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Mössbauer investigations on glass-forming organic liquids |
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| Authors: | F. Parak E. W. Knapp I. Chang G. U. Nienhaus |
| Affiliation: | 1. Institut für Molekulare Biophysik, FB 21 Johannes Gutenberg-Universit?t, J. Welder Weg 26, D-6500, Mainz, Germany 2. Institut für Kristallographie, FB Chemie, Freie Universit?t Berlin, Takusstra?e 6, D-1000, Berlin, Germany 3. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, 61801, Ubana, IL, USA |
| Abstract: | Glycerol forms a molecular glass near 180K. Fe2+ dissolved in glycerol allows the study of the dynamics of the system by Mössbauer spectroscopy. Recently it has been shown that the Mössbauer 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 Mössbauer spectra of Fe in glycerol. First attempts to compare mode coupling theory with Mössbauer spectra are reported. |
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