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Impact of phase structure on piezoelectric properties of textured lead-free ceramics

Journal Article


Abstract


  • The impact of phase structure on piezoelectric performances of <001> textured Na0.5Bi0.5TiO3 (NBT) based lead-free ceramics was studied, including 0.88NBT-0.08K0.5Bi0.5TiO3-0.04BaTiO3 (88NBT) with morphotropic phase boundary (MPB) composition and 0.90NBT-0.07K0.5Bi0.5TiO3-0.03BaTiO3 (90NBT) with rhombohedral phase. Both textured ceramics exhibit a high Lotgering factor, being on the order of f~96%. The piezoelectric coefficients of the textured 88NBT and 90NBT ceramics are increased by 20% and 60%, respectively, comparing to their randomly oriented ceramics. The piezoelectric enhancement of 90NBT textured ceramic is three times higher than 88NBT, revealing the phase structure plays a significant role in enhancing the piezoelectric performances of textured ceramics. Of particular significance is that the 90NBT textured ceramic exhibits almost hysteresis-free strain behavior. The enhanced piezoelectric property with minimal strain hysteresis is attributed to the <001> poled rhombohedral engineered domain configuration.

Publication Date


  • 2020

Citation


  • Gao, X., Dong, N., Xia, F., Guo, Q., Hao, H., Liu, H., & Zhang, S. (2020). Impact of phase structure on piezoelectric properties of textured lead-free ceramics. Crystals, 10(5). doi:10.3390/cryst10050367

Scopus Eid


  • 2-s2.0-85085000061

Volume


  • 10

Issue


  • 5

Abstract


  • The impact of phase structure on piezoelectric performances of <001> textured Na0.5Bi0.5TiO3 (NBT) based lead-free ceramics was studied, including 0.88NBT-0.08K0.5Bi0.5TiO3-0.04BaTiO3 (88NBT) with morphotropic phase boundary (MPB) composition and 0.90NBT-0.07K0.5Bi0.5TiO3-0.03BaTiO3 (90NBT) with rhombohedral phase. Both textured ceramics exhibit a high Lotgering factor, being on the order of f~96%. The piezoelectric coefficients of the textured 88NBT and 90NBT ceramics are increased by 20% and 60%, respectively, comparing to their randomly oriented ceramics. The piezoelectric enhancement of 90NBT textured ceramic is three times higher than 88NBT, revealing the phase structure plays a significant role in enhancing the piezoelectric performances of textured ceramics. Of particular significance is that the 90NBT textured ceramic exhibits almost hysteresis-free strain behavior. The enhanced piezoelectric property with minimal strain hysteresis is attributed to the <001> poled rhombohedral engineered domain configuration.

Publication Date


  • 2020

Citation


  • Gao, X., Dong, N., Xia, F., Guo, Q., Hao, H., Liu, H., & Zhang, S. (2020). Impact of phase structure on piezoelectric properties of textured lead-free ceramics. Crystals, 10(5). doi:10.3390/cryst10050367

Scopus Eid


  • 2-s2.0-85085000061

Volume


  • 10

Issue


  • 5