Dielectric composition and multilayer ceramic capacitor
AssigneeMurata Manufacturing Co., Ltd.
InventorsDaiki Habu, Keisuke Nomura
Life of this patent
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Abstract
A dielectric composition that contains a first complex oxide represented by (BixNa1-x)TiO3—CaTiO3 and having a perovskite structure as a main component; and at least one second complex oxide having a perovskite structure selected from the group consisting of BaZrO3, SrZrO3, CaZrO3, NaNbO3, and NaTaO3 as an auxiliary component. A tolerance factor t when the at least one second complex oxide is BaZrO3, NaNbO3, or NaTaO3 is 0.9016≤t≤0.9035, a tolerance factor t when the at least one second complex oxide is SrZrO3 is 0.9005≤t≤0.9025, and a tolerance factor t when the at least one second complex oxide is CaZrO3 is 0.9000≤t≤0.9020.
Claims16
A dielectric composition comprising:
- a first oxide represented by (BixNa1-x) TiO3—CaTiO3, wherein 0<x<1 and having a perovskite structure as a main component;
- and
- at least one second oxide having a perovskite structure selected from the group consisting of BaZrO3, SrZrO3, CaZrO3, NaNbO3, and NaTaO3 as an auxiliary component, wherein
- when the at least one second oxide is BaZrO3, NaNbO3, or NaTaO3, a tolerance factor t is 0.9016≤t≤0.9035,
- when the at least one second oxide is SrZrO3, the tolerance factor t is 0.9005≤t≤0.9025, and
- when the at least one second oxide is CaZrO3, the tolerance factor t is 0.9000≤t≤0.9020.
Dependencies are inferred from the claim text.