Multilayer ceramic capacitor and manufacturing method thereof

A manufacturing method of a multilayer ceramic capacitor, the manufacturing method comprising:

• preparing a dielectric slurry by mixing barium titanate-based main component powder, and secondary component powder including silicon (Si)-containing compound, dysprosium (Dy)-containing compound, and terbium (Tb)-containing compound;
• preparing a dielectric green sheet by utilizing the dielectric slurry, and forming a conductive paste layer on a surface of the dielectric green sheet;
• manufacturing a dielectric green sheet laminate by stacking a plurality of the dielectric green sheets on which the conductive paste layer is formed;
• manufacturing a capacitor body including a plurality of dielectric layers and a plurality of internal electrode layers by firing the dielectric green sheet laminate;
• and
• forming an external electrode on a first surface of the capacitor body,
• wherein the dielectric layer comprises a plurality of dielectric grains and a grain boundary located between dielectric grains adjacent to each other,
• wherein the plurality of dielectric grains comprises a barium titanate-based main component including barium (Ba) and titanium (Ti),
• wherein the grain boundary includes silicon (Si), dysprosium (Dy), and terbium (Tb), and
• wherein a content of each of silicon (Si), dysprosium (Dy), and terbium (Tb) included in the grain boundary is in order of terbium (Tb)<dysprosium (Dy)<silicon (Si).