| 简介 |
A dielectric ceramic material containing BaTiO3 as a primary component and a rare earth element as an additional component, wherein the material satisfies the relation 0.7<=M/N so as to make the density of the rare earth metal uniform between crystal grains, and the material satisfies the relation 0.8<=L/M so as to make the density of the rare earth metal uniform in a crystal grain. In these relations, M represents the number of crystal grains satisfying the relation 0.5<=Di/D; N represents the number of crystal grains constituting the ceramic material; and L represents the number of crystal grains satisfying the relations 0.5<=Di/D and Si/Di<=0.3, wherein Di represents the mean density of the rare earth element in an arbitrary crystal grain i, D represents the mean density of the rare earth element in the entirety of the ceramic material, and Si represents the standard deviation of the density of the rare earth element in the crystal grain i. |
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