TY - JOUR
T1 - High temperature piezoelectric properties of yttrium calcium oxyborate single crystals
AU - Yu, Fapeng
AU - Zhang, Shujun
AU - Zhao, Xian
AU - Yuan, Duorong
AU - Wang, Qingming
AU - Shrout, Thomas R.
PY - 2010/6
Y1 - 2010/6
N2 - The piezoelectric single crystal yttrium calcium oxyborate, YCa4O(BO3)3, was studied as a function of orientation and temperature. The resistivity of Y-cut samples was found to be 2.7 × 107 Ω cm at 950 °C, three orders of magnitude higher than langatate crystals. The electromechanical coupling k26 and piezoelectric d26 were found to be 22% and 10 pC/N at room temperature for (ZXw)-30°-cut samples, respectively, maintaining similar values at elevated temperature of 950 °C, exhibiting temperature independent behavior. Furthermore, the highest temperature frequency coefficient was obtained in (ZXw)-33°-cut samples, being -91 ppm/K. The temperature independent piezoelectric properties, together with the high resistivity and mechanical quality factor Q (~2000 at 950 °C), suggest the YCOB crystal to be a good candidate for high temperature sensing applications.
AB - The piezoelectric single crystal yttrium calcium oxyborate, YCa4O(BO3)3, was studied as a function of orientation and temperature. The resistivity of Y-cut samples was found to be 2.7 × 107 Ω cm at 950 °C, three orders of magnitude higher than langatate crystals. The electromechanical coupling k26 and piezoelectric d26 were found to be 22% and 10 pC/N at room temperature for (ZXw)-30°-cut samples, respectively, maintaining similar values at elevated temperature of 950 °C, exhibiting temperature independent behavior. Furthermore, the highest temperature frequency coefficient was obtained in (ZXw)-33°-cut samples, being -91 ppm/K. The temperature independent piezoelectric properties, together with the high resistivity and mechanical quality factor Q (~2000 at 950 °C), suggest the YCOB crystal to be a good candidate for high temperature sensing applications.
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U2 - 10.1002/pssr.201004068
DO - 10.1002/pssr.201004068
M3 - Article
AN - SCOPUS:77953192511
SN - 1862-6254
VL - 4
SP - 103
EP - 105
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
IS - 5-6
ER -