# US 11,309,129 B2 · Dielectric ceramic composition and multilayer ceramic electronic component having the same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,309,129 B2
- Document ID: US11309129B2
- Status: Granted
- Kind: B2
- Application number: 16/777,182
- Filed: 2020-01-30
- Published: 2020-12-31
- Granted: 2022-04-19
- Earliest claimed: 2019-06-28
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Applicants: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Seok Hyun Yoon; Chan Hee Nam; Song Je Jeon; Chang Hak Choi
- Web page: https://patentgrep.com/patent/US11309129B2

## CPC

- H01G 4/1227: {based on alkaline earth titanates}
- C04B 35/4682: {based on BaTiO3 perovskite phase}
- C04B 2235/3206: Magnesium oxides or oxide-forming salts thereof
- C04B 2235/3208: Calcium oxide or oxide-forming salts thereof, e.g. lime
- C04B 2235/3224: Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B 2235/3225: Yttrium oxide or oxide-forming salts thereof
- C04B 2235/3239: Vanadium oxides, vanadates or oxide forming salts thereof, e.g. magnesium vanadate
- C04B 2235/3241: Chromium oxides, chromates, or oxide-forming salts thereof
- C04B 2235/3262: Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
- C04B 2235/3272: Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
- C04B 2235/3275: Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
- C04B 2235/3279: Nickel oxides, nickalates, or oxide-forming salts thereof
- C04B 2235/3281: Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O
- C04B 2235/3284: Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
- C04B 2235/3418: Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
- C04B 2235/6025: Tape casting, e.g. with a doctor blade
- C04B 2235/652: Reduction treatment (C04B2235/664 takes precedence)
- C04B 2235/6567: Treatment time
- C04B 2235/6582: Hydrogen containing atmosphere
- C04B 2235/663: Oxidative annealing
- C04B 2235/80: Phases present in the sintered or melt-cast ceramic products other than the main phase
- C04B 2237/346: Titania or titanates
- C04B 2237/68: Forming laminates or joining articles wherein at least one substrate contains at least two different parts of macro-size, e.g. one ceramic substrate layer containing an embedded conductor or electrode
- H01G 4/1209: {characterised by the ceramic dielectric material (H01G4/1272, H01G4/1281 take precedence)}
- H01G 4/30: Stacked capacitors (H01G4/33 takes precedence)
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE

## Abstract

A dielectric ceramic composition includes a base material main component of barium titanate and a subcomponent. A microstructure of the dielectric ceramic composition after sintering includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %, and an area ratio of the second grain to an area of the total grains is 70% to 95%.

## Claims

### Claim 1

A dielectric ceramic composition comprising:
a base material main component of barium titanate and a subcomponent,
wherein a microstructure of the dielectric ceramic composition after sintering includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %,
wherein an area ratio of the second grain to an area of a sum of the first and second grains is 70% to 95%,
wherein the base material main component comprises a first base material main component represented by (Ba1−xCax)TiO3 (x≤0.035) and a second base material main component represented by (Ba1−yCay)TiO3 (0.035≤y≤0.135), and
wherein a molar ratio of the first base material main component to the second base material main component is (1−z):z, in which 0.9≤z≤0.95.

### Claim 2 (depends on 1)

The dielectric ceramic composition of claim 1, wherein the subcomponent comprises at least one of:
a first subcomponent comprising at least one selected from the group consisting of a variable-valence acceptor element including at least one of manganese (Mn), vanadium (V), chromium (Cr), iron (Fe), nickel (Ni), cobalt (Co), copper (Cu), and zinc (Zn), oxides thereof, or carbonates thereof;
a second subcomponent comprising at least one of fixed-valence acceptor elements including Mg, oxides thereof, or carbonates thereof;
a third subcomponent comprising at least one selected from the group consisting of at least one of yttrium (Y), dysprosium (Dy), holmium (Ho), erbium (Er), gadolinium (Gd), cerium (Ce), neodymium (Nd), samarium (Sm), terbium (Tb), thulium (Tm), lanthanum (La) and ytterbium (Yb), oxides thereof, or carbonates thereof;
a fourth subcomponent comprising at least one selected from the group consisting of at least one of barium (Ba) and calcium (Ca), oxides thereof, or carbonates thereof; and
a fifth subcomponent comprising at least one selected from the group consisting of an oxide of a silicon (Si) element, a carbonate of a Si element, and a glass containing a Si element.

