Multilayer ceramic electronic component and dielectric ceramic composition
AssigneeTaiyo Yuden Co., Ltd.
InventorKazuki MISAWA
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Abstract
A multilayer ceramic electronic component includes a dielectric layer including first crystal grains and second crystal grains, the first crystal grains having a perovskite structure represented by a general formula ABO3 and having a core portion containing molybdenum and a shell portion, the shell portion covering the core portion and containing a rare earth element and manganese, the second crystal grains including, as a main component, a barium titanate-based composite oxide and having an elemental ratio of barium to titanium of 0.70 or less, internal electrode layers sandwiching the dielectric layer, and external electrodes electrically connected to the internal electrode layers, respectively.
Claims9
A multilayer ceramic electronic component comprising:
- a dielectric layer including first crystal grains and second crystal grains, the first crystal grains having a perovskite structure represented by a general formula ABO3 and having a core portion containing molybdenum and a shell portion, the shell portion covering the core portion and containing a rare earth element and manganese, the second crystal grains including as a main component, a barium-titanate-based composite oxide having an elemental ratio of barium to titanium of 0.70 or less;
- internal electrode layers sandwiching the dielectric layer;
- and
- external electrodes electrically connected to the internal electrode layers, respectively.
A dielectric ceramic composition, comprising:
- first crystal grains having a perovskite structure represented by a general formula ABO3, each first crystal grain having a core portion containing molybdenum and a shell portion, the shell portion covering the core portion and containing a rare earth element and manganese;
- and
- second crystal grains whose main component is a barium titanate-based composite oxide in which an elemental ratio of barium to titanium is 0.70 or less.
Dependencies are inferred from the claim text.