Publication:
- United States
- Language:
- English
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GERMANIUM ALLOYS
INTERMETALLIC COMPOUNDS
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360104 -- Metals & Alloys-- Physical Properties
656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
ALLOYS
BETA-W LATTICES
BINARY ALLOY SYSTEMS
CABLES
CONDUCTOR DEVICES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRIC CABLES
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
GERMANIUM ALLOYS
INTERMETALLIC COMPOUNDS
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
PHYSICAL PROPERTIES
RESEARCH PROGRAMS
SUPERCONDUCTING CABLES
SUPERCONDUCTIVITY