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US 12,577,167 B2Granted
Dielectric composition and multilayer ceramic electronic device
AssigneeTDK Corporation
InventorsToshihiro Iguchi, Yuichiro Sueda, Ryota Namiki
Life of this patent
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Abstract
A dielectric composition includes dielectric particles, grain boundary phases, and segregations. The dielectric particles each include a perovskite compound represented by ABO3 as a main component. The grain boundary phases are located between the dielectric particles. The segregations exist in a part of the grain boundary phases and include at least Al, Si, and O. A molar ratio (Al/(Al+Si)) of an Al content to a total content of Al and Si in the segregations is 0.45 or more and 0.75 or less.
Claims7
A dielectric composition comprising:
- dielectric particles each including a perovskite compound represented by ABO3 as a main component;
- grain boundary phases located between the dielectric particles;
- and
- segregations existing in a part of the grain boundary phases and including at least Al, Si, and O,
- wherein a molar ratio (Al/(Al+Si)) of an Al content to a total content of Al and Si in the segregations is 0.60 or more and 0.75 or less,
- wherein the segregations further include Ba and Ti, and
- wherein a Ba/Ti ratio in the segregations is 1.20 or more.
4 more elements
Dependencies are inferred from the claim text.