Ceramic electronic device and the production method
AssigneeTDK Corporation
InventorsKazushige Ito, Akira Sato
Life of this patent
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Abstract
A ceramic electronic device including a dielectric layer, wherein the dielectric layer includes a main component expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.995≦m≦1.010 and a ratio of Ba and Ti satisfies 0.995≦Ba/Ti≦1.010, and a subcomponent (a sixth subcomponent) including an oxide of Al; and a content of the Al compound is 0 to 4.0 moles (note that 0 is not included) in terms of Al2O3 with respect to 100 moles of the main component; and preferably, the dielectric layer includes a segregation phase, and the segregation phase includes an oxide of Al.
Claims2
A production method of a ceramic electronic device including a dielectric layer, wherein:
- a granular Al compound having a maximum particle diameter of in a range of 0.2 to 5.1 μm is used as a material of a subcomponent for forming said dielectric layer;
- and
- a content of said Al compound is 0 to 4.0 moles (note that 0 is not include) in terms of Al2O3 with respect to 100 moles of the main component.
A production method of a ceramic electronic composition including a dielectric layer, wherein:
- a granular Al compound, wherein a difference (D100−D50) of a D50 diameter of 50% equivalent diameter and a D100 diameter of 100% equivalent diameter is 67.2 μm or smaller, is used as a material of a subcomponent for forming said dielectric layer;
- and
- a content of said Al compound is 0 to 4.0 moles (note that 0 is not included) in terms of Al2O3 with respect to 100 moles of the main component.
Dependencies are inferred from the claim text.