Enhanced Electrical Properties of Lead-Free Piezoelectric KNLN-BZ-BNT Ceramics With the Modification of Sm3+ Ions

Environment-friendly lead-free piezoelectric ceramics with great properties and high thermal stability are desired in the industry. In this work, Sm 3+ -modified 0.915(K 0.45 Na 0.5 Li 0.05 )NbO 3 –0.075BaZrO –0.01(Bi )TiO (KNLN-BZ-BNT) prepared. The improved introduction of , optimal ( d 33 = 325 pC/N * 384 pm/V) achieved ceramic modified 0.3 mol% ions. Meanwhile, sample shows good such that values decreased less than 20% when temperature raised from 30 to 180 o C. These results show KNLN-BZ-BNT for further applications even under temperature.