A15 Nb/sub 3/(AlGe) superconductors prepared by transformation from liquid quenched body-centered cubic phase
Journal Article
·
· Appl. Phys. Lett.; (United States)
A supersaturated body-centered cubic (bcc) solid solution of Nb/sub 3/(Al/sub 1-x/Ge/sub x/) up to x = 0.3 has been prepared by the liquid quenching on a hot Cu substrate. The quenched materials are then transformed to the A15 structure by annealing above 800 /sup 0/C. Following the transformation, the critical temperature rises above 18 /sup 0/K. The A15 phase converted from the bcc phase has an extremely small grain size of a few hundred angstroms, resulting in a high critical current density J/sub c/ in high magnetic fields. J/sub c/ of 3.5 x 10/sup 5/ A/cm/sup 2/ at 4.2 /sup 0/K and 16 T has been achieved in the Nb/sub 3/(Al/sub 0.8/Ge/sub 0.2/) sample annealed at 850 /sup 0/C for 7 h.
- Research Organization:
- National Research Institute for Metals, 1-2-1, Sengen, Sakura-mura, Niihari-gun, Ibaraki 305, Japan
- OSTI ID:
- 5228449
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 41:2; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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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
ANNEALING
BCC LATTICES
COPPER
CRITICAL CURRENT
CRITICAL TEMPERATURE
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
CURRENT DENSITY
CURRENTS
DATA
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GERMANIUM ALLOYS
GRAIN SIZE
HEAT TREATMENTS
INFORMATION
LIQUIDS
MAGNETIC FIELDS
METALS
MICROSTRUCTURE
MIXTURES
NIOBIUM ALLOYS
NUMERICAL DATA
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUANTITY RATIO
QUENCHING
SIZE
SOLID SOLUTIONS
SOLUTIONS
SUBSTRATES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
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
ANNEALING
BCC LATTICES
COPPER
CRITICAL CURRENT
CRITICAL TEMPERATURE
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
CURRENT DENSITY
CURRENTS
DATA
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GERMANIUM ALLOYS
GRAIN SIZE
HEAT TREATMENTS
INFORMATION
LIQUIDS
MAGNETIC FIELDS
METALS
MICROSTRUCTURE
MIXTURES
NIOBIUM ALLOYS
NUMERICAL DATA
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUANTITY RATIO
QUENCHING
SIZE
SOLID SOLUTIONS
SOLUTIONS
SUBSTRATES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
TRANSITION TEMPERATURE