6533b7d8fe1ef96bd126a49e
RESEARCH PRODUCT
Short and Medium Range Order in Se1-xTexGlasses
M. MajidJuris PuransJuris PuransS. BénazethC. Souleausubject
Fit/gap analysisExtended X-ray absorption fine structureScatteringChemistryShell (structure)General Physics and AstronomyMineralogy01 natural sciencesMolecular physics3. Good health010305 fluids & plasmasX-ray absorption fine structure[PHYS.HIST]Physics [physics]/Physics archivesMedium range0103 physical sciencesOrder (group theory)Solid solutiondescription
Complementary XAFS measurements (LURE and NSLS) of Se 1 - x Te x glasses have been carried out on both the Se and Te K-edges at low and room temperatures. Using a multi-shell best fit analysis procedure, we have reconstructed the Se and Te local environment: (i) first shell intrachain nearest neighbors (Se-Se 1 , Se-Te 1 , Te-Se 1 ,and Te-Te 1 ); (ii) second shell intrachain (Se-Se 2 and Se-Te 2 ) and interchain next nearest neighbors (Se⇔Se 3 single scattering in the chains Se-Se 1 -Se 3 and Se-Te 1 -Se 3 ). For the first and second coordination shells we suggest that the intrachain chemical order increases with Te content. On the other hand, we propose a model of random distribution of Se and Te atoms between the chains.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-04-01 | Le Journal de Physique IV |