High-performance, high-temperature piezoelectric BiB3O6 crystals. Issue 2 (18th November 2014)

• Record Type: Journal Article
• Authors: Yu, Fapeng; Lu, Qingming; Zhang, Shujun; Wang, Hewei; Cheng, Xiufeng; Zhao, Xian
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 2(2015)
• Page Start: 329
• Page End: 338
• Publication Date: 2014-11-18
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c4tc02112f
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : BiB3 O6 crystals possess large piezoelectric coefficients and high-temperature stability of their piezoelectric properties, which is promising for piezoelectric sensor applications. Abstract : High-performance piezoelectric materials are desirable for piezoelectric sensing applications. In this paper, piezoelectric α-BiB3 O6 (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 d 14 = 10.9, d 16 = 13.9, d 21 = 16.7, d 22 = 40.0, d 23 = 2.5, d 25 = 4.3, d 34 = 18.7 and d 36 = 13.0 pC/N, with corresponding piezoelectric voltage coefficients g 14 = 122, g 16 = 144, g 21 = 225, g 22 = 538, g 23 = 34, g 25 = 58, g 34 = 165 and g 36 = 121 × 10 −3 V m N −1 at room temperature (RT). Of particular significance is that the receiving sensitivity of BIBO crystals was found to be 47.2 pm 2 N −1, nearly one order of magnitude higher than that of LiNbO3 crystals. Moreover, the BIBO crystals were found to possess a high mechanical quality factor Q m (13 000 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 × 10 8 Ω 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.