TY - JOUR
T1 - Electro-elastic characterization of Ca3TaGa3Si2O14 crystals for lateral-field-excitation acoustic wave sensing applications
AU - Ma, Tingfeng
AU - Hou, Shuai
AU - Yu, Fapeng
AU - Xie, Chao
AU - Zhang, Shujun
AU - Wang, Ji
AU - Du, Jianke
AU - Zhan, Jie
AU - Cheng, Xiufeng
AU - Wang, Shenglai
AU - Zhao, Xian
N1 - Funding Information:
This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51372138 , 11772163 and 11402128 ), the Fundamental Research Funds of Shandong University ( 2015JC039 ), State Key Laboratory of Crystal Material, ( Shandong University ) (No. KF1412 ) and the Public Welfare Project of Zhejiang Province (No. 2015C33063 ).
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - The Ca3TaGa3Si2O14 (CTGS) crystals with ordered structure are promising for piezoelectric sensing applications. In this work, the electro-elastic constants of CTGS crystals were determined taking advantage of impedance and pulse-echo methods. The relative dielectric permittivities ε11T/ε0 and ε33T/ε0 are 17.5 and 21.8, the elastic stiffness constants c11E, c12E, c13E, c14E, c33E, c44E and c66E are 15.63, 7.52, 8.55, 0.05, 22.51, 4.15 and 4.06 × 1010 N/m2, while the piezoelectric coefficients d11 and d14 are 4.17 and −13.7 pC/N, respectively. In addition, the properties of lateral-field-excitation (LFE) acoustic wave were studied, where crystal cut with pure-LFE was designed and LFE acoustic wave prototype was fabricated. The mechanical quality factor Qm for CTGS based pure-LFE device in distilled water was obtained to be 1400, nearly two times that of La3Ga5SiO14 based device, potential for sensing applications in liquid-phase environment.
AB - The Ca3TaGa3Si2O14 (CTGS) crystals with ordered structure are promising for piezoelectric sensing applications. In this work, the electro-elastic constants of CTGS crystals were determined taking advantage of impedance and pulse-echo methods. The relative dielectric permittivities ε11T/ε0 and ε33T/ε0 are 17.5 and 21.8, the elastic stiffness constants c11E, c12E, c13E, c14E, c33E, c44E and c66E are 15.63, 7.52, 8.55, 0.05, 22.51, 4.15 and 4.06 × 1010 N/m2, while the piezoelectric coefficients d11 and d14 are 4.17 and −13.7 pC/N, respectively. In addition, the properties of lateral-field-excitation (LFE) acoustic wave were studied, where crystal cut with pure-LFE was designed and LFE acoustic wave prototype was fabricated. The mechanical quality factor Qm for CTGS based pure-LFE device in distilled water was obtained to be 1400, nearly two times that of La3Ga5SiO14 based device, potential for sensing applications in liquid-phase environment.
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U2 - 10.1016/j.jallcom.2017.08.284
DO - 10.1016/j.jallcom.2017.08.284
M3 - Article
AN - SCOPUS:85028945731
SN - 0925-8388
VL - 728
SP - 518
EP - 524
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -