NDLI: AC conductivity behavior of poly(o-methoxyaniline)

Content Provider	IEEE Xplore Digital Library
Author	Nogueira, J.S. Mattoso, L.H.C. Faria, R.M.
Copyright Year	1996
Description	Author affiliation: Inst. de Quimica de Sao Carlos, Sao Paulo Univ., Sao Carlos, Brazil (Nogueira, J.S.)
Abstract	The AC conductivity of doped poly(o-methoxyaniline) (POMA) films, at temperatures between 4.2 and 298 K, has been measured. For low frequencies the real part of the conductivity, /spl sigma/(/spl omega/), is frequency-independent, and above a critical angular frequency /spl gamma/ it obeys an equation of the form /spl sigma/(/spl omega/)/spl prop//spl omega//sup s/. Both the DC conductivity /spl sigma//sub 0/ and the critical frequency /spl omega/ increase with the temperature, however the exponential factor s is a temperature-independent quantify. It was also observed that above 10/sup 5/ Hz, /spl sigma/(/spl omega/) tends to a plateau. A nomadic polarization model of quasi-one-dimensional solids was used to fit the experimental results. Values for the bulk mobility, the carrier density and the transition rate of the intermolecular charge transfer were estimated.
Starting Page	249
Ending Page	252
File Size	282546
Page Count	4
File Format	PDF
ISBN	0780335805
DOI	10.1109/CEIDP.1996.564673
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-10-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Conductivity Frequency Polymer films Temperature Doping Conducting materials Dielectric constant Conductive films Polarization Dielectric materials
Content Type	Text
Resource Type	Article

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