Abstract

The ceramics with the formula of (1-y)[0.995Bi_0.5(Na_0.80K_0.20)_0.5TiO₃-0.005LiNbO₃]-yBa(Ti_0.90Sn_0.10)O₃ or (1-y)[0.995BNKT-0.005LN]-yBTS (y = 0-0.05 mol fraction) were successfully prepared by a conventional mixed oxide method. It was found that all compositions showed single phase with a mixed rhombohedral/tetragonal structure. The highest piezoelectric coefficient (d₃₃ = 175 pC/N) with good dielectric (ε_r = 1775, tanδ = 0.0534) and ferroelectric properties (P_r = 12.33 µC/cm², R_sq = 1.37) was obtained for y = 0.04 sample. The bipolar S-E loops showed highest S_max = 0.25% at y = 0.05.

摘要

分子式为（1- y）[0.995Bi _0.5（Na _0.80 K _0.20）_0.5 TiO ₃ -0.005LiNbO ₃ ] -y Ba（Ti _0.90 Sn _0.10）O ₃或（1- y）[0.995BNKT- 通过常规混合氧化物方法成功制备了0.005LN] -y BTS（y = 0-0.05摩尔分数）。发现所有组合物显示具有混合的菱形/四边形结构的单相。最高的压电系数（d ₃₃与良好的介电（= 175 PC / N）ε _{- [R}y  = 0.04的样品 ，其铁电特性（_Pr = 12.75 µC / cm ²，R _sq = 1.37）= 1775，tanδ = 0.0534），铁电性能（P _r = 12.33 µC / cm ²，R _sq = 1.37）。双极SE回路在y  = 0.05时显示出最高的S _max = 0.25％。