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Elsevier, Journal of Non-Crystalline Solids, 2(357), p. 510-514

DOI: 10.1016/j.jnoncrysol.2010.06.074

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High-frequency dynamics of type B glass formers investigated by broadband dielectric spectroscopy

Journal article published in 2011 by S. Kastner, M. Köhler, Y. Goncharov, P. Lunkenheimer, A. Loidl ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We present the results of broadband dielectric spectroscopy on two glass formers with strong Johari–Goldstein β-relaxations. In addition to the α- and β-relaxation dynamics, the extension of the spectra up to 1 THz also allows revealing information on the fast β-process in this class of materials. There is clear evidence for a fast process contributing in the region of the high-frequency loss minimum, which is analyzed in terms of the idealized mode-coupling theory.