Dielectric composition and multilayer electronic device
A dielectric composition contains barium titanate, an oxide of yttrium, and an oxide of magnesium. 0.70≤α/β≤1.10 is satisfied, where a content of the oxide of yttrium is α mol part in terms of Y 2 O 3 , and a content of the oxide of magnesium is β mol part in terms of MgO.
1. A dielectric composition comprising barium titanate, an oxide of yttrium, and an oxide of magnesium,
wherein 0.70≤α/β≤0.81 is satisfied, where a content of the oxide of yttrium is α mol part in terms of Y 2 O 3 , and a content of the oxide of magnesium is β mol part in terms of MgO, and
wherein a content of magnesium is 1.12 to 1.85 mol parts in terms of MgO provided that a content of barium titanate is 100 mol parts in terms of BaTiO 3 .
2. The dielectric composition according to claim 1 , wherein a content of vanadium is 0.02 mol parts or more in terms of V 2 O 5 provided that a content of barium titanate is 100 mol parts in terms of BaTiO 3 .
3. The dielectric composition according to claim 1 , wherein a content of yttrium is 0.78 to 2.03 mol parts in terms of Y 2 O 3 provided that a content of barium titanate is 100 mol parts in terms of BaTiO 3 .
4. The dielectric composition according to claim 1 , wherein a content of silicon is 1.39 to 2.80 mol parts in terms of SiO 2 provided that a content of barium titanate is 100 mol parts in terms of BaTiO 3 .
5. A multilayer electronic device comprising a dielectric layer, an internal electrode layer, and an external electrode,
wherein the dielectric layer is composed of the dielectric composition according to claim 1 .
6. The multilayer electronic device according to claim 5 , wherein an area ratio occupied by segregated regions of Y on a cross section of the multilayer electronic device is 2.0% or less.
7. The multilayer electronic device according to claim 5 , wherein an area ratio occupied by segregated regions of Mg on a cross section of the multilayer electronic device is 2.0% or less.
8. A multilayer electronic device comprising a dielectric layer, an internal electrode layer, and an external electrode,
wherein the dielectric composition comprising barium titanate, an oxide of yttrium, and an oxide of magnesium,
wherein 0.70≤α/β≤1.10 is satisfied, where a content of the oxide of yttrium is α mol part in terms of Y 2 O 3 , and a content of the oxide of magnesium is β mol part in terms of MgO,
wherein a content of yttrium is 0.78 to 2.03 mol parts in terms of Y 2 O 3 provided that a content of barium titanate is 100 mol parts in terms of BaTiO 3 ,
a content of magnesium is 1.12 to 1.85 mol parts in terms of MgO provided that a content of barium titanate is 100 mol parts in terms of BaTiO 3 , and
wherein an area ratio occupied by segregated regions of Y on a cross section of the multilayer electronic device is 2.0% or less, and
an area ratio occupied by segregated regions of Mg on a cross section of the multilayer electronic device is 2.0% or less.
9. The dielectric composition according to claim 8 , wherein a content of vanadium is 0.02 mol parts or more in terms of V 2 O 5 provided that a content of barium titanate is 100 mol parts in terms of BaTiO 3 .
10. The dielectric composition according to claim 8 , wherein a content of silicon is 1.39 to 2.80 mol parts in terms of SiO 2 provided that a content of barium titanate is 100 mol parts in terms of BaTiO 3 .