Exponential contribution to the electric resistance of the superconducting compound Nb/sub 3/Al/sub 0. 75/Ge/sub 0. 25/ and the anomalous temperature dependence of its crystal-lattice parameter
Journal Article
·
· Sov. Phys. - JETP (Engl. Transl.); (United States)
OSTI ID:5389517
Results are presented of measurements of the temperature dependence of the electric resistance (61--300 K) and of the crystal-lattice parameter (70--310 K) of a high-temperature superconducting compound Nb/sub 3/Al/sub 0.75/Ge/sub 0.25/ with A15 lattice. It is shown that an important contribution to the resistance is made by scattering of electrons by phonons that correspond to the low-frequency peak of the density of states. The scattering can be expressed by a term exp(-T/sub 0//T), where T/sub 0/ = 117.0 +- 6.8 K. The temperature dependence of the thermal expansion coefficient is found to change abruptly at Tapprox.T/sub 0/. No lowering of the crystal-lattice symmetry of Nb/sub 3/Al/sub 0.75/Ge/sub 0.25/ is observed.
- Research Organization:
- Kharkov Physicotechnical Institute, USSR Academy of Sciences
- OSTI ID:
- 5389517
- Journal Information:
- Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 55:1; ISSN SPHJA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Exponential contribution to the electrical resistance and the anomalous temperature dependence of the crystal lattice parameter of superconducting compound Nb/sub 3/Al/sub 0. 75/Ge/sub 0. 25/
Superconductive tunneling into Nb$sub 3$(Al$sub 0$ $sub 75$Ge$sub 0$ $sub 25$)
High temperature resistive phase transition in A15 high temperature superconductors. [433/sup 0/K in Nb/sub 3/Sn; 485/sup 0/K in Nb/sub 3/Ge]
Journal Article
·
Tue Nov 30 23:00:00 EST 1982
· Sov. Phys. - Solid State (Engl. Transl.); (United States)
·
OSTI ID:6164187
Superconductive tunneling into Nb$sub 3$(Al$sub 0$ $sub 75$Ge$sub 0$ $sub 25$)
Journal Article
·
Sun Dec 16 23:00:00 EST 1973
· Phys. Lett., A, v. 46A, no. 3, pp. 201-202
·
OSTI ID:4335612
High temperature resistive phase transition in A15 high temperature superconductors. [433/sup 0/K in Nb/sub 3/Sn; 485/sup 0/K in Nb/sub 3/Ge]
Conference
·
Wed Dec 31 23:00:00 EST 1975
·
OSTI ID:7280272
Related Subjects
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ALUMINIUM ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
EXPANSION
GERMANIUM ALLOYS
LATTICE PARAMETERS
LOW TEMPERATURE
MEDIUM TEMPERATURE
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
SYMMETRY
TEMPERATURE DEPENDENCE
THERMAL EXPANSION
VERY LOW TEMPERATURE
360603 -- Materials-- Properties
656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ALUMINIUM ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
EXPANSION
GERMANIUM ALLOYS
LATTICE PARAMETERS
LOW TEMPERATURE
MEDIUM TEMPERATURE
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
SYMMETRY
TEMPERATURE DEPENDENCE
THERMAL EXPANSION
VERY LOW TEMPERATURE