NDLI: Quasilongitudinal pseudosurface acoustic waves in trigonal crystals

Content Provider	IEEE Xplore Digital Library
Author	Kozlov, A.I.
Copyright Year	1995
Description	Author affiliation: Inst. of Radio Eng. & Electron., Acad. of Sci., Moscow, Russia (Kozlov, A.I.)
Abstract	Quasilongitudinal pseudosurface acoustic wave (QLPSAW) progresses along a solid surface at a velocity exceeding those of the two slowest bulk waves and radiates them. Calculated properties of the wave in the X-axis direction of La/sub 3/Ga/sub 5/SiO/sub 14/ and of SiO/sub 2/ as well as on some doubly rotated cuts of LiNbO/sub 3/ and LiTaO/sub 3/ are discussed. Along the [100] axis of langasite QLPSAW is found, its velocity is less than that of longitudinal bulk wave and its attenuation coefficient is about 10 dB/wavelength. QLPSAW can exist in the same direction of quartz crystal too, but its velocity is greater than the fastest bulk wave speed, and attenuation is of the order of 10/sup -3/-10/sup -2/ dB/wavelength. In lithium niobate and lithium tantalate crystals directions of possible existence of QLPSAW form bounded regions. Attenuation of the wave tends to zero at the boundaries of the regions and its phase velocity is close to the speed of the longitudinal bulk wave.
Starting Page	197
Ending Page	200
File Size	259278
Page Count	4
File Format	PDF
ISBN	0780329406
ISSN	10510117
DOI	10.1109/ULTSYM.1995.495567
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-11-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acoustic waves Surface acoustic waves Solids Attenuation Acoustic propagation Crystals Lithium Anisotropic magnetoresistance SAW filters Glass
Content Type	Text
Resource Type	Article

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