Nature of the non-exponential primary relaxation in structural glass-formers probed by dynamically selective experiments

R. Böhmer, Ralph Chamberlin, G. Diezemann, B. Geil, A. Heuer, G. Hinze, S. C. Kuebler, Ranko Richert, B. Schiener, H. Sillescu, H. W. Spiess, U. Tracht, M. Wilhelm

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207 Scopus citations

Abstract

Several experimental methods feature the potential to distinguish between slow and fast contributions to the non-exponential, ensemble averaged primary response in glass-forming materials. Some of these techniques are based on the selection of subensembles using multi-dimensional nuclear magnetic resonance, optical bleaching, and non-resonant spectral hole burning. Others, such as the time-dependent solvation spectroscopy, measure microscopic responses induced by local perturbations. Using several of these methods it could be demonstrated for various glass-forming materials that the non-exponential relaxation results from a superposition of dynamically distinguishable entities. The experimental observation that subensembles can be selected efficiently indicates a large degree of heterogeneity. The intrinsic response is compatible with single exponential relaxation.

Original languageEnglish (US)
Pages (from-to)1-9
Number of pages9
JournalJournal of Non-Crystalline Solids
Volume235-237
DOIs
StatePublished - Aug 2 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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    Böhmer, R., Chamberlin, R., Diezemann, G., Geil, B., Heuer, A., Hinze, G., Kuebler, S. C., Richert, R., Schiener, B., Sillescu, H., Spiess, H. W., Tracht, U., & Wilhelm, M. (1998). Nature of the non-exponential primary relaxation in structural glass-formers probed by dynamically selective experiments. Journal of Non-Crystalline Solids, 235-237, 1-9. https://doi.org/10.1016/S0022-3093(98)00581-X