Processing and enhanced piezoelectric properties of highly oriented compositionally modified Pb(Zr,Ti)O_3 ceramics fabricated by magnetic alignment

摘要

Highly oriented compositionally modified Pb(Zr,Ti)O_3 (PZT) ceramics were successfully obtained by slip casting in a high magnetic field. PZT is a well-known superior ceramic with the highest piezoelectric properties, and these properties have been expected to be further improved through crystalline orientation. However, highly oriented PZT ceramics fabricated by slip casting in a high magnetic field have never been reported. We obtained oriented ceramics using compositionally modified PZT with Pb(Ni,Nb)O_3, and their Lotgering factor was 0.77. The electromechanical coupling coefficient (k_(31)) increased by 30%, and an extremely high value of 0.44 was achieved for the oriented ceramics.