Multilayer ceramic capacitor and method of fabricating the same

A method of fabricating a multilayer ceramic capacitor comprising:

• preparing dielectric powder in which a surface of a barium titanate-based primary component containing barium (Ba) and titanium (Ti) is coated with inorganic element including silicon (Si);
• preparing a dielectric green sheet using a dielectric slurry including the dielectric powder and forming a conductive paste layer on a surface of the dielectric green sheet;
• laminating the dielectric green sheets on which the conductive paste layer is formed to prepare a dielectric green sheet laminate;
• firing the dielectric green sheet laminate to prepare a capacitor body including a dielectric layer and an internal electrode layer;
• and
• forming an external electrode on one surface of the capacitor body,
• wherein the dielectric layer includes a plurality of dielectric grains and grain boundaries located between the adjacent dielectric grains,
• the grain boundary includes a barium titanate-based primary component containing barium (Ba) and titanium (Ti), and inorganic element including silicon (Si), and
• a standard deviation of atom % of the inorganic element to a total amount of components of the grain boundary is 0.20 to 0.80, and the standard deviation is obtained as a square root of an average of the squares of the deviations.