Phase structure, microstructure and ferroelectric properties of (1−x)[(K0.50Na0.50)0.94Li0.06](Nb0.94Sb0.06)O3–xCaTiO3 lead-free ceramics

Enhanced thermal stability and fatigue resistance in MTiO3-modified (K0.5Na0.5)0.94Li0.06NbO3 lead-free piezoelectric ceramics

“…b The average grain size of KNLN6--E hysteresis loops of KNLN6-1MT ceramics measured at RT and 10 Hz weaken the ferroelectricity of the ceramics. Similar weakening effects have also been reported for MT (M = Ca, Sr, Ba, Mg, Bi 0.5 Na 0.5 , Bi 0.5 K 0.5 ) modified KNN-based ceramics[14,[16][17][18].…”

Crystal structure and properties of K0.5Na0.5NbO3–Bi0.5Na0.5TiO3–LiSbO3 lead-free piezoelectric ceramics

“…Our research indicated that the KNN-(Bi 0.5 Na 0.5 )TiO 3 ceramics with small amounts of LiSbO 3 exhibited the excellent piezoelectric properties when 1 mol% (Bi 0.5 Na 0.5 )TiO 3 was added. Many researches have been focused on the KNN-LiSbO 3 systems [17][18][19][20][21]. But few reports are involved with the solid solutions of K 0.5 Na 0.5 NbO 3 -Bi 0.5 Na 0.5 TiO 3 -LiSbO 3 system, and the effect of LiSbO 3 on the properties of the K 0.5 Na 0.5 NbO 3 -Bi 0.5 Na 0.5 TiO 3 -LiSbO 3 ceramics remains unclear.…”

Microstructure and piezoelectric properties of Na0.5K0.5NbO3–BiNiO3–LiSbO3 lead-free ceramics

“…Fig. 2 shows the SEM surface micrographs of the (0.94 − x)NKN-xBN-LS6 ceramic samples modified with LS and different content of BN sintered at optimum temperature of 1105 • C for 2 h. It can be observed that all samples have dense microstructures and a typical feature of quadrate shape, which was common in NKN-based ceramics [5,16,21,22]. The addition of BN has significant effect on the sintering behavior and the morphology features of (0.94 − x)NKN-xBN-LS6 ceramics.…”

“…And perovskite compounds were widely introduced to form binary or ternary solid solutions to obtain industrial application suited lead-free piezoelectric ceramics as well [8][9][10][11][12][13]. And (1 − x)NKN-xLiSbO 3 ceramics were reported to have high piezoelectric properties and the modification of LiSbO 3 optimized around x = 0.04-0.06 [10,[14][15][16]. Meanwhile, searching for a solid solution system with a morphotropic phase boundary (MPB) was another aim of these efforts [14,17,18].…”