INFLUENCE OF ZIRCONIUM ON STRUCTURAL, MICROSTRUCTURAL AND FERROELECTRIC PROPERTIES OF BaZr_0.20Ti_0.80O₃ CERAMIC

ABSTRACT

Barium zirconium titanate BaZr_xTi_1-xO₃ ceramics have been obtained by conventional method. The X-ray diffraction analysis showed that the BaZr_0.20Ti_0.80O₃ crystallizes in the cubic structure. The lattice parameter a increases with temperature, at temperature ∼308 K a small deviation is observed. The performed EDS study revealed that the samples were perfectly sintered and that the material was chemically homogeneous. It contains a little glassy phase and the grains are well shaped. The zirconium content (20 mol%) in the examined solid solution caused downward shift of the temperature T _m . The increase of the achieved permittivity values ϵ_m was observed as well.

Keywords:

• barium zirconium titanate BaZr_xTi_1-xO₃
• structural properties
• ferroelectric properties