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High Velocity Acoustical Head Wave on Surface of ST Quartz |
| WANG Cheng-hao;LIU Yuan;HE Shi-tang;HUANG Xin |
| Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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WANG Cheng-hao, LIU Yuan, HE Shi-tang et al 1999 Chin. Phys. Lett. 16 740-741 |
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Abstract According to surface transient excitation theory of elastic wave for piezoelectric crystal, in the surface of a piezoelectric crystal can exist acoustical high velocity head wave except the general surface acoustic wave (SAW). Such a mode is to propagate with the group velocity of the longitudinal bulk wave along the crystal surface. For ST quartz its value is 5.744xl03m/s, which agrees with our experiments. The fact that the longitudinal head wave mode has a high propagation velocity offers potential applications for high frequency SAW devices.
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| Keywords:
43.35.Pt
77.65.Dq
43.20.Jr
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Published: 01 October 1999
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| PACS: |
43.35.Pt
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(Surface waves in solids and liquids)
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77.65.Dq
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(Acoustoelectric effects and surface acoustic waves (SAW) in piezoelectrics)
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43.20.Jr
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(Velocity and attenuation of elastic and poroelastic waves)
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