Dielectric composition and multilayer capacitor comprising the same

A multilayer capacitor comprising:

• a body including dielectric layers each having an average thickness of 0.4 μm or less, and internal electrodes each having an average thickness of 0.4 μm or less;
• and
• an external electrode disposed on the body to be connected to the internal electrodes,
• wherein the dielectric layers contain dielectric grains including a base material powder including barium titanate (BaTiO3), and shell portions including an additive employed therein and grain boundaries present among the dielectric grains, wherein the shell portions of the dielectric layers include zirconium (Zr) within a range from greater than 0.5 moles to 1.5 moles or less, with respect to 100 moles of the base material powder.

A multilayer capacitor comprising:

• a body comprising a plurality of first internal electrodes and a plurality of second internal electrodes that are alternately stacked with dielectric layers therebetween;
• and
• first and second external electrodes connected to the plurality of first internal electrodes and to the plurality of second internal electrodes, respectively,
• wherein the dielectric layers include a perovskite material having A ions larger than B ions, in which a plurality of B ion sites are occupied by ions having a same valence as the B ions and a different radius therefrom.