Title: Dynamic characterisation and model identification in ferroelectric thin films

Authors: Bruno Ando, Pietro Giannone, Salvatore Graziani

Addresses: Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi, University of Catania, Viale A. Doria, 6, Catania 95125, Italy. ' Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi, University of Catania, Viale A. Doria, 6, Catania 95125, Italy. ' Dipartimento di Ingegneria Elettrica, Elettronica e dei Sistemi, University of Catania, Viale A. Doria, 6, Catania 95125, Italy

Abstract: The task of identifying the non-linearity of ferroelectric devices by using a |Quartic Double Well| (QDW) model is addressed. A strategy for the estimation of model parameters fitting the dynamic behaviour of the device in a large range of frequencies is discussed. An experimental set-up for investigating the dynamic behaviour of a ferroelectric device is described and results are presented showing the capability of the proposed model to reproduce the hysteresis loops, at various frequencies and forcing field amplitudes.

Keywords: hysteresis devices; ferroelectric materials; thin films; experimental characterisation; dynamic modelling; identification parameters; model data fitting; nonlinearity.

DOI: 10.1504/IJMIC.2008.020549

International Journal of Modelling, Identification and Control, 2008 Vol.3 No.4, pp.404 - 412

Published online: 29 Sep 2008 *

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