### Claim 3 (depends on 2)

The dielectric ceramic composition of claim 2, wherein a sum of contents of variable-valence acceptor elements of one or more of Mn, V, Cr, Fe, Ni, Co, Cu and Zn included in the first subcomponent is 0.1 to 2.0 mole parts based on 100 mole parts of the base material main component,
the content of the fixed-valence acceptor elements including Mg, included in the second subcomponent, is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component,
a sum of contents of one or more of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb included in the third subcomponent is 2.0 to 7 mole parts based on 100 mole parts of the base material main component,
a sum of contents of one or more of Ba and Ca included in the fourth subcomponent is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component, and
a content of the Si element included in the fifth subcomponent is 0.5 to 4.0 mole parts based on 100 mole parts of the base material main component.

### Claim 4 (depends on 1)

The dielectric ceramic composition of claim 1, wherein the subcomponent comprises a first subcomponent comprising at least one selected from the group consisting of variable-valence acceptor elements comprising at least one of Mn, V, Cr, Fe, Ni, Co, Cu and Zn, oxides thereof, or carbonates thereof; and
a sum of contents of variable-valence acceptor elements of one or more of Mn, V, Cr, Fe, Ni, Co, Cu and Zn included in the first subcomponent is 0.1 to 2.0 mole parts based on 100 mole parts of the base material main component.

### Claim 5 (depends on 1)

The dielectric ceramic composition of claim 1, wherein the subcomponent comprises a second subcomponent comprising at least one of fixed-valence acceptor elements comprising Mg, oxides thereof, or carbonates thereof; and
the content of the fixed-valence acceptor elements including Mg, included in the second subcomponent, is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component.

### Claim 6 (depends on 1)

The dielectric ceramic composition of claim 1, wherein the subcomponent comprises a third subcomponent comprising at least one selected from the group consisting of at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb, oxides thereof, or carbonates thereof; and
a sum of contents of one or more of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb included in the third subcomponent is 2.0 to 7 mole parts based on 100 mole parts of the base material main component.

### Claim 7 (depends on 1)

The dielectric ceramic composition of claim 1, wherein the subcomponent comprises a fourth subcomponent comprising at least one selected from the group consisting of at least one of Ba and Ca, oxides thereof, or carbonates thereof; and
a sum of contents of one or more of Ba and Ca included in the fourth subcomponent is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component.

### Claim 8 (depends on 1)

The dielectric ceramic composition of claim 1, wherein the subcomponent comprises a fifth subcomponent comprising at least one selected from the group consisting of an oxide of a Si element, a carbonate of a Si element, and a glass containing a Si element; and
a content of the Si element included in the fifth subcomponent is 0.5 to 4.0 mole parts based on 100 mole parts of the base material main component.

### Claim 9

A multilayer ceramic electronic component comprising:
a ceramic body including a dielectric layer and an internal electrode; and
an external electrode disposed on an external surface of the ceramic body and electrically connected to the internal electrode,
wherein a microstructure of the dielectric layer includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %,
wherein an area ratio of the second grain to an area of a sum of the first and second grains is 70% to 95%,
wherein the dielectric layer comprises a dielectric ceramic composition comprising a base material main component of barium titanate and a subcomponent,
wherein the base material main component includes a first base material main component represented by (Ba1−xCax)TiO3 (x≤0.035) and a second base material main component represented by (Ba1−yCay)TiO3 (0.035≤y≤0.135), and
wherein a molar ratio of the first base material main component to the second base material main component is (−z):z, in which 0.9≤z≤0.95.

