Effect of oxygen impurities on properties of the ternary superconductor SnMo/sub 6/S/sub 8/: Extended x-ray-absorption fine-structure determination of bond distances and local-density cluster calculations

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.32.4398· OSTI ID:5228345

Guenzburger, D; Ellis, D E; Montano, P A; Shenoy, G K; Malik, S K; Hinks, D G; Vaishnava, P; Kimball, C W

Electronic structure calculations were performed for clusters representing the Chevrel-phase SnMo/sub 6/S/sub 8/, with and without oxygen doping. In order to obtain the local structure around the Sn atom, extended x-ray-absorption fine-structure (EXAFS) measurements were made with synchro- tron radiation. The interatomic distances obtained experimentally were used in the calculations. The effect of oxygen doping on the Moessbauer isomer shift and quadrupole splitting values of /sup 119/Sn was investigated theoretically and compared with reported experimental values. The effect of oxygen substitution on the density of states at the Fermi energy of the (Mo/sub 6/S/sub 8/)/sup 2 -/ cluster was also studied. The results suggest that oxygen doping does not alter significantly the electronic structure of SnMo/sub 6/S/sub 8/.

• Research Organization: Materials Science and Technology Division, Argonne National Laboratory, Argonne, Illinois 60439 and Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60201
• OSTI ID: 5228345
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 32:7; ISSN PRBMD
• Country of Publication: United States
• Language: English

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
ABSORPTION SPECTRA
BOND LENGTHS
CHALCOGENIDES
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRONIC STRUCTURE
ELEMENTS
FINE STRUCTURE
IMPURITIES
IONIZING RADIATIONS
LENGTH
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
NONMETALS
OXYGEN
PHYSICAL PROPERTIES
RADIATIONS
REFRACTORY METAL COMPOUNDS
SPECTRA
SULFIDES
SULFUR
SULFUR COMPOUNDS
SUPERCONDUCTIVITY
TIN COMPOUNDS
TIN SULFIDES
TRANSITION ELEMENT COMPOUNDS
X RADIATION