6533b838fe1ef96bd12a4f28

RESEARCH PRODUCT

XAFS study of short range order in the heavily disordered MoxW1−wO3 oxides

Juris PuransPh. ParentAlexei KuzminH. Dexpert

subject

Materials scienceMetal ions in aqueous solutionShell (structure)Analytical chemistryCrystal structureCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsX-ray absorption fine structuresymbols.namesakesymbolsCrystalliteElectrical and Electronic EngineeringRaman spectroscopyChemical compositionSolid solution

description

We have done comparative XAFS analysis on the MoK and WL 3 edges of polycrystalline Mo x W 1-x O 3 solid solutions. It was found that their structures are closely related to corner-shared WO 3 -type for x<0.9 while α-MoO 3 -type structure is present for x≥0.9. The obtained structural parameters for the first shell around metal ions allow to distinguish several structural phase transitions due to the change of composition. A set of subshells within the first shell was found, and they are in good agreement with Raman data

https://doi.org/10.1016/0921-4526(94)00699-v