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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Scanning electron microscopy observation of surface acoustic wavepropagation in the LiNbO3 crystals with regular domainstructures
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Scanning electron microscopy observation of surface acoustic wavepropagation in the LiNbO3 crystals with regular domainstructures

机译：扫描电子显微镜观察具有规则畴结构的LiNbO3晶体中表面声波的传播

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摘要

This paper reports a scanning electron microscopy investigation ofnsurface acoustic wave propagation in the LiNbO3 crystals withnregular domain structures. The regular domain structures in the LiNbOn3 crystals were formed by the method of the thermo-electricntreatment after growth. We investigated two modes of the interactionnbetween the surface acoustic waves and regular domain structures in thenLiNbO3 crystals: excitation of the surface acoustic waves bynthe curved regular domain structure, and propagation of the surfacenacoustic waves along and across the regular domain structures. It isnshown that the regular domain structure in the first case can be used asnan interdigital transducer for excitation of the surface acoustic wavesnthrough the longitudinal piezoelectric effect. In the second mode of theninteraction we observed that the regular domain structure can be used asnan acoustic wave-guide in the process of the propagation of thentraveling surface acoustic waves along the regular domain structure.nAlso, we demonstrate the reflection of the surface acoustic waves fromnthe domain walls in the process of surface acoustic wave propagationnacross the regular domain structure
机译：本文报道了扫描电子显微镜研究表面声波在具有不规则畴结构的LiNbO3晶体中的传播。 LiNbOn3晶体中的规则畴结构是通过生长后的热电法形成的。我们研究了LiNbO3晶体中表面声波与规则畴结构之间相互作用的两种模式：弯曲的规则畴结构激发表面声波，以及沿和穿过规则畴结构传播表面声波。没有显示出在第一种情况下的规则域结构可以用作南叉指换能器，以通过纵向压电效应激励表面声波。在第二种相互作用模式中，我们观察到在行进的表面声波沿着规则域结构传播的过程中，规则域结构可以用作声纳波导。声波在整个规则畴结构中传播过程中的畴壁

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