Preparation and Properties of the Ferroelectric Materials Based on BIT

Abstract

In this paper, firstly, the BIT powder was synthesized by ball grinding and the sequent calcinations, starting from TiO2 and Bi2O3. Typically, the grinding technique was facile to form the smaller particles, and the sintering process was utilized to obtain the pure BIT phase. The influence of heated temperature, time and the content of doped rare earth metal (La, Y) on BIT matrix have been investigated in details. The procedure consisted of being pressed, sintered, silver coated to obtain the BIT ferroelectric blocks. Lastly, the BIT density and ferroelectric properties of obtained blocks have been studied. The results showed that via the milling process and the addition of La and Y elements, BIT could be shaped at the lower temperature. Meanwhile, the ferroelectric properties have been improved.