Mossbauer study of the lattice properties of the system V/sub 3/Ga/sub 1//sub -//sub x/Sn/sub x/
Journal Article
·
· Phys. Rev., B; (United States)
The temperature dependence of the /sup 119/Sn Mossbauer shift and the relative recoil-free fraction has been measured in the A-15 pseudobinary compounds V/sub 3/Ga/sub 1//sub -//sub x/Sn/sub x/ (x = 0.9, 0.5, 0.1). A two-Debye model for the phonon spectra describes the Sn vibrational motion, < v/sup 2/ > and < x/sup 2/ >. For V/sub 3/Ga/sub 0//sub .//sub 9/Sn/sub 0//sub .//sub 1/ a deviation of the thermal shift from Debye behavior is shown to be due to lattice softening; that is, phonon mode shifting is observed for the Ga-rich high-T/sub c/ compound. Comparison with heat-capacity results indicates that the vibrational motion of the vanadium atom also softens at low temperature. Moreover, a consideration of the concentration dependence of the Sn and Ga phonon contribution to the mass enhancement lambda suggests that the vanadium site controls the dependence of lambda, and hence T/sub c/, on concentration. (AIP)
- Research Organization:
- Northern Illinois University, DeKalb, Illinois 60115
- OSTI ID:
- 7337903
- Journal Information:
- Phys. Rev., B; (United States), Journal Name: Phys. Rev., B; (United States) Vol. 14:7; ISSN PLRBA
- 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
CRYSTAL STRUCTURE
DAYS LIVING RADIOISOTOPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EVEN-ODD NUCLEI
GALLIUM ALLOYS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LATTICE PARAMETERS
MOESSBAUER EFFECT
NUCLEI
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RADIOISOTOPES
SPECIFIC HEAT
STABLE ISOTOPES
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TIN 119
TIN ALLOYS
TIN ISOTOPES
TRANSITION TEMPERATURE
VANADIUM 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
CRYSTAL STRUCTURE
DAYS LIVING RADIOISOTOPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EVEN-ODD NUCLEI
GALLIUM ALLOYS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LATTICE PARAMETERS
MOESSBAUER EFFECT
NUCLEI
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RADIOISOTOPES
SPECIFIC HEAT
STABLE ISOTOPES
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TIN 119
TIN ALLOYS
TIN ISOTOPES
TRANSITION TEMPERATURE
VANADIUM ALLOYS