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arXiv · cond-mat/9906162

Memory in the aging of a polymer glass

L. Bellon·S. Ciliberto·C. Laroche
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Abstract

Low frequency dielectric measurements on plexiglass (PMMA) show that cooling and heating the sample at constant rate give an hysteretic dependence on temperature of the dielectric constant $ε$. A temporary stop of cooling produces a downward relaxation of $ε$. Two main features are observed i) when cooling is resumed $ε$ goes back to the values obtained without the cooling stop (i.e. the low temperature state is independent of the cooling history) ii) upon reheating $ε$ keeps the memory of the aging history ({\it Memory}). The analogies and differences with similar experiments done in spin glasses are discussed.

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L. Bellon, S. Ciliberto, C. Laroche. 2000-08-10. Memory in the aging of a polymer glass. https://doi.org/10.1209/epl%2Fi2000-00368-1

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