Patent ID: 7365958

Claim:
A multilayer ceramic capacitor, comprising: a capacitor body wherein dielectric layers and internal electrode layers are alternately laminated, the dielectric layers having a plurality of crystal grains sintered through a grain boundary layer; and an external electrode that is formed at both ends of the capacitor body, wherein (a) crystal grains constituting the dielectric layers have a mean grain size of not more than 0.2 μm; (b) the crystal grains are mainly composed of barium titanate; and (c) when the volume per unit cell V bulk is represented by a product of lattice constant (a, b, c) figured out from the X-ray diffraction pattern of the dielectric layers and the volume per unit cell V powder is represented by a product of lattice constant (a, b, c) figured out from the X-ray diffraction pattern of crystal grains obtained by grinding the dielectric layers, V bulk and V powder satisfy the relation Of V bulk /V powder ≧1.005.