Lead-free (1 - x)(Na0.5K0.5)NbO 3-xBa(Ti0.9Sn0.1)O3 ceramics doped with 1 mol % MnO2 [(1 - x)NKN-xBTS] were prepared by the conventional solid state method and their structural and piezoelectric properties were investigated. The (1 - x)NKN-xBTS ceramics were well synthesized and a dense microstructure was achieved when sintered at 1050°C for 8h. The phase transition temperature of the tetragonal-cubic (Tc) peaks became broadened with increasing x, suggesting that a diffuse phase transition was induced and that the ceramic was changed gradually from a normal ferroelectric to a relaxor ferroelectric. The significantly enhanced piezoelectric properties of d33 = 256 and kp = 42% were obtained for the 0.94NKN-0.06BTS ceramics.
ASJC Scopus subject areas
- Physics and Astronomy(all)