Bismuth-Based Oxyborate Piezoelectric Crystals: Growth and Electro-Elastic Properties

Abstract

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 α-BiB 3 O 6 (α-BIBO) and Bi 2 ZnB 2 O 7 (BZBO) crystals are reported. Centimeter-sized α-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 α-BIBO and BZBO samples, respectively. Moreover, the electro-elastic properties of α-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 α-BIBO and BZBO crystals, respectively. The optimal crystal cuts with face shear mode were designed and found to be (YZt)/−53 • (or (YZt)/37 • cut) for α-BIBO crystal, and (ZXt)/±45 • 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.

The optimal high-temperature piezoelectric cuts of α-BiB3O6 crystals and their fatigue behaviors at high-temperature and low-pressure

“…52 The crystal orientation and the dimension ratio of the crystal cuts related to different vibrational modes of the BIBO crystal were shown in the previous literature. 44,47,50 The independent piezoelectric coefficients were examined between 20 and 650 °C. For the LE mode d 22 , a high-temperature quasistatic measuring instrument (TZED-600) was utilized, due to the large error for detecting the resonant and anti-resonant peaks using the impedance method.…”

“…37,48,49 Previous studies have reported the single crystal growth technical details, the nonlinear optical properties and the piezoelectric coefficients of BIBO crystals, 2,45,47 but are still far way to explore high temperature piezoelectric sensors due to insuficient studies on the piezoelectric properties under harsh environments (hightemperature and low-pressure). 50,51 In this work, the optimal piezoelectric sensitive cuts relevant to the longitudinal extensional vibration mode (LE), face shear vibration mode (FS) and thickness shear vibration mode (TS) were discussed and analyzed. Furthermore, the temperature dependence of the piezoelectric properties for BIBO crystal under harsh environments was investigated over the temperature range of 20-650 °C under pressure of 5 × 10 −3 Pa.…”

“…37,48,49 Previous studies have reported the single crystal growth technical details, the nonlinear optical properties and the piezoelectric coefficients of BIBO crystals, 2,45,47 but are still far way to explore high temperature piezoelectric sensors due to insuficient studies on the piezoelectric properties under harsh environments (high-temperature and low-pressure). 50,51…”

Electro-elastic features of α-BiB3O6 crystals with a monoclinic symmetry

“…1(a)) were grown using the conventional top-seeded solution growth method, and the growth progress was similar to those in reported studies. [18][19][20] The growing crystal can be oriented based on the orientation of the seed crystal and strong habitual facets. The relationship between the physical and crystallographic axes according to the IEEE standard for piezoelectricity is shown in Fig.…”

Crystal Growth of Multifunctional Borates and Related Materials

“…It was estimated that piezoelectric ringing in this metaborate crystal occurred at the 150, 205, 445, 600, and 750 kHz frequencies of high voltage pulses. F. Chan et al also reported single crystal growth and electro-elastic properties of α-BiB 3 O 6 and Bi 2 ZnB 2 O 7 crystals with the largest effective piezoelectric coefficients being in the order of 14.8 pC/N and 8.9 pC/N, respectively [20]. Finally, G. Kuzmicheva et.…”