Temperature cycling during the aging of a polymer glass

Details Temperature cycling during the aging of a polymer glass Temperature cycling during the aging of a polymer glass

1999-05-12

arxiv.org/abs/cond-mat/9905160v2

Physics

Condensed Matter

6 pages, 4 figures, submitted to Europhysics Letters

Scientific paper

Temperature cycling is used to study of aging properties of PMMA dielectric constant. If a negative temperature cycle is applied during the aging time the relaxation dynamics is just delayed for a time equal to the cycle period. In contrast this time shifting procedure cannot be applied to positive temperature cycles . The analogies and differences with similar experiments done in other aging systems, such as spin glasses, orientational glasses and supercooled liquids, are discussed.

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