Abstract: Dielectric particles including a main component including barium titanate and R oxide (where R is at least one element selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu), wherein when defining the size of the dielectric particles as “D” and defining the region of a depth from the particle surface of 0% to 10% of said D as a surface region, a region of a depth from the particle surface of more than 10% to less than 40% of the D as an intermediate region, and a region of a depth from the particle surface of 40% to 50% of the D as a center region, in the surface region, the ratio of content of the R oxide decreases from the surface side toward the center of the dielectric particles and in the center region, the ratio of content of the R oxide increases from the surface side toward the center of the dielectric particles.

Abstract: A production method of a dielectric ceramic composition, comprising a main component comprised of barium titanate, a fourth subcomponent comprised of an oxide of R1 (note that R1 is at least one kind selected from a first element group composed of rare earth elements having a value of effective ionic radius for coordination number 9 of less than 108 pm) and a fifth sub component comprised of an oxide of R2 (note that R2 is at least one kind selected from a second element group composed of rare earth elements having a value of effective ionic radius for coordination number 9 of 108 pm to 113 pm); comprising the steps of obtaining a post-reaction material by bringing the main component material reacting with a part of the fourth subcomponent material and/or a part of the fifth subcomponent material, and adding remaining materials of the fourth subcomponent and the fifth subcomponent to be included in the dielectric ceramic composition to the post-reaction material; wherein a ratio M1/M2 of the number of moles M

Abstract: A production method of a dielectric ceramic composition comprising a main component including barium titanate expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.990<m<1.010, and a fourth subcomponent including an oxide of R (note that R is at least one kind selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu); comprising the step of obtaining a post-reaction material by bringing a material of said main component react with at least a part of a material of said fourth subcomponent in advance: by which it is possible to provide a dielectric ceramic composition having improved specific permittivity without deteriorating other electric characteristics (for example, a temperature characteristic of capacitance, insulation resistance, an accelerated lifetime of insulation resistance and a dielectric loss).

Abstract: A production method of a dielectric ceramic composition using a reacted material obtained by making a main component including barium titanate react with a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu). According to the invention, a dielectric ceramic composition capable of improving the specific permittivity without deteriorating other electric characteristics (for example, a temperature characteristic of the capacitance, insulation resistance, accelerated lifetime of the insulation resistance and dielectric loss), and the production method can be provided.