### Claim 10 (depends on 9)

The multilayer ceramic electronic component of claim 9, wherein the subcomponent comprises at least one of:
a first subcomponent comprising at least one selected from the group consisting of a variable-valence acceptor element including at least one of manganese (Mn), vanadium (V), chromium (Cr), iron (Fe), nickel (Ni), cobalt (Co), copper (Cu), and zinc (Zn), oxides thereof, or carbonates thereof;
a second subcomponent comprising at least one of fixed-valence acceptor elements including Mg, oxides thereof, and carbonates thereof;
a third subcomponent comprising at least one selected from the group consisting of at least one of yttrium (Y), dysprosium (Dy), holmium (Ho), erbium (Er), gadolinium (Gd), cerium (Ce), neodymium (Nd), samarium (Sm), terbium (Tb), thulium (Tm), lanthanum (La) and ytterbium (Yb), oxides thereof, or carbonates thereof;
a fourth subcomponent comprising at least one selected from the group consisting of at least one of barium (Ba) and calcium (Ca), oxides thereof, or carbonates thereof; and
a fifth subcomponent comprising at least one selected from the group consisting of an oxide of a silicon (Si) element, a carbonate of a Si element, and a glass containing a Si element.

### Claim 11 (depends on 10)

The multilayer ceramic electronic component of claim 10, wherein a sum of contents of variable-valence acceptor elements of one or more of Mn, V, Cr, Fe, Ni, Co, Cu and Zn included in the first subcomponent is 0.1 to 2.0 mole parts based on 100 mole parts of the base material main component,
the content of the fixed-valence acceptor elements including Mg, included in the second subcomponent, is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component,
a sum of contents of one or more of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb included in the third subcomponent is 2.0 to 7 mole parts based on 100 mole parts of the base material main component,
a sum of contents of one or more of Ba and Ca included in the fourth subcomponent is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component, and
a content of the Si element included in the fifth subcomponent is 0.5 to 4.0 mole parts based on 100 mole parts of the base material main component.

### Claim 12 (depends on 9)

The multilayer ceramic electronic component of claim 9, wherein the subcomponent comprises a first subcomponent comprising at least one selected from the group consisting of variable-valence acceptor elements comprising at least one of Mn, V, Cr, Fe, Ni, Co, Cu and Zn, oxides thereof, or carbonates thereof; and
a sum of contents of variable-valence acceptor elements of one or more of Mn, V, Cr, Fe, Ni, Co, Cu and Zn included in the first subcomponent is 0.1 to 2.0 mole parts based on 100 mole parts of the base material main component.

### Claim 13 (depends on 9)

The multilayer ceramic electronic component of claim 9, wherein the subcomponent comprises a second subcomponent comprising at least one of fixed-valence acceptor elements comprising Mg, oxides thereof, or carbonates thereof; and
the content of the fixed-valence acceptor elements including Mg, included in the second subcomponent, is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component.

### Claim 14 (depends on 9)

The multilayer ceramic electronic component of claim 9, wherein the subcomponent comprises a third subcomponent comprising at least one selected from the group consisting of at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb, oxides thereof, or carbonates thereof; and
a sum of contents of one or more of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb included in the third subcomponent is 2.0 to 7 mole parts based on 100 mole parts of the base material main component.

### Claim 15 (depends on 9)

The multilayer ceramic electronic component of claim 9, wherein the subcomponent comprises a fourth subcomponent comprising at least one selected from the group consisting of at least one of Ba and Ca, oxides thereof, or carbonates thereof; and
a sum of contents of one or more of Ba and Ca included in the fourth subcomponent is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component.

### Claim 16 (depends on 9)

The multilayer ceramic electronic component of claim 9, wherein the subcomponent comprises a fifth subcomponent comprising at least one selected from the group consisting of an oxide of a Si element, a carbonate of a Si element, and a glass containing a Si element; and
a content of the Si element included in the fifth subcomponent is 0.5 to 4.0 mole parts based on 100 mole parts of the base material main component.

### Claim 17

A dielectric ceramic composition comprising:
a base material main component of barium titanate and a subcomponent,
wherein a microstructure of the dielectric ceramic composition after sintering includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %,
wherein an area ratio of the second grain to an area of a sum of the first and second grains is 70% to 95%,
wherein the base material main component excludes CaZrO3 and comprises a first base material main component represented by (Ba1−xCax)TiO3 (x≤0.035) and a second base material main component represented by (Ba1−yCay)TiO3 (0.035≤y≤0.135), and
wherein a molar ratio of the first base material main component to the second base material main component is (1−z):z, in which 0.7≤z≤0.95.

