Effect of change of phonon and electron spectra during amorphization on the change of T/sub c/ of the alloy Zr/sub 70/Be/sub 30/
Journal Article
·
· Sov. Phys. - JETP (Engl. Transl.); (United States)
OSTI ID:6553380
The heat capacity (between 2 and 500 K), magnetic susceptibility (2--300 K), and superconducting transition temperature of the Zr/sub 70/Be/sub 30/ system are measured in the amorphous and metastable crystalline states. The parameters that characterize the changes in the phonon and electron spectra of the alloy upon amorphization are determined from the experimental data, and the contributions of the changes to T/sub c/ are analyzed. The expression obtained for T/sub c/ by solving the Eliashberg equation with a kernel comprising the sum of peaks with significantly different characteristic frequencies is used in analysis. It is shown that for Zr/sub 70/Be/sub 30/ the contribution made to T/sub c/ by the change of the phonon spectrum on amorphization is comparable with the contribution due to the change of the electron spectrum. The role of the optical phonons in the establishment of T/sub c/ is considered.
- Research Organization:
- I. V. Kurchatov Institute of Atomic Energy
- OSTI ID:
- 6553380
- Journal Information:
- Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 58:4; ISSN SPHJA
- 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
AMORPHOUS STATE
BERYLLIUM ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON SPECTRA
ENERGY LEVELS
EXCITED STATES
HIGH TEMPERATURE
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MEDIUM TEMPERATURE
METASTABLE STATES
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
SPECIFIC HEAT
SPECTRA
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
ZIRCONIUM ALLOYS
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
BERYLLIUM ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON SPECTRA
ENERGY LEVELS
EXCITED STATES
HIGH TEMPERATURE
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MEDIUM TEMPERATURE
METASTABLE STATES
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
SPECIFIC HEAT
SPECTRA
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
ZIRCONIUM ALLOYS