Patent ID: 7061748
Filing Date: 2006-06-13
Classification: B32B,C04B

Abstract:
1. A multilayer ceramic capacitor having a multilayer structure in which dielectric layers and internal electrode layers are alternately stacked, wherein each of said dielectric layers comprises: a main component containing barium titanate; a first auxiliary component composed of at least one kind selected from the group consisting of MgO, CaG, BaO, and SrO; a second auxiliary component containing a silicon oxide as a main component; a third auxiliary component composed of at least one kind selected from the group consisting of V a fourth auxiliary component composed of an oxide of at least one kind of first rare-earth element (R a fifth auxiliary component composed of CaZrO wherein, with respect to 100 mol of the main component containing barium titanate, the content (mol) of the first auxiliary component is given as y the content (mol) of the second auxiliary component is given as y the content (mol) of the third auxiliary component is given as y the content (mol) of the fourth auxiliary component is given as y the content (mol) of the fifth auxiliary component is given as y a value of y a value of y a value of y a value of y a value of y wherein Zr diffuses in crystal grains forming said dielectric layers and, in the crystal grains each having an average grain diameter, a depth of a diffusion layer of Zr is 10 to 35% relative to the diameter of the crystal grain, and wherein said depth of the diffusion of Zr is adjusted with a liquid phase addition of organic metal salts of Ca and Zr.