PIEZOELECTRIC CERAMIC MATERIAL Russian patent published in 1995 - IPC

FIELD: piezoelectric ceramic materials. SUBSTANCE: piezoelectric ceramic material based on lithium methaniobate contains calcium, lithium, silicon and boric oxides at the following relation of components, mass percent; LiNbO₃ 95.9 to 96.5; Li₂O 0.55 to 0.66; CaO 0.50 to 0.75; B₂O₃ 0.27 to 0.31; SiO₂ 2.06 to 2.40. The material is characterized by a low value of dielectric constant, it is stable within a wide range of operating temperatures and mechanical loads. It is manufactured according to a standard ceramic technology, which simplifies and cheapens the process of manufacture of piezoceramic products at stable high values of piezoelectric modulus d_зз and specific electric resistance. EFFECT: simplified technology. 2 tbl