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Phase transitions and aging phenomena in dielectriclike polymeric materials investigated by ac measurements

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4 Author(s)
dAngelo, P. ; CNR-INFM Coherentia and Dipartimento di Scienze Fisiche, Università di Napoli, Piazzale Tecchio 80, Naples 80125, Italy ; Barra, M. ; Nicodemi, M. ; Cassinese, A.

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We study the glassy phase of a thin polydimethylsiloxane film by high sensitivity dielectric measurements. We can locate its glass and melting transition temperatures and discuss its aging properties and frequency dependencies. Our data are framed into the general picture of glassy phenomena and compared, in particular, to the so called universal dielectric response model of frequency dispersion. The effect of a dc bias is also analyzed.

Published in:

Journal of Applied Physics  (Volume:101 ,  Issue: 4 )