Dispersive properties of the fundamental rayleigh wave mode (M 11) in a heteroepitaxial zinc oxide film on a sapphire substrate

T. C. Lim, E. A. Kraut, B. R. Tittmann

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The dispersion characteristics of an anisotropic ZnO layer on an anisotropic sapphire substrate have been calculated for the fundamental Rayleigh mode. A typical example of the group delay as a function of frequency is illustrated. The time-bandwidth products for the linear regions of the group delay-frequency curves are tabulated. For the cases studied, it has been found that using the basal plane of ZnO on y-cut sapphire with propagation direction at right angles to the trigonal axis of sapphire yields the largest time-bandwidth product (902/in. for a layer thickness of 4μm).

Original languageEnglish (US)
Pages (from-to)34-36
Number of pages3
JournalApplied Physics Letters
Issue number1
StatePublished - Dec 1 1970


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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