Table 2: Critical frequency and relaxation time τ, values at three different MR concentrations.

Samples (0 volt) (4 volt) (8 volt)τ (0 volt)τ (4 volt)τ (8 volt)

E7/C60/MR0.1%3.25586 × 1063.22366 × 106737632.404.888 × 10−84.937 × 10−82.157 × 10−7
E7/C60/MR0.5%3.52359 × 1063.44416 × 106795446.994.516 × 10−84.621 × 10−82.000 × 10−7
E7/C60/MR1.0%3.12973 × 1063.04494 × 106795446.995.085 × 10−85.226 × 10−82.000 × 10−7