The fundamental shear horizontal (SH0) waves have been proved to be a very useful method for non-destructive testing due to their non-dispersive characteristics. Currently, although several methods have been proposed to generate SH0 waves, it is still a challenge to obtain pure SH0 wave mode efficiently. Herein, in this study, non-centrosymmetric YBa₃(PO₄)₃ (YBP) and YbBa₃(PO₄)₃ (YbBP) crystals with pure face-shear mode were grown via the traditional Czochralski pulling method at temperatures above 1800 °C. High resolution X-ray diffraction was carried out to evaluate the crystalline quality. Results showed that the YBP and YbBP crystals were of good quality, with the full width at half-maxima being on the order of 42.5″ and 52.3″, respectively. Moreover, the full set of electro-elastic constants for the YBP and YbBP crystals were determined and collated using a combination of impedance and pulse-echo methods. The piezoelectric coefficient (d₁₄) of the YBP and YbBP crystals were determined to be 10.6 pC/N and 11.4 pC/N, respectively, corresponding to the electromechanical coupling coefficient (k₁₄) equal to 15.4% and 15.9%, exhibiting large and pure face-shear vibration mode. Collectively, these results indicate that the YBP and YbBP crystals are promising for acoustic wave sensing application.

由于基本水平剪切波（SH0）具有非分散特性，因此已被证明是用于非破坏性测试的非常有用的方法。当前，尽管已经提出了几种产生SH0波的方法，但是有效地获得纯SH0波模式仍然是一个挑战。这里，在本研究中，非中心对称的YBa ₃（PO ₄）₃（YBP）和YbBa ₃（PO ₄）₃通过传统的切克劳斯基拉法在1800°C以上的温度下生长具有纯面剪切模式的（YbBP）晶体。进行高分辨率X射线衍射以评估晶体质量。结果表明，YBP和YbBP晶体质量良好，半峰全宽分别为42.5“和52.3”。此外，使用阻抗和脉冲回波方法的组合，确定并整理了YBP和YbBP晶体的全套电弹性常数。确定YBP和YbBP晶体的压电系数（d ₁₄）分别为10.6 pC / N和11.4 pC / N，与机电耦合系数（k ₁₄）分别等于15.4％和15.9％，表现出大而纯的面剪振动模式。总体而言，这些结果表明YBP和YbBP晶体有望用于声波传感应用。