International Scholarly Research Notices / 2013 / Article / Tab 2

Research Article

Study of Dielectric Relaxation Behavior of Liquid Crystal Copolyester Vectra-A by Thermally Stimulated Discharge Current Technique

Table 2

Values of activation energy (U), dipolar relaxation strength , preexponential factor , charge released (Q), and concentration of traps for α-relaxation at poling temperature = 80°C for various polarizing fields.

α-relaxation
Poling fields
(kV/cm)
U (eV) (Sec)Q (C) (m−3)

3.80.762.83.75 × 10−824 × 10−106.53 × 1012
7.70.513.31.98 × 10−458.80 × 10−1016 × 1012
11.50.43 4.67.48 × 10−3120 × 10−1016 × 1012
15.30.424.731.25 × 10−2162.87 × 10−1044.33 × 1012
19.20.344.995.60 × 10−2216.09 × 10−1058.82 × 1012