The Dynamics of Mobile Ions in lonically Conducting Glasses and Other Materials
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*(co) = cr'(w) + icr"(w) = iooe0e*{(o). T h e
complex electric modulus M*(co) is related to the more familiar e*(to) and ea/M*(J). A log[cr'(/)] versus log/plot of the data is matched point by point by M"(f) versus log/and M'(f) versus log/plots. There is Q nothing special about cr'(f) in comparison with M*(/) or e*(/). They are just different representations of the same macroscopically measured quantities, 7 8 9 10 11 12 13 14 G(/) and C(f). The electric modulus in \og(fx/o7) the time domain A4(f) has also been mea20 sured directly. Examples of isothermal electrical relaxation data appear as plots of log[
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