标题：Bismuth-Based Oxyborate Piezoelectric Crystals: Growth and Electro-Elastic Properties
作者：Chen, Feifei; Cheng, Xiufeng; Yu, Fapeng; Wang, Chunlei; Zhao, Xian
作者机构：[Chen, Feifei; Cheng, Xiufeng; Yu, Fapeng; Zhao, Xian] Shandong Univ, Adv Res Ctr Opt, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R Ch 更多
通讯作者地址：[Yu, FP]Shandong Univ, Adv Res Ctr Opt, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.
关键词：-BiB3O6; Bi2ZnB2O7; single crystal growth; electro-elastic properties
摘要：The non-centrosymmetric bismuth-based oxyborate crystals have been extensively studied for non-linear optical, opto-electric and piezoelectric applications. In this work, single crystal growth and electro-elastic properties of -BiB3O6 (-BIBO) and Bi2ZnB2O7 (BZBO) crystals are reported. Centimeter-sized -BIBO and BZBO crystals were grown by using the Kyropoulos method. High resolution X-ray diffraction tests were performed to assess the crystal quality. The full-width at half-maximum values (FWHM) of the rocking curves were evaluated to be 35.35 arcsec and 47.85 arcsec for -BIBO and BZBO samples, respectively. Moreover, the electro-elastic properties of -BIBO and BZBO crystals are discussed and summarized, based on which the radial extensional and the face shear vibration modes were studied for potential acoustic device applications. The radial extensional mode electro-mechanical coupling factors k(p) were evaluated and found to be 32.0% and 5.5% for -BIBO and BZBO crystals, respectively. The optimal crystal cuts with face shear mode were designed and found to be (YZt)/-53 degrees (or (YZt)/37 degrees cut) for -BIBO crystal, and (ZXt)/+/- 45 degrees cut for BZBO crystal, with the largest effective piezoelectric coefficients being in the order of 14.8 pC/N and 8.9 pC/N, respectively.