Processing and characterization of lead-free ceramics on the base of sodium–potassium niobate

Abstract

Lead-free sodium–potassium niobate-based piezoelectric materials are most intensively studied in order to replace the widely used Pb-based ones. In this work, the effects of modification of compositions by donor and acceptor dopants in the A- and B-sites of perovskite lattice on structure, dielectric, ferroelectric, and piezoelectric properties of ceramics from Morphotropic Phase Boundary in the (1−x)(K0.5Na0.5)NbO3–xBaTiO3 system and in compositions with x=0.05 and 0.06 additionally doped by Ni3+ cations have been studied.

Keywords

• (Ka0.5Na0.5)NbO3
• BaTiO3
• perovskite structure
• solid solutions
• phase transitions
• dielectric
• ferroelectric
• piezoelectric properties