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The natural logarithm of the relaxation time of dielectric loss mechanisms I (squares) and II (circles), respectively, in conducting polypyrrole. Straight lines best fit the data points. Inset: the imaginary part of the dielectric permittivity (after subtraction of the dc component) as a function of frequency at room temperature for two different pressures: (a) ambient pressure and (b) .
Evaluation of for two relaxation mechanisms in conducting polypyrrole from the pressure variation of at room temperature , taking into account the correction terms appearing in Eqs. (6) and (7), respectively. Zero pressure isothermal compressibility values are from two sources. Details are given in the text.
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