Calculated values of frequency exponent s, exponent β, maximum barrier height (W_M), and optical band gap (E^opt_g) for BaTi_1−xCo_xO₃ compounds.

Sample	s	β	W M (eV) calculated by eqn (10)	E opt (eV)
x = 0	0.797	0.203	0.76	3.14
x = 0.02	0.806	0.194	0.80	3.25
x = 0.04	0.807	0.193	0.81	3.27
x = 0.06	0.810	0.190	0.82	3.29
x = 0.08	0.812	0.188	0.83	3.33
x = 0.1	0.822	0.178	0.87	3.44