[20p-P02-1~1] 9.1 Dielectrics, ferroelectrics

[20p-P02-1] Additive Effects of Cu-based Compound (NaCu_2.5Ti_4.5O₁₂) for Low Temperature Sintering on (Bi_1/2Na_1/2)TiO₃ Ceramics

〇Jianrui Han¹, Yuka Takagi¹, Hajime Nagata¹ (1.Tokyo Univ. of Science)

Keywords:

lead-free piezoelectric ceramics,bismuth sodium titanate,low-temperature sintering

The development of lead-free piezoelectric ceramics is demanded for environmental protection. (Bi_1/2Na_1/2)TiO₃ (BNT) is one of the candidate materials because of its relatively high piezoelectric properties. However, there are still some problems such as high sintering temperature. To address this issue, we propose the addition of NaCu_2.5Ti_4.5O₁₂ (abbreviated as NCT), and have studied how the NCT influences the low-temperature sintering and electrical properties of BNT. As a result, we have confirmed that the addition of NCT enables the low-temperature sintering of BNT, without deteriorating its piezoelectric properties.