Dielectric ceramic composition and an electronic component
View Patent ↗A dielectric ceramic composition comprises, a main component including barium titanate, a first subcomponent including MgO, a second subcomponent including sintering aids of SiO 2 compound, a third subcomponent including at least one of V 2 O 5 , Nb 2 O 5 and WO 3 , a fourth A subcomponent including R A oxide (note that, R A is at least one selected from Tb, Gd and Dy), a fourth B subcomponent including R B oxide (note that, R B is at least one selected from Ho, Y and Yb), and a fifth subcomponent including MnO or Cr 2 O 3 .
1. A dielectric ceramic composition comprising:
a main component including barium titanate;
a first subcomponent including MgO;
a second subcomponent including sintering aids of (Ba, Ca) x SiO 2+x , where x is from 0.8 to 1.2;
a third subcomponent including V 2 O 5 ;
a fourth A subcomponent including R A oxide, where R A is at least one selected from Tb and Dy;
a fourth B subcomponent including R B oxide, where R B is at least one selected from Ho, Y, and Yb; and
a fifth subcomponent including MnO,
wherein:
a ratio of the respective subcomponents to 100 mol of said main component is:
the first subcomponent: 2.2 to 2.8 mol,
the second subcomponent: 2.4 to 2.55 mol,
the third subcomponent: 0.05 to 0.10 mol,
the fourth A subcomponent: 2.3 to 2.8 mol,
the fourth B subcomponent: 0.05 to 0.5 mol, and
the fifth subcomponent: 0.1 to 0.4 mol,
the mol ratio of said R A oxide to R B oxide is shown by R A /R B , R A /R B is 5.8 to 56, and
an average crystal particle size after firing is 0.1 to 0.2 μm.
2. An electronic component comprising;
a dielectric layer composed of dielectric ceramic composition as set forth in claim 1 , and
an internal electrode layer.