| abstract |
(57) [Summary] (Modified) [Objective] To provide a dielectric ceramic composition powder capable of obtaining a large dielectric constant and a low-cost, highly reliable, small-sized and large-capacity laminated ceramic capacitor. [Structure] Perovskite type oxide powder represented by the general formula ABO 3 in which alkali metal oxides contained as impurities are 0.03% by weight or less and halogen is 0.03% by weight or less (the group A element is Ba or Ca. Yes, the B group element is Ti, Zr or Nb. ) Of at least one of the following general formulas: {(Ba 1-x Ca x ) O} m ( Ti 1-op Zr o Nb p ) O 2 + p / 2 , where x, o, p and m are 0 ≦ x ≦ 0.20, 0 <o ≦ 0.25, As 100% of the main component satisfying the relationship of 0 ≦ p ≦ 0.015 and 1.000 ≦ m ≦ 1.03, The oxides of Mn, Fe, Cr, Co and Ni were replaced with MnO. When expressed as 2 , Fe 2 O 3 , Cr 2 O 3 , CoO and NiO, 0.02 to 2.0 mol of at least one kind is added and contained, and the specific surface area is 8.0 m 2 / g or less. It is a dielectric ceramic composition powder. |