FIELD: surface acoustic wave systems. SUBSTANCE: temperature-compensated piezocrystal has at least one flat surface. Crystal element is composed of GaPO4 and its flat surface is determined by Euler angles λ in 0 deg. region, μ between 40 and 75 deg. (better between 50 and 60 deg.), and θ in 0 deg. region. EFFECT: improved thermal stability. 8 cl, 3 dwg
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