PERFORMANCE IMPROVEMENT OF CTGS AND YCOB CRYSTALS FOR HIGH TEMPERATURE PIEZOELECTRIC ACCELEROMETER APPLICATIONS

摘要：

　　In this paper, the compression model and shear model for high temperature piezoelectric accelerometer based on the CTGS and YCOB crystal cuts were studied.Based on the piezoelectric equation, the sensitivities (S) of the compression-mode and shear-mode accelerometer were derived and results shown that sensitivities S were affected by the piezoelectric constants d33/d11 and d26/d15 both for the compression-mode and shear-mode accelerometers.Temperature dependence of the piezoelectric constants was studied from room temperature to 800℃ by the impedance analyzer, and the optimum crystal cuts with larger piezoelectric constant and good temperature stability were designed.It was found that for YCOB crystals, the variations of effective piezoelectric d33 and d26 could be optimized to be <5%, while for CTGS crystals, only the effective piezoelectric d26 can be optimized to <7% over the whole temperature range.These results are helpful for designing high temperature piezoelectric accelerometers based on the CTGS and YCOB crystals.

关键词： Piezoelectric crystal High-temperature Accelerometer YCOB CTGS

作者: Ling-feng KONG Fa-peng YU Li-feng QIN Xiu-feng CHENG Xian ZHAO

作者单位: State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P.R.China;Department State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P.R.China Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, P.R.China

会议类型: 国际会议

会议名称: The 2017 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2017全国压电和声波理论及器件技术研讨会)

会议地点: 成都

会议语种:英文

页码: 117-120

在线出版日期: 2017-10-27（万方平台首次上网日期，不代表论文的发表时间）