Effect of sintering temperature on piezoelectric and dielectric properties of 0.98(Na0.5K0.5)NbO3-0.02Li(Sb0.17Ta0.83)O-3+0.01wt%ZnO ceramics

Abstract

We studied sintering temperature to enhance the piezoelectric and dielectric properties of 0.98(Na-0.5 K-0.5)NbO3-0.02Li(Sb0.17Ta0.83)O-3 + 0.01wt%ZnO (hereafter NKN-LST+ZnO) lead free piezoelectric ceramics. The synthesis and sintering method were the conventional ceramic technique and sintering was executed at 1080 similar to aEuro parts per thousand 1120A degrees C. We found that optimal sintering temperature and NKN-LST+ZnO ceramics showed the highest piezoelectric properties and dielectric properties at the optimal sintering temperature. The NKN-LST+ZnO ceramics sintered at 1090A degrees C show a superior performance with piezoelectric constant d (33) = 185 pC/N, k (p) = 0.36, epsilon (33) (T) /epsilon(0) = 491 respectively. These results reveal that NKN-LST+ZnO ceramics are promising candidate materials for lead-free piezoelectric application.