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Scanning electron microscopy observation of surface acoustic wave propagation in the LiNbO/sub 3/ crystals with regular domain structures
- Source :
- IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 41:512-517
- Publication Year :
- 1994
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 1994.
-
Abstract
- This paper reports a scanning electron microscopy investigation of surface acoustic wave propagation in the LiNbO/sub 3/ crystals with regular domain structures. The regular domain structures in the LiNbO/sub 3/ crystals were formed by the method of the thermo-electric treatment after growth. We investigated two modes of the interaction between the surface acoustic waves and regular domain structures in the LiNbO/sub 3/ crystals: excitation of the surface acoustic waves by the curved regular domain structure, and propagation of the surface acoustic waves along and across the regular domain structures. It is shown that the regular domain structure in the first case can be used as an interdigital transducer for excitation of the surface acoustic waves through the longitudinal piezoelectric effect. In the second mode of the interaction we observed that the regular domain structure can be used as an acoustic wave-guide in the process of the propagation of the traveling surface acoustic waves along the regular domain structure. Also, we demonstrate the reflection of the surface acoustic waves from the domain walls in the process of surface acoustic wave propagation across the regular domain structure. >
- Subjects :
- Physical acoustics
Materials science
Acoustics and Ultrasonics
business.industry
Interdigital transducer
Acoustics
Surface acoustic wave
Acoustic wave
Piezoelectricity
Optics
Computer Science::Sound
Domain (ring theory)
Reflection (physics)
Electrical and Electronic Engineering
business
Instrumentation
Excitation
Subjects
Details
- ISSN :
- 08853010
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
- Accession number :
- edsair.doi...........3cb383143b950611de04d53e4a6e811d