首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Measurements of Bleustein-Gulyaev waves in Li/sub 2/B/sub 4/O/sub 7/ crystal
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Measurements of Bleustein-Gulyaev waves in Li/sub 2/B/sub 4/O/sub 7/ crystal

机译:Li / sub 2 / B / sub 4 / O / sub 7 /晶体中Bleustein-Gulyaev波的测量

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摘要

Properties of Bleustein-Gulyaev waves (BGW) in Li/sub 2/B/sub 4/O/sub 7/ crystal were determined from the measured parameters of a delay line with double electrode interdigital transducers (IDT). Since the frequency response at the third harmonic was in good agreement with the SAW equivalent circuit model, it was possible to determine the BGW parameters. It was found that the coupling coefficient of BGW is very sensitive to aluminum layer thickness variations. Good agreement was found between calculated and measured parameters of BGW from an extrapolation to the zero layer thickness.
机译:Li / sub 2 / B / sub 4 / O / sub 7 /晶体中的Bleustein-Gulyaev波(BGW)的特性是通过使用双电极叉指式换能器(IDT)的延迟线的测量参数确定的。由于三次谐波的频率响应与SAW等效电路模型非常吻合,因此可以确定BGW参数。发现BGW的耦合系数对铝层厚度变化非常敏感。从外推到零层厚度,BGW的计算参数和测量参数之间找到了很好的一致性。

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