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Issue 2, 2015
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High-performance, high-temperature piezoelectric BiB3O6 crystals

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Abstract

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 × 10−3 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 pm2 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 Qm (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 × 108 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.

Graphical abstract: High-performance, high-temperature piezoelectric BiB3O6 crystals

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Publication details

The article was received on 19 Sep 2014, accepted on 30 Oct 2014 and first published on 18 Nov 2014


Article type: Paper
DOI: 10.1039/C4TC02112F
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. C, 2015,3, 329-338
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    High-performance, high-temperature piezoelectric BiB3O6 crystals

    F. Yu, Q. Lu, S. Zhang, H. Wang, X. Cheng and X. Zhao, J. Mater. Chem. C, 2015, 3, 329
    DOI: 10.1039/C4TC02112F

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