Patent ID: 6259186
Filing Date: 2001-07-10
Classification: H03H

Abstract:
A surface acoustic wave functional element comprising a (012) sapphire substrate and a LiNb.sub.x Ta.sub.1-x O.sub.3 film (`x` is 0 or more and 1 or less) on said (012) sapphire substrate, wherein the LiNb.sub.x Ta.sub.1-x O.sub.3 film is a (012) LiNb.sub.x Ta.sub.1-x O.sub.3 (`x` is 0 or more and 1 or less), a crystal axis of said sapphire substrate and a crystal axis of said (012) LiNb.sub.x Ta.sub.1-x O.sub.3 film are parallel to each other, a Love wave is propagated as a surface acoustic wave, and a propagation direction of said surface acoustic wave is in a direction perpendicular to the C-axis projection line direction of the crystal axis of said sapphire substrate or said (012) LiNb.sub.x Ta.sub.1-x O.sub.3 film.