Piezoelectric, Dielectric and Ferroelectric Properties of (1−x)(K0.48Na0.52)0.95Li0.05Nb0.95Sb0.05O3-xBa0.5(Bi0.5Na0.5)0.5ZrO3 Lead-Free Solid Solution

Effect of Antimony Content on Transition Behavior and Electric Properties of (K0.44Na0.52Li0.04)(Nb0.9−xTa0.10Sbx)O3 Ceramics

“…On the one hand, the substitutional addition of Sb 5+ should reduce the cell (due to the smaller ionic radius) displacing the peaks towards higher angles, but on the other hand, the increasing concentration of Sb 5+ generates a structural change modifying the T/O content in the structure. Furthermore, similar results were reported by other researchers showing that small cations in B−sites facilitate the coexistence of different phases (from rhombohedral-tetragonal to orthorhombic-tetragonal) at room temperature, decreasing the T O−T toward room temperature, which can indicate that the T O−T was very near to or below room temperature [19,20].…”

“…In this way, potassium sodium niobate (KNN)-based ceramics should have good piezoelectric, ferroelectric, and dielectric properties near the MPB temperature [12][13][14]. Saito et al revealed (K,Na)NbO 3 -LiTaO 3 -LiSbO 3 to have incredibly high piezoelectric characteristics [16][17][18][19]. This investigation was carried out using simultaneous, intricate chemical substitutions (near the MPB of KNN) in the A- (Li) and B-(Ta and Sb) sites of the perovskite lattice.…”

“…In KNL−NTS ceramics, sintering improves with the addition of Li, which also has a significant effect on the final stabilized phase. Additionally, according to many publications, antimony enhances electrical characteristics by increasing T R−O and decreasing T O−T as it approaches room temperature [19,20]. Furthermore, some researchers investigated the optimal Na:K ratio, finding a nominal composition of [(Na 0.535 K 0.480 ) 0.942 Li 0.058 ]NbO 3 .…”