Impedance Spectroscopy Models for X5R Multilayer Ceramic Capacitors

A Superior Description of AC Behavior in Polycrystalline Solid Electrolytes with Current-Constriction Effects

“…Parallel (RQC 0 ) models as indicated in the equivalent circuit in Fig. 2(c) have been shown to describe experimental spectra satisfactorily, [46][47][48][49][50] although no definite characterization or understanding of the dispersive behavior has been made. The frequency dispersion due to the mobile charge carriers, characterized by 'H 1 ,' a Cole-Davidson response with γ≈0.4, can be approximated by Q with α≈0.6 on the high frequency side.…”