Electro‐elastic properties of YCa4O(BO3)3 piezoelectric crystals
Electro‐elastic properties of YCa4O(BO3)3 piezoelectric crystals
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DOI：
10.1002/pssa.201330191
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
F. Yu;Shuai Hou;Shujun Zhang;Q. Lu;Xian Zhao
中科院分区：
文献类型：
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作者：
F. Yu;Shuai Hou;Shujun Zhang;Q. Lu;Xian Zhao
YCa_4O（BO_3）_3（YCOB）晶体是一种很有潜力的高温压电传感材料。在本文中，电弹性常数的完整矩阵，包括介电常数，弹性常数，和压电系数的确定。测得的相对介电常数分别为111 T/110 =9.65、122 T/110 =11.80、133 T/110 =9.55和133 T/110 =0.95。压电系数确定为d11 = 1.7，d12 = 3.9，d13 = −4.2，d15 = −1.1，d24 = 4.4，d26 = 7.9，d31 = −0.77，d32 = −2.5，d33 = 1.4，d35 = −5.0 pC N−1。此外，研究了YCOB晶体的压电串扰，发现（XZlw）45°/35°和（YXt）−30°晶体切割具有纯厚度剪切模式，具有相对较大的有效压电系数，分别为d15 = 8.8和d26 = 9.0 pC N−1。
YCa4O(BO3)3 (YCOB) crystal was reported to be a potential material for high temperature piezoelectric sensing applications. In this paper, the full matrix of electro‐elastic constants, including dielectric permittivities, elastic constants, and piezoelectric coefficients were determined. The relative dielectric permittivities were measured to be ϵ11T/ϵ0=9.65 , ϵ22T/ϵ0=11.80 , ϵ33T/ϵ0=9.55 , and ϵ13T/ϵ0=0.95 , respectively. The piezoelectric coefficients were determined to be d11 = 1.7, d12 = 3.9, d13 = −4.2, d15 = −1.1, d24 = 4.4, d26 = 7.9, d31 = −0.77, d32 = −2.5, d33 = 1.4, and d35 = −5.0 pC N−1. In addition, piezoelectric cross‐talks of YCOB crystals were investigated, where (XZlw)45°/35° and (YXt)−30° crystal cuts were found to possess pure thickness shear mode, with relatively large effective piezoelectric coefficients, being on the order of d15 = 8.8 and d26 = 9.0 pC N−1, respectively.