6533b85bfe1ef96bd12ba8ac

RESEARCH PRODUCT

Mössbauer investigations on glass-forming organic liquids

I. ChangE. W. KnappG. U. NienhausFritz G. Parak

subject

Nuclear and High Energy PhysicsChemistryJump diffusionAnalytical chemistryDielectricCondensed Matter PhysicsAtomic and Molecular Physics and OpticsViscoelasticityMode couplingMössbauer spectroscopyRelaxation (physics)Physical and Theoretical ChemistryThin filmSpectroscopy

description

Glycerol forms a molecular glass near 180K. Fe2+ dissolved in glycerol allows the study of the dynamics of the system by Mossbauer spectroscopy. Recently it has been shown that the Mossbauer spectra can be understood in a way consistent with the results of dielectric and ultrasonic viscoelastic relaxation measurements. A jump diffusion model of Sinqwi and Sjolander with a jump rate distribution according to Davidson and Cole allowed us to fit the Mossbauer spectra of Fe in glycerol. First attempts to compare mode coupling theory with Mossbauer spectra are reported.

https://doi.org/10.1007/bf02397527