Dielectric ceramic composition, electronic device, and method for producing the same

An electronic device having a dielectric layer, wherein

• said dielectric layer is comprised of a dielectric ceramic composition and
• said dielectric ceramic composition comprises at least
• a main component containing a dielectric oxide of a composition expressed by {(Sr1−xCax)O}m· (Ti1−yZry)O2 and
• a first subcomponent containing at least one type of compound selected from oxides of V, Nb, W, Ta, and Mo and/or compounds forming these oxides after firing, wherein
• the symbols m, x, and y showing the molar ratio of the composition in the formula contained in the main component are in relations of
• 0.94<m<1.08,
• 0≦x≦1.00, and
• 0≦y≦0.20 and
• the ratio of the first subcomponent with respect to 100 moles of the main component, which is converted to the metal element in the oxide, is 0.01 mole≦first subcomponent<2 moles.

A method of producing an electronic device comprising the steps of

• preparing a dielectric paste using a dielectric ceramic composition comprising at least
• a main component containing a dielectric oxide of a composition expressed by {(Sr1−xCax)O}m·(Ti1−yZry)O2 and
• a first subcomponent containing at least one type of compound selected from oxides of V, Nb, W, Ta, and Mo and/or compounds forming these oxides after firing, wherein
• the symbols m, x, and y showing the molar ratio of the composition in the formula contained in the main component are in relations of
• 0.94<m<1.08,
• 0≦x≦1.00, and
• 0≦y≦0.20 and
• the ratio of the first subcomponent with respect to 100 moles of the main component, which is converted to the metal element in the oxide, is 0.01 mole≦first subcomponent<2 moles;
• preparing a paste for internal electrodes;
• alternately stacking the dielectric paste and the internal electrode paste to obtain a multilayer body;
• firing the multilayer body to obtain a sintered body;
• and
• heat treating the sintered body in an atmosphere of an oxygen partial pressure of at least 10−4 Pa.