Complex polarizability as used to analyze dielectric relaxation measurements |
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Authors: | E Sánchez Martínez R Díaz Calleja W Gunßer |
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Institution: | (1) Present address: Laboratory of Thermodynamics and Physical Chemistry of E.T.S.I.I.V. Valencia (U.P.V.), Apartado 22012, 46071 Valencia, Spain;(2) Institute of Physical Chemistry, University of Hamburg, Germany |
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Abstract: | The effect of representing dielectric properties in terms of the complex polarizability c = ![agr](/content/v454145631j71566/xxlarge945.gif) – i![agr](/content/v454145631j71566/xxlarge945.gif) is examined. Loss curves (![epsi](/content/v454145631j71566/xxlarge949.gif) and tan ![delta](/content/v454145631j71566/xxlarge948.gif) ) are shifted towards higher frequencies, revealing the existence of new relaxations and allowing the clarifications of ones already known. We have calculated the shift ratios (at maximum ![agr](/content/v454145631j71566/xxlarge945.gif) or tan ![delta](/content/v454145631j71566/xxlarge948.gif) )/ (at maximum ![epsi](/content/v454145631j71566/xxlarge949.gif) or tan ![delta](/content/v454145631j71566/xxlarge948.gif) ) from the more conventional empirical equations representing the dielectric behavior. Some examples are given. |
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Keywords: | Polarizability dielectricrelaxation charge transfercomplexes polymers |
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