Figure 8

Frequency dependence of ε′ at various temperatures for (a) NECTO-1000, (b) NSCTO-1000, (c) NECTO-975, (d) NSCTO-975, (e) NECTO-950 and (f) NSCTO-950; their insets show the frequency dependence of ε″ in a temperature range from 203 to 343 K.