标题：High-performance, high-temperature piezoelectric BiB3O6crystals
作者：Yu, Fapeng ;Lu, Qingming ;Zhang, Shujun ;Wang, Hewei ;Cheng, Xiufeng ;Zhao, Xian
作者机构：[Yu, Fapeng ;Wang, Hewei ;Cheng, Xiufeng ;Zhao, Xian ] State Key Laboratory of Crystal Materials, Shandong University, Jinan; 250100, China;[Zhang, Sh 更多
来源：Journal of Materials Chemistry C
摘要：High-performance piezoelectric materials are desirable for piezoelectric sensing applications. In this paper, piezoelectric α-BiB3O6(BIBO) crystals were explored for high temperature sensing. Dielectric, piezoelectric and electromechanical properties were evaluated by using the impedance method, from which the piezoelectric charge coefficients were determined to be d14= 10.9, d16= 13.9, d21= 16.7, d22= 40.0, d23= 2.5, d25= 4.3, d34= 18.7 and d36= 13.0 pC/N, with corresponding piezoelectric voltage coefficients g14= 122, g16= 144, g21= 225, g22= 538, g23= 34, g25= 58, g34= 165 and g36= 121 × 10-3V m N-1at room temperature (RT). Of particular significance is that the receiving sensitivity of BIBO crystals was found to be 47.2 pm2N-1, nearly one order of magnitude higher than that of LiNbO3crystals. Moreover, the BIBO crystals were found to possess a high mechanical quality factor Qm(13000 at RT and >1000 at 600 °C), low dielectric loss (<0.1% at RT and 15% at 600 °C and 1 kHz), high electrical resistivity (∼2.5 × 108Ω cm at 600 °C) and high temperature stability of piezoelectric coefficients (variations <±10%). All these properties demonstrate that BIBO crystals are promising for piezoelectric sensing over a broad temperature range. This journal is
© The Royal Society of Chemistry.