TY - JOUR
T1 - High-temperature piezoelectric single crystal ReCa4O(BO 3)3 for sensor applications
AU - Zhang, Shujun
AU - Fei, Yiting
AU - Frantz, Eric
AU - Snyder, David W.
AU - Chai, Bruce H.T.
AU - Shrout, Thomas R.
PY - 2008/12
Y1 - 2008/12
N2 - Large-size and high-quality ReCa4O(BO3)3 (Re-COB, Re = rare earth) single crystals were grown by the Czochralski pulling method. In this work, the electrical properties were investigated at room temperature and elevated temperature for YCa4O(BO3) 3 (YCOB). The dielectric permittivity, piezoelectric strain coefficient, and electromechanical coupling were found to be on the order of 11, 6.5 pC/N, and 12.5%, respectively, with a high piezoelectric voltage coefficient around 0.067 Vm/N. The electrical resistivity of YCOB was found to be 2 × 108 Ohm·cm at 800°C, with Q values of ≤ 4,500 at 950°C. The frequency/temperature coefficient of YCOB was found to be-75 to-85ppm/K in the temperature range of 30 to 950°C, depending on the crystal orientations. Together with their temperature-independent properties, ReCOB crystals are promising candidates for sensing applications at elevated temperatures.
AB - Large-size and high-quality ReCa4O(BO3)3 (Re-COB, Re = rare earth) single crystals were grown by the Czochralski pulling method. In this work, the electrical properties were investigated at room temperature and elevated temperature for YCa4O(BO3) 3 (YCOB). The dielectric permittivity, piezoelectric strain coefficient, and electromechanical coupling were found to be on the order of 11, 6.5 pC/N, and 12.5%, respectively, with a high piezoelectric voltage coefficient around 0.067 Vm/N. The electrical resistivity of YCOB was found to be 2 × 108 Ohm·cm at 800°C, with Q values of ≤ 4,500 at 950°C. The frequency/temperature coefficient of YCOB was found to be-75 to-85ppm/K in the temperature range of 30 to 950°C, depending on the crystal orientations. Together with their temperature-independent properties, ReCOB crystals are promising candidates for sensing applications at elevated temperatures.
UR - http://www.scopus.com/inward/record.url?scp=67649469492&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649469492&partnerID=8YFLogxK
U2 - 10.1109/TUFFC.2008.985
DO - 10.1109/TUFFC.2008.985
M3 - Article
C2 - 19126494
AN - SCOPUS:67649469492
SN - 0885-3010
VL - 55
SP - 2703
EP - 2708
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 12
ER -