Dielectric ceramic and multilayer ceramic capacitor

摘要

A dielectric ceramic that contains Al and Si, as well as a barium titanate-based compound having a perovskite type crystal structure as a primary component. The total molar amount of Al and Si is 2 to 4 parts by mole with respect to 100 parts by mole of Ti, and the content ratio of Al with respect to the total molar amount is 0.2 or less (excluding 0) on the molar ratio basis. The dielectric ceramic may also contain at least one specific rare earth element Re, such as Gd, Tb, or Dy.

主权项

1. A dielectric ceramic containing:
a barium titanate-based compound having a perovskite type crystal structure as a primary component; Al; Si; Mg; Mn; V; and Zr, wherein a total of content molar amounts of the Al and the Si is 2 parts by mole to 4 parts by mole with respect to 100 parts by mole of Ti, a content ratio of the Al with respect to the total of content molar amounts of the Al and the Si is 0.2 or less, excluding 0, on a molar ratio basis, and with respect to 100 parts by mole of the Ti,
the Mg is 0.10 parts by mole to 2.0 parts by mole,the Mn is 0.01 parts by mole to 0.30 parts by mole,the V is 0.01 parts by mole to 0.30 parts by mole, andthe Zr is 0.20 parts by mole to 0.80 parts by mole, respectively.