Excitation of Surface Acoustic Waves and Lamb Waves at Superhigh Frequencies in a Diamond-Based Piezoelectric Layered Structure | Научно-инновационный портал СФУ

Excitation of Surface Acoustic Waves and Lamb Waves at Superhigh Frequencies in a Diamond-Based Piezoelectric Layered Structure

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.1134/S1063771021010024

Ключевые слова: aluminum nitride, bulk acoustic wave, lamb wave, piezoelectric layered structure, single-crystal diamond, surface acoustic wave

Аннотация: Abstract: The authors have carried out an experimental and theoretical study of the propagation of surface acoustic waves (SAW)—Rayleigh, Sezawa and SH-modes, as well as Lamb waves in Me-IDT/AlN/(100) diamond (Me = Pt, Al) piezoelectric layered structures with a SAW resonator configuration. The types of modes are identified and the dispersion curves of the phase velocities and electromechanical coupling coefficients for SAW and Lamb waves are obtained. The excitation of Lamb waves up to a frequency of 7.3 GHz was observed experimentally. The resonance curves for Lamb waves have a higher quality factor Q compared to surface acoustic waves propagating on the same substrates. At a frequency of about 7 GHz, the loaded Q-factor reaches 3400, while the quality parameter Q × f = 2.4 × 1013 Hz. An unusual effect of a significant increase in the Q-factor of Lamb waves with the frequency increasing from 760 at 1.5 GHz to 3400 at 7 GHz is noted. © 2021, Pleiades Publishing, Ltd.

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Издание

Журнал: Acoustical Physics

Выпуск журнала: Vol. 67, Is. 1

Номера страниц: 38-46

ISSN журнала: 10637710

Издатель: Pleiades journals

Авторы

  • Kvashnin G.M. (Technol Inst Superhard & New Carbon Mat, Troitsk 142190, Russia)
  • Sorokin B.P. (Technol Inst Superhard & New Carbon Mat, Troitsk 142190, Russia)
  • Burkov S.I. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)

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