期刊
JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 357, 期 2, 页码 510-514出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2010.06.074
关键词
Dielectric relaxation; Supercooled liquids; Glassy dynamics
资金
- Deutsche Forschungsgemeinschaft [FOR 1394]
We present the results of broadband dielectric spectroscopy on two glass formers with strong Johari-Goldstein beta-relaxations. In addition to the alpha- and beta-relaxation dynamics, the extension of the spectra up to 1 THz also allows revealing information on the fast beta-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. (C) 2010 Elsevier B.V. All rights reserved.
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