Patent ID: 7498082
Filing Date: 2009-03-03
Classification: H01G,Y10T

Abstract:
1. A method of production of a dielectric ceramic composition including dielectric particles comprising steps of: preparing a dielectric material including: dividing said dielectric material into at least two; calcining the divided dielectric materials under different conditions; mixing the calcined dielectric materials; and firing the mixed calcined dielectric materials; wherein said dielectric ceramic composition comprises: a main ingredient phase having barium titanate as its main ingredient and a diffusion phase present at the periphery of said main ingredient phase, wherein when an average value of the depth where said subingredient element present at said diffusion phase diffuses from a surface of said diffusion phase toward a center of said dielectric particle is designated as an average diffusion depth, a dispersion of the average diffusion depth among the dielectric particles is, in terms of CV value, 5 to 30%.