COMPOSITION FOR THIN-FILM CAPACITOR DEVICE, HIGH DIELECTRIC CONSTANT INSULATOR FILM, THIN-FILM CAPACITOR DEVICE, THIN-FILM MULTILAYER CAPACITOR, ELECTRONIC CIRCUIT AND ELECTRONIC DEVICE

摘要

A composition for thin-film capacitor devices containing a first bismuth lamellar compound and a second bismuth lamellar compound at an arbitrary mixture ratio is disclosed. The first bismuth lamellar compound displays a positive temperature characteristic, i.e. as the temperature increases the relative dielectric constant increases, at least in a part of a predetermined temperature range. The second bismuth lamellar compound displays a negative temperature characteristic, i.e. as the temperature increases the relative dielectric constant decreases, at least in a part of the predetermined temperature range. Specifically, a bismuth lamellar compounds represented by the composition formula CaxSr(1-x)Bi4Ti4O15.