Kielczynski P J, Pajewski W, Szalewski M
Inst. of Fundamental Technol. Res., Polish Acad. of Sci., Warsaw, Poland.
IEEE Trans Ultrason Ferroelectr Freq Control. 1989;36(2):287-93. doi: 10.1109/58.19163.
Theoretical analysis and numerical results describing the propagation of SH (shear-horizontal) surface waves on piezoelectric ceramics with a depolarized surface layer are described. SH surface waves propagating in piezoelectric ceramics with a depolarized surface layer are shown to be a mixture of the Bleustein-Gulyaev surface wave, electrical potential, and the Love surface-wave mechanical displacement. Depolarization of the surface layer in piezoelectric ceramics produces strong dispersion and a multimode structure of the SH surface wave. The penetration depth of the SH surface waves propagating on an electrically free surface of a piezoelectric ceramic with a depolarized surface layer can be significantly smaller than that of the Bleustein-Gulyaev surface waves propagating on a free piezoelectric half-space. It is concluded that piezoelectric ceramics with a depolarized surface layer can be used in hybrid piezoelectric semiconductor convolvers of reduced size.
描述了关于具有去极化表面层的压电陶瓷上SH（水平剪切）表面波传播的理论分析和数值结果。结果表明，在具有去极化表面层的压电陶瓷中传播的SH表面波是布留斯泰因-古利亚耶夫表面波、电势和洛夫表面波机械位移的混合。压电陶瓷表面层的去极化会产生强烈的色散和SH表面波的多模结构。在具有去极化表面层的压电陶瓷自由表面上传播的SH表面波的穿透深度可能明显小于在自由压电半空间上传播的布留斯泰因-古利亚耶夫表面波的穿透深度。得出的结论是，具有去极化表面层的压电陶瓷可用于尺寸减小的混合压电半导体卷积器中。
