Ceramic electronic component
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJin Woo Kim, Chang Hak Choi, Seok Hyun Yoon, Ki Yong Lee, Jong Myeong Jeon
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Abstract
A ceramic electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of grains and grain boundaries disposed between adjacent grains. The grain boundary includes a secondary phase including Sn, a rare-earth element, and a first subcomponent. The rare-earth element includes at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La, Gd and Yb. The first subcomponent includes at least one of Si, Mg, and Al.
Claims28
A ceramic electronic component, comprising:
- a body including a dielectric layer and an internal electrode;
- and
- an external electrode disposed on the body and connected to the internal electrode,
- wherein the dielectric layer includes a plurality of grains and grain boundaries disposed between adjacent grains,
- wherein the grain boundary includes a secondary phase including Sn, a rare-earth element, and a first subcomponent,
- wherein the rare-earth element includes at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La, Gd and Yb, and
- wherein the first subcomponent includes at least one of Si, Mg, and Al.
A ceramic electronic component, comprising:
- a body including a dielectric layer and an internal electrode;
- and
- an external electrode disposed on the body and connected to the internal electrode,
- wherein the dielectric layer includes a plurality of grains and grain boundaries disposed between adjacent grains,
- wherein the plurality of grains include at least one first grain,
- wherein the first grain has a core-shell structure including a core and a shell surrounding the core, and the shell of the first grain includes a first region surrounding the core and a second region surrounding the first region,
- wherein an average Sn content of the grain boundary is defined as Cg, Sn average contents of the core, the first region, and the second region of the first grain are defined as C1, C2 and C3, respectively, and C2, Cg, C3, and C1 satisfy C2>Cg>C3>C1, and satisfy one or more of Cg≥1.1*C3, Cg≥2.0*C1 and C2≥1.3*Cg.
A ceramic electronic component, comprising:
- a body including a dielectric layer and an internal electrode;
- and
- an external electrode disposed on the body and connected to the internal electrode,
- wherein the dielectric layer includes a plurality of grains and a grain boundary disposed between adjacent grains,
- wherein the plurality of grains include first grains, second grains, and third grains, the first grains, the second grains, and the third grains being different from each other,
- wherein each of the first grains has a core-shell structure including a core and a shell surrounding the core, and the shell of the first grain includes a first region surrounding the core and a second region surrounding the first region, and Sn average contents of the core, the first region, and the second region of the first grain are different from each other,
- each of the second grains has a core-shell structure including a core and a shell surrounding the core, and Sn average contents of the core and the shell of the second grain are different from each other,
- each the third grains includes Sn more uniformly distributed than the first grains and the second grains, and
- the number of the first grains is 5% or more and 50% or less of the total number of the plurality of grains.
Dependencies are inferred from the claim text.