Abstract: A dielectric composition may include a first dielectric powder; and a second dielectric powder having an average grain size smaller than that of the first dielectric powder and included in the dielectric composition in an amount of 0.01 to 1.5 parts by weight based on 100 parts by weight of the first dielectric powder, and a multilayer ceramic capacitor formed using the same. A multilayer ceramic capacitor may include: a ceramic body including dielectric layers; first and second internal electrodes disposed in the ceramic body to face each other with the respective dielectric layers interposed therebetween; and first and second external electrodes electrically connected to the first and second internal electrodes, respectively. The dielectric layers are formed of a dielectric composition including a first dielectric powder and a second dielectric powder having an average grain size smaller than that of the first dielectric powder and included in the dielectric composition in an amount of 0.01 to 1.

Abstract: A dielectric composition may include a first dielectric powder; and a second dielectric powder having an average grain size smaller than that of the first dielectric powder and included in the dielectric composition in an amount of 0.01 to 1.5 parts by weight based on 100 parts by weight of the first dielectric powder, and a multilayer ceramic capacitor formed using the same. A multilayer ceramic capacitor may include: a ceramic body including dielectric layers; first and second internal electrodes disposed in the ceramic body to face each other with the respective dielectric layers interposed therebetween; and first and second external electrodes electrically connected to the first and second internal electrodes, respectively. The dielectric layers are formed of a dielectric composition including a first dielectric powder and a second dielectric powder having an average grain size smaller than that of the first dielectric powder and included in the dielectric composition in an amount of 0.01 to 1.

Abstract: There is provided a multilayer ceramic capacitor, including: a ceramic body including dielectric layers; first and second internal electrodes disposed to face each other with the dielectric layer interposed therebetween within the ceramic body; a first external electrode electrically connected to the first internal electrodes; and a second external electrode electrically connected to the second internal electrodes, wherein the dielectric layer includes 40 to 99 wt % of barium titanate (BaTiO3) powder having an average grain size of 0.1 ?m to 0.8 ?m and 1 to 60 wt % of barium titanate zirconate (Ba(Ti1-xZrx)O3) having an average grain size of 0.2 to 2.0 ?m.

Abstract: There is provided a dielectric composition, including: a basic powder including BamTiO3(0.995?m?1.010); a first subcomponent including 0.1 to 0.6 mole of zirconium (Zr) oxide or carbide, based on 100 moles of the basic powder; a second subcomponent including 0.8 to 6.0 moles of oxide or carbide including at least one of magnesium (Mg), strontium (Sr), and barium (Ba); a third subcomponent including 0.2 to 1.8 moles of oxide including at least one rare earth element; a fourth subcomponent including 0.05 to 0.30 mole of oxide including at least one transition metal; a fifth subcomponent including 0.05 to 0.35 mole of oxide including at least one of vanadium (V), niobium (Nb), and tantalum (Ta); and a sixth subcomponent including 0.5 to 4.0 moles of oxide including at least one of silicon (Si) and aluminum (Al).

Abstract: There is provided a dielectric composition, including: a basic powder including BamTiO3(0.995?m?1.010); a first subcomponent including 0.1 to 0.6 mole of zirconium (Zr) oxide or carbide, based on 100 moles of the basic powder; a second subcomponent including 0.8 to 6.0 moles of oxide or carbide including at least one of magnesium (Mg), strontium (Sr), and barium (Ba); a third subcomponent including 0.2 to 1.8 moles of oxide including at least one rare earth element; a fourth subcomponent including 0.05 to 0.30 mole of oxide including at least one transition metal; a fifth subcomponent including 0.05 to 0.35 mole of oxide including at least one of vanadium (V), niobium (Nb), and tantalum (Ta); and a sixth subcomponent including 0.5 to 4.0 moles of oxide including at least one of silicon (Si) and aluminum (Al).

Abstract: The present invention relates to a ceramic composition for a piezoelectric actuator and a piezoelectric actuator comprising the same. The ceramic composition for piezoelectric actuator includes a piezoelectric ceramic powder expressed by a Chemical Formula: (1-x)Pb(Zr(1-y)Tiy)O3-xPb(Ni1/3Nb2/3)O3, wherein x is 0.25 to 0.4 and y is 0.4 to 0.7; and a CuO powder and a PbO powder forming a liquid-phase compound at a sintering temperature or less of the piezoelectric ceramic powder. The ceramic composition for a piezoelectric actuator according to the present invention exhibits excellent piezoelectric characteristics and allows for low-temperature firing.