Dielectric porcelain composition and electronic part

A dielectric ceramic composition, comprising:

• a main component including a dielectric oxide expressed by a composition formula of {(Ca1-x Mex)O}m·(Zr1-y Tiy)O2, wherein “Me” indicating an element name in the composition formula is at least one of Sr, Mg and Ba, and “m”, “x” and “y” indicating composition mole ratios in the composition formula are in relationships of 0.8≦m≦1.3, 0≦x≦1.00 and 0≦y≦1.00;
• a first subcomponent including a V oxide;
• a second subcomponent including an Al oxide;
• a third subcomponent including a Mn oxide;
• and
• a fourth subcomponent including a composite oxide expressed by a composition formula of {(Baz, Ca1-z)O}v SiO2, wherein “z” and “v” indicating composition mole ratios in the composition formula are in relationships of 0≦z≦1 and 0.5≦v≦4.0;
• wherein ratios of respective components with respect to 100 moles of said main component are:
• the first subcomponent:
• 0 mole<first subcomponent<7 moles (wherein the value is a V oxide value in terms of V2O5);
• the second subcomponent:
• 0 mole<second subcomponent<15 moles (wherein the value is an Al oxide value in terms of Al2O3);
• the third subcomponent:
• 0 mole<third subcomponent<5 moles (wherein the value is in terms of a Mn element in the oxide);
• and
• the fourth subcomponent:
• 0 mole<fourth subcomponent<20 moles (wherein the value is in terms of the composite oxide).

An electronic device comprising a dielectric layer wherein:

• said dielectric layer is composed of a dielectric ceramic composition;
• and
• the dielectric ceramic composition comprises:
• a main component including a dielectric oxide expressed by a composition formula of {(Ca1-x Mex)O}m·(Zr1-y Tiy) O2, wherein “Me” indicating an element name in the composition formula is at least one of Sr, Mg and Ba, and “m”, “x” and “y” indicating composition mole ratios in the composition formula are in relationships of 0.8≦m≦1.3, 0≦x≦1.00 and 0≦y≦1.00;
• a first subcomponent including a V oxide;
• a second subcomponent including an Al oxide;
• a third subcomponent including a Mn oxide;
• and
• a fourth subcomponent including a composite oxide expressed by a composition formula of {(Baz, Ca1-z)O}v SiO2, wherein “z” and “v” indicating composition mole ratios in the composition formula are in relationships of 0≦z≦1 and 0.5≦v≦4.0;
• wherein ratios of respective components with respect to 100 moles of said main component are:
• the first subcomponent:
• 0 mole<first subcomponent<7 moles (wherein the value is a V oxide value in terms of V2O5);
• the second subcomponent:
• 0 mole<second subcomponent<15 moles (wherein the value is an Al oxide value in terms of Al2O3);
• the third subcomponent:
• 0 mole<third subcomponent<5 moles (wherein the value is in terms of a Mn element in the oxide);
• and
• the fourth subcomponent:
• 0 mole<fourth subcomponent<20 moles (wherein the value is in terms of the composite oxide).

A multilayer ceramic capacitor comprising an element body, wherein dielectric layers composed of a dielectric ceramic composition and internal electrode layers including a base metal as a main component are alternately stacked, wherein:

• said dielectric ceramic composition comprises:
• a main component including a dielectric oxide expressed by a composition formula of {(Ca1-x Srx)O}m·(Zr1-y Tiy)O2, wherein “m”, “x” and “y” indicating composition mole ratios in the composition formula are in relationships of 0.8≦m≦1.3, 0≦x≦1.00 and 0.1≦y ≦0.8;
• a first subcomponent including a V oxide;
• a second subcomponent including an Al oxide;
• a third subcomponent including a Mn oxide;
• and
• a fourth subcomponent including a composite oxide expressed by a composition formula of {(Baz, Ca1-z)O}v SiO2, wherein “z” and “v” indicating composition mole ratios in the composition formula are in relationships of 0≦z≦1 and 0.5≦v≦4.0;
• wherein ratios of respective components with respect to 100 moles of said main component are:
• the first subcomponent:
• 0 mole<first subcomponent<7 moles (wherein the value is a V oxide value in terms of V2O5);
• the second subcomponent:
• 0 mole<second subcomponent<15 moles (wherein the value is an Al oxide value in terms of Al2O3);
• the third subcomponent:
• 0 mole<third subcomponent<5 moles (wherein the value is in terms of a Mn element in the oxide);
• and
• the fourth subcomponent:
• 0 mole<fourth subcomponent<20 moles (wherein the value is in terms of the composite oxide).