EFFECT OF PROCESSING CONDITIONS ON ELECTRICAL PROPERTIES OF CaCu₃Ti₄O₁₂ CERAMICS

Abstract

CaCu 3 Ti 4 O 12 ( CCTO ) ceramics were prepared by the solid-state reaction route. Effect of sintering time was studied on the polarization (P) versus electric field (E) behavior. Unlike conventional ferroelectric hysteresis loop, PE hysteresis behavior in CCTO ceramics was observed to exhibit ferroelectric-like loop where polarization does not saturate but gives a maximum value. Remnant polarization and maximum polarization was observed to increase with sintering time. Current (I)–voltage (V) characteristics shows a nonlinear behavior making them useful for varistor applications. Coefficient of non-linearity (α) is also found to depend on sintering duration.

Archives of Metallurgy and Materials

“…These characteristics make this material a potential candidate for diverse applications in the electronics industry [10]. However, as in any electroceramic compound, some deficiencies must be overcome, such as the strong dependence of the dielectric properties of the material with the processing route [11,12].…”