DIELECTRIC CERAMICS AND A MULTI-LAYERED CERAMIC CONDENSER CAPABLE OF MINIATURIZING THE MULTI-LAYERED CERAMIC CONDENSER

摘要

PURPOSE: Dielectric ceramics and a multi-layered ceramic condenser are provided to increase the dielectric constant of the dielectric ceramics by increasing Re content in secondary phase particles with respect to the total Re content of the dielectric ceramics.;CONSTITUTION: Dielectric ceramics(11) include ABO_3 as a major component and Re as an auxiliary component. The A includes Ba, and either of Ca or Sr. The B includes Ti, and either of Zr or Hf. The Re is at least one of Dy, Ho, Sc, Y, Gd, Er, Yb, Tb, Tm, and Lu. The dielectric ceramics include a primary particle(12) and a secondary phase particle(13). The composition of the secondary phase particle is different from that of the primary particle. The Re content of the secondary phase particle is more than or equal to 50% with respect to the total Re content of the dielectric ceramics.;COPYRIGHT KIPO 2011