Lateral-Field-Excited Electromechanical Resonances in a LiNbO3 Crystal Plate with a Ferroelectric Inversion Layer
Lateral-Field-Excited Electromechanical Resonances in a LiNbO3 Crystal Plate with a Ferroelectric Inversion Layer
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DOI：
10.1080/00150193.2015.1100929
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发表时间：
2015-09
期刊：
影响因子：
0.8
通讯作者：
T. Ma;Ji Wang;Jianke Du;Jia-shi Yang
中科院分区：
文献类型：
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作者：
T. Ma;Ji Wang;Jianke Du;Jia-shi Yang
研究了具有铁电反型层的铌酸锂晶体在横向电场作用下的振动。结果表明，该板的电导纳表现出一系列的共振被确定为与板的厚度剪切模式。发现共振特性和共振附近的位移分布对反型层的相对厚度敏感，并讨论了有关的机理。结果表明，它是可能的，实现双频模式体声波传感器使用横向场激励铌酸锂板与铁电反转层。
We investigated vibrations excited by a lateral electrical field in a LiNbO3 crystal plate with a ferroelectric inversion layer. It is shown that the electrical admittance of the plate exhibits a series of resonances which are identified to be associated with thickness-shear modes of the plate. The resonance characteristics and the disp-lacement distributions near resonances are found to be sensitive to the relative thickness of the inversion layer and the related mechanisms are discussed. The results indicate that it is possible to achieve dual-frequency mode bulk acoustic wave sensors using lateral-field-excited LiNbO3 plates with a ferroelectric inversion layer.