[4] [4] WU J G,GAO X Y,CHEN J G,et al.Review of high temperature piezoelectric materials,devices,and applications［J］.Acta Physica Sinica,2018,67(20):30.

[5] [5] KAZYS R,VASKELIENE V.High temperature ultrasonic transducers:A review［J］.Sensors,2021,21(9):3200.

[6] [6] ZHANG S,YU F.Piezoelectric materials for high temperature sensors［J］.J Am Ceram Soc,2011,94(10):3153-3170.

[7] [7] JAFFE B.Piezoeletric ceramics［M］.London:Academic,1971.

[8] [8] EITEL R E,RANDALL C A,SHROUT T R,et al.New high temperature morphotropic phase boundary piezoelectrics based on Bi(Me)O3-PbTiO3 ceramics［J］.Jpn J Appl Phys,2001,40(10):5999-6002.

[9] [9] EITEL R E,RANDALL C A,SHROUT T R,et al.Preparation and characterization of high temperature perovskite ferroelectrics in the solid-solution (1-x)BiScO3-xPbTiO3［J］.Jpn J Appl Phys,2002,41(4):2099-2104.