Extended x-ray-absorption fine-structure observation of collinear ordering of Fe-Sn-Fe atoms in the Chevrel-phase superconductor SnFe/sub 0. 05/Mo/sub 6/S/sub 8/

Journal Article · Wed Oct 01 00:00:00 EDT 1986 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.34.4599· OSTI ID:5111266

Vaishnava, P P; Kimball, C W; Matykiewicz, J L; Fradin, F Y; Shenoy, G K; Montano, P A

Extended x-ray-absorption fine-structure (EXAFS) and x-ray-diffraction studies have been conducted on the Chevrel-phase superconductor SnFe/sub 0.05/Mo/sub 6/S/sub 8/. The site symmetry of the iron is found to be similar to that of copper in the high-temperature phase of Cu/sub 1.8/Mo/sub 6/S/sub 8/. EXAFS analysis yielded interatomic distances, e.g., Fe-Sn and Fe-S, in this compound. The Fe-S distances are found to be characteristic of iron sulfides (e.g., FeS and Fe/sub 7/S/sub 8/). Through the observation of focused multiple scattering, a distance corresponding to a linear array of Fe-Sn-Fe atoms was measured. Iron atoms were found to be situated in two different configurations, one where iron has only a tin neighbor and the other where a linear-chain-like configuration of Fe-Sn-Fe atoms occurs.

• Research Organization: GMI Engineering and Management Institute, Flint, Michigan 48502
• OSTI ID: 5111266
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 34:7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
IRON SULFIDES
X-RAY DIFFRACTION
X-RAY SPECTRA
MOLYBDENUM SULFIDES
TIN SULFIDES
ABSORPTION SPECTRA
BOND LENGTHS
EXPERIMENTAL DATA
FINE STRUCTURE
MULTIPLE SCATTERING
TYPE-II SUPERCONDUCTORS
CHALCOGENIDES
COHERENT SCATTERING
DATA
DIFFRACTION
DIMENSIONS
INFORMATION
IRON COMPOUNDS
LENGTH
MOLYBDENUM COMPOUNDS
NUMERICAL DATA
REFRACTORY METAL COMPOUNDS
SCATTERING
SPECTRA
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTORS
TIN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360603* - Materials- Properties
656102 - Solid State Physics- Superconductivity- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena- (-1987)