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Constant-Phase-Element Behavior Caused by Coupled Resistivity and Permittivity Distributions in Films

Musiani, M. and Orazem, Mark E. and Pébère, Nadine and Tribollet, Bernard and Vivier, Vincent Constant-Phase-Element Behavior Caused by Coupled Resistivity and Permittivity Distributions in Films. (2011) Journal of The Electrochemical Society (JES), vol. 158 (n° 12). pp. C424-C428. ISSN 0013-4651

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Official URL: http://dx.doi.org/10.1149/2.039112jes

Abstract

A recent proposed model showed that the impedance of a film with a uniform permittivity and a resistivity that varies along its thickness according to a power-law is in the form of a constant phase element (CPE). This model is further considered in order to assess the effect of non-uniform permittivity profiles. It is shown that a power-law permittivity profile is also compatible with a CPE behavior when resistivity and permittivity vary in opposite ways along the film thickness. This work shows that, for important classes of materials which show CPE behavior, relaxation of the assumption of a uniform permittivity does not alter the conclusions developed in the earlier work, and the formula relating film properties to CPE parameters is shown to apply.

Item Type:Article
Additional Information:Thanks to Electrochemical Society editor. The original version is available at http://www.electrochem.org/ The original PDF of the article can be found at Journal of The Electrochemical Society website: http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JESOAN00015800001200C424000001&idtype=cvips&gifs=yes
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Consiglio Nazionale delle Ricerche - CNR (ITALY)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > University of Florida (USA)
Laboratory name:
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Deposited By: Denis Faragou

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