Acoustic-surface-wave properties of Bi ₁₂ SiO ₂₀ and related compounds

5 September 1974

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 10 (18) , 369-371
https://doi.org/10.1049/el:19740293

Abstract

Surface-wave velocities and electromechanical-coupling coefficients on the three principal planes of Bi₁₂SiO₂₀ are presented as a function of the propagation direction. The measured values show that Bi₁₂SiO₂₀ is a more useful material for acoustic-surface-wave devices than the better known Bi₁₂GeO₂₀. It has a higher electromechanical-coupling coefficient, so that devices made with it have a lower untuned insertion loss.

Keywords

BI12SIO20
ELECTROMECHANICAL COUPLING COEFFICIENTS
ACOUSTIC SURFACE WAVES
BISMUTH COMPOUNDS
PIEZOELECTRICITY
PIEZOELECTRIC MATERIALS
ACOUSTIC SURFACE WAVE DEVICES

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Acoustic-surface-wave properties of Bi 12 SiO 20 and related compounds

Abstract

Keywords

Acoustic-surface-wave properties of Bi ₁₂ SiO ₂₀ and related compounds