Dielectric ceramic composition, an electric component and a manufacturing method thereof
The present invention relates to a dielectric ceramic composition comprises a main component including a dielectric oxide having a composition shown by [(Ca 1-x Sr x )O] m [(Zr 1-y-z-α Ti y Hf 2 Mn α )O 2 ], note that, 0.991≦m≦1.010, 0≦x≦1, 0≦y≦0.1, 0<z≦0.02, 0.002<α≦0.05), 0.1 to 0.5 parts by mol of Al 2 O 3 and 0.5 to 5.0 parts by mol of SiO 2 with respect to 100 parts by mol of the main component. A purpose of the present invention is to provide a dielectric ceramic composition available to prevent the occurrence of crack even when a dielectric layer is made thin, for example, 2 μm or less, while maintaining various advantageous properties of a dielectric ceramic composition of [(CaSr)O] m [(TiZrHf)O 2 ] type.
1. A dielectric ceramic composition consisting of:
a main component including a dielectric oxide having a composition shown by
[(Ca 1-x Sr x )O] m [(Zr 1-y-z-α Ti y HF z Mn α )O 2 ] (2)
wherein m, x, y, z and α satisfy:
0.991≦m≦1.010;
0≦x≦1;
0≦y≦0.1;
0<z≦0.02;
0.002<α≦0.05;
0.1 to 0.5 parts by mol of Al 2 O 3 ; and
0.5 to 5.0 parts by mol of SiO 2 with respect to 100 parts by mol of the main component, wherein said SiO 2 is not a glass component.
2. An electronic component comprising a dielectric layer, wherein said dielectric layer is constituted by the dielectric ceramic composition as set forth in claim 1 .
3. An electronic component having an internal electrode and a dielectric layer stacked in alternating manner, wherein said dielectric layer is constituted by the dielectric ceramic composition as set forth in claim 1 .
4. The electronic component as set forth in claim 3 , wherein said internal electrode includes at least Ni.