1991
DOI: 10.1007/bf00348162
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Fast polarization reversal in thin copolymer films of vinylidene fluoride-trifluoroethylene

Abstract: In this paper we present new experiments on the switching of the polarization in thin (< 1 ~tm) ferroelectric copolymer films of P(VDF-TrFE). We observed an unexpectedly short switching time for these thin films: The polarization of a 0.2 ~tm thick film could be reversed by poling fields of 600MV/m in less than lOOns. This result which may revive interest in ferroelectric data storage is discussed in terms of a switching process which also involves the ohmic conductivity of the sample.

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Cited by 7 publications
(2 citation statements)
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“…Ferroelectric polymers have a much lower permittivity and much slower switching speed than inorganic ferroelectrics. 20,21 This may lead to the possibility of realizing the previously mentioned pure crosspoint arrays, which were not successful with inorganic ferroelectrics. 22 The slow switching speed can be compensated for by massive parallelism in high-density data storage applications like digital cameras, MP3 players, or digital videos.…”
Section: Organic and Molecular Memoriesmentioning
confidence: 99%
“…Ferroelectric polymers have a much lower permittivity and much slower switching speed than inorganic ferroelectrics. 20,21 This may lead to the possibility of realizing the previously mentioned pure crosspoint arrays, which were not successful with inorganic ferroelectrics. 22 The slow switching speed can be compensated for by massive parallelism in high-density data storage applications like digital cameras, MP3 players, or digital videos.…”
Section: Organic and Molecular Memoriesmentioning
confidence: 99%
“…Μία τυπική καµπύλη υστέρησης ενός φερροηλεκ-τρικού υλικού φαίνεται στο σχήµα 2.13. Τα φερροηλεκτρικά πολυµερή έχουν πολύ µικρότερη επιδεκτικότητα και πολύ χαµηλότερη ταχύτητα µετάβασης από τη µία κατάσταση στην άλλη σε σχέση µε τα ανόργανα φερροηλεκτρικά υλικά[113,114]. Μπορούν να χρησιµοποιηθούν, όµως, στο σχήµα της 3-D αρχιτεκτονικής, στο οποίο δεν είναι επιτυχής η χρησιµοποίηση ανόργανων φερροηλεκτρικών υλικών, αν και πολύ λίγες πληροφορίες είναι δηµοσιευµένες σχετικά µε την κατάσταση και την απόδοση των φερροηλεκτρικών πολυµερών.…”
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