Abstract
Influence of A-site doping with Li+, Ag+, and K+ cations on structure, microstructure, dielectric, ferroelectric, and local piezoelectric properties of potassium niobate (K0.5Na0.5)NbO3 ceramics was studied. Changes in the unit cell parameters correlated with ionic radii changes. Correlations between dielectric and piezoelectric properties were confirmed. The highest effective local d33 piezoelectric coefficient values were observed in Ag+-doped compositions prepared by the sol-gel method.
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