Multilayer ceramic capacitor

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 V2O5, MoO3, and WO3;
• a fourth auxiliary component composed of an oxide of at least one kind of first rare-earth element (R1) selected from the group consisting of Sc, Er, Tm, Yb, and Lu;
• and
• a fifth auxiliary component composed of CaZrO3 or a mixture (CaO+ZrO2) of CaO and ZrO2,
• wherein, with respect to 100 mol of the main component containing barium titanate,
• the content (mol) of the first auxiliary component is given as y1,
• the content (mol) of the second auxiliary component is given as y2,
• the content (mol) of the third auxiliary component is given as y3,
• the content (mol) of the fourth auxiliary component is given as y4, and
• the content (mol) of the fifth auxiliary component is given as y5,
• a value of y1 falls within the range of 0.1 to 3.0 mol,
• a value of y2 falls within the range of 2 to 10 mol,
• a value of y3 falls within the range of 0.01 to 0.5 mol,
• a value of y4 falls within the range of 0.5 to 7 mol (representing the content of R1 alone), and
• a value of y5 is 5 mol or less (not including zero),
• 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.