here i attach nyquist plot of my sample. when i try to fit it in z-view it looks like non-debye type semicircle so i used constant phase element rather than capacitor. but i am confuse that whether my nyquist plot contains grain at high frequency, grain boundary at mid frequency, electrode-electrolyte effect at lower frequency and further the tail observed at last contain only constant phase element. please check it whether my sample contain grain,grain boundary,electrode-electrolyte effect and CPE at the end and suggest me equivalent circuit and suggest me how to justify all these effects in complex modulus spectra.