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Ultrahigh electromechanical coupling and its thermal stability in (Na1/2Bi1/2)TiO3-based lead-free single crystals

Journal Article


Abstract


  • In this work, we report the ultrahigh electromechanical coupling performance of NBT-6BT-KNN lead-free single crystal at room temperature. The thickness mode electromechanical coupling coefficient (kt) and the 31 mode electromechanical coupling coefficient (k31) reach 69.0% and 45.7%, respectively, which are superior to the PZT-5H lead-based ceramics of kt ~ 60% and k31~39%. In addition, the evolution of the crystal structure and domain morphology is revealed by Raman scattering spectra, a polarizing microscope and piezoelectric force microscopy characterization.

Publication Date


  • 2020

Citation


  • Chen, C., Yang, L., Jiang, X., Huang, X., Gao, X., Tu, N., . . . Luo, H. (2020). Ultrahigh electromechanical coupling and its thermal stability in (Na1/2Bi1/2)TiO3-based lead-free single crystals. Crystals, 10(6). doi:10.3390/cryst10060435

Scopus Eid


  • 2-s2.0-85085879400

Volume


  • 10

Issue


  • 6

Place Of Publication


Abstract


  • In this work, we report the ultrahigh electromechanical coupling performance of NBT-6BT-KNN lead-free single crystal at room temperature. The thickness mode electromechanical coupling coefficient (kt) and the 31 mode electromechanical coupling coefficient (k31) reach 69.0% and 45.7%, respectively, which are superior to the PZT-5H lead-based ceramics of kt ~ 60% and k31~39%. In addition, the evolution of the crystal structure and domain morphology is revealed by Raman scattering spectra, a polarizing microscope and piezoelectric force microscopy characterization.

Publication Date


  • 2020

Citation


  • Chen, C., Yang, L., Jiang, X., Huang, X., Gao, X., Tu, N., . . . Luo, H. (2020). Ultrahigh electromechanical coupling and its thermal stability in (Na1/2Bi1/2)TiO3-based lead-free single crystals. Crystals, 10(6). doi:10.3390/cryst10060435

Scopus Eid


  • 2-s2.0-85085879400

Volume


  • 10

Issue


  • 6

Place Of Publication