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Lattice vibrational behavior of SnMo/sub 6/S/sub 8/ and oxygen defected SnMo/sub 6/S/sub 7/ /sub 8/O/sub 0/ /sub 2/

Conference ·
OSTI ID:7064380
; ; ; ; ;
The temperature dependence of the Moessbauer effect has been measured at /sup 119/Sn sites in oxygen-free, SnMo/sub 6/S/sub 8/ (T/sub c/ = 14.2K) and in oxygen substituted SnMo/sub 6/S/sub 7/ /sub 8/O/sub 0/ /sub 2/ (T/sub c/ = 10.1K). The temperature dependence of the asymmetry of the quadrupole doublet for SnMo/sub 6/S/sub 8/ shows phonon anomalies near 50 and 120K. /sub T/ indicates contraction with increasing temperature between 4.3 and 50K. For the oxygen substituted compound a study of the variation of mean square displacement with temperature shows lattice softening near 120K.
Research Organization:
Northern Illinois Univ., Dekalb (USA). Dept. of Physics; Argonne National Lab., IL (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
7064380
Report Number(s):
CONF-840842-18; ON: DE84013453
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
CHALCOGENIDES
DAYS LIVING RADIOISOTOPES
DEBYE TEMPERATURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LATTICE VIBRATIONS
MOESSBAUER EFFECT
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
MOLYBDENUM SULFIDES
NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RADIOISOTOPES
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TIN 119
TIN COMPOUNDS
TIN ISOTOPES
TIN OXIDES
TIN SULFIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE