Multilayer ceramic capacitor and method of fabricating the same

A method of fabricating a multilayer ceramic capacitor comprising:

• preparing dielectric slurry by mixing a barium titanate-based main component powder and a secondary component powder including a magnesium (Mg)-containing compound;
• fabricating a dielectric green sheet by using the dielectric slurry, and forming a conductive paste layer on a surface of the dielectric green sheet;
• fabricating a dielectric green sheet laminate by laminating the dielectric green sheet on which the conductive paste layer is formed;
• fabricating a capacitor body including a dielectric layer and an internal electrode layer by firing the dielectric green sheet laminate;
• and
• forming an external electrode on one side of the capacitor body,
• wherein the capacitor body includes at least one lost portion defined as a region in which continuity of the internal electrode layer is disconnected, and the lost portion includes a Mg concentrated region including magnesium (Mg) as a main element,
• the dielectric layer includes an interface adjacent region defined to be a region from an interface of the dielectric layer and the internal electrode layer to a depth surface of 80 nm to 100 nm into the dielectric layer, and the interface adjacent region includes magnesium (Mg), and
• the magnesium (Mg) included in the interface adjacent region of the dielectric layer has a lower atom % content than the magnesium (Mg) included in the Mg concentrated region of the lost portion.

A method of fabricating a multilayer ceramic capacitor comprising:

• preparing dielectric slurry by mixing a barium titanate-based main component powder and a secondary component powder including a magnesium (Mg)-containing compound;
• fabricating a dielectric green sheet by using the dielectric slurry, and forming a conductive paste layer on a surface of the dielectric green sheet;
• fabricating a dielectric green sheet laminate by laminating the dielectric green sheet on which the conductive paste layer is formed;
• fabricating a capacitor body including a dielectric layer and an internal electrode layer by firing the dielectric green sheet laminate;
• and
• forming an external electrode on one side of the capacitor body,
• wherein the firing the dielectric green sheet laminate is performed in conditions of a firing temperature of 1150° C. to 1250° C. and hydrogen (H2) concentration of 0.8% or lower.