Synthesis, structure, and electrical and acoustic properties of Cs2Cd2(MoO4)3

We have studied the physicochemical and physical properties of a langbeinite-structure cesium cadmium molybdate (sp. gr. P2₁3, Z = 4, a = 11.239(1) ?). It has very low thermal expansion and possesses piezoelectric properties. We have constructed the section of the longitudinal piezoelectric surface for Cs₂Cd₂(MoO₄)₃ by a plane containing a threefold axis (body diagonal), along which the piezoelectric modulus has the highest value: 5.8 × 10⁻¹² C/N.