Phase and Thermal Properties of Calcium Copper Titanate (CaCu3Ti4O12)/Barium Titanate (BaTiO3) Composites

Abstract

Barium Titanate (BT) and Calcium Copper Titanate (CCTO) are renowned for their high dielectric properties, and they have been extensively researched for the miniaturization of microelectronic devices. Integrating CCTO’s high dielectric constant property with BT’s low loss as a composite could leverage the benefits of both compounds. This research explores the phase and thermal behavior of BT and CCTO in their composite form, synthesized via the solid-state reaction method. The composite mixture was formulated according to BaTiO3.xCaCu3Ti4O12, where x = 0.2, 0.5, 1, 1.2, and 1.5 mol%. A semi-quantitative analysis confirmed the composition, with minor variations potentially arising from milling factors. Notably, the milling process led to the formation of oxygen vacancies, as observed from the TGA/DSC analysis.