### Claim 18

A multilayer ceramic electronic component comprising:
a ceramic body including a dielectric layer and an internal electrode; and
an external electrode disposed on an external surface of the ceramic body and electrically connected to the internal electrode,
wherein a microstructure of the dielectric layer includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %,
wherein an area ratio of the second grain to an area of a sum of the first and second grains is 70% to 95%,
wherein the dielectric layer comprises a dielectric ceramic composition comprising a base material main component of barium titanate and a subcomponent,
wherein the base material main component excludes CaZrO3 and includes a first base material main component represented by (Ba1−xCax)TiO3 (x≤0.035) and a second base material main component represented by (Ba1−yCay)TiO3 (0.035≤y≤0.135), and
wherein a molar ratio of the first base material main component to the second base material main component is (1−z):z, in which 0.7≤z≤0.95.

### Claim 19 (depends on 17)

The dielectric ceramic composition of claim 17, wherein the subcomponent comprises at least one of:
a first subcomponent comprising at least one selected from the group consisting of a variable-valence acceptor element including at least one of manganese (Mn), vanadium (V), chromium (Cr), iron (Fe), nickel (Ni), cobalt (Co), copper (Cu), and zinc (Zn), oxides thereof, or carbonates thereof;
a second subcomponent comprising at least one of fixed-valence acceptor elements including Mg, oxides thereof, or carbonates thereof;
a third subcomponent comprising at least one selected from the group consisting of at least one of yttrium (Y), dysprosium (Dy), holmium (Ho), erbium (Er), gadolinium (Gd), cerium (Ce), neodymium (Nd), samarium (Sm), terbium (Tb), thulium (Tm), lanthanum (La) and ytterbium (Yb), oxides thereof, or carbonates thereof;
a fourth subcomponent comprising at least one selected from the group consisting of at least one of barium (Ba) and calcium (Ca), oxides thereof, or carbonates thereof; and
a fifth subcomponent comprising at least one selected from the group consisting of an oxide of a silicon (Si) element, a carbonate of a Si element, and a glass containing a Si element.

### Claim 20 (depends on 19)

The dielectric ceramic composition of claim 19, wherein a sum of contents of variable-valence acceptor elements of one or more of Mn, V, Cr, Fe, Ni, Co, Cu and Zn included in the first subcomponent is 0.1 to 2.0 mole parts based on 100 mole parts of the base material main component,
the content of the fixed-valence acceptor elements including Mg, included in the second subcomponent, is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component,
a sum of contents of one or more of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb included in the third subcomponent is 2.0 to 7 mole parts based on 100 mole parts of the base material main component,
a sum of contents of one or more of Ba and Ca included in the fourth subcomponent is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component, and
a content of the Si element included in the fifth subcomponent is 0.5 to 4.0 mole parts based on 100 mole parts of the base material main component.

### Claim 21 (depends on 17)

The dielectric ceramic composition of claim 17, wherein the subcomponent comprises a first subcomponent comprising at least one selected from the group consisting of variable-valence acceptor elements comprising at least one of Mn, V, Cr, Fe, Ni, Co, Cu and Zn, oxides thereof, or carbonates thereof; and
a sum of contents of variable-valence acceptor elements of one or more of Mn, V, Cr, Fe, Ni, Co, Cu and Zn included in the first subcomponent is 0.1 to 2.0 mole parts based on 100 mole parts of the base material main component.

### Claim 22 (depends on 17)

The dielectric ceramic composition of claim 17, wherein the subcomponent comprises a second subcomponent comprising at least one of fixed-valence acceptor elements comprising Mg, oxides thereof, or carbonates thereof; and
the content of the fixed-valence acceptor elements including Mg, included in the second subcomponent, is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component.

### Claim 23 (depends on 17)

The dielectric ceramic composition of claim 17, wherein the subcomponent comprises a third subcomponent comprising at least one selected from the group consisting of at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb, oxides thereof, or carbonates thereof; and
a sum of contents of one or more of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb included in the third subcomponent is 2.0 to 7 mole parts based on 100 mole parts of the base material main component.

### Claim 24 (depends on 17)

The dielectric ceramic composition of claim 17, wherein the subcomponent comprises a fourth subcomponent comprising at least one selected from the group consisting of at least one of Ba and Ca, oxides thereof, or carbonates thereof; and
a sum of contents of one or more of Ba and Ca included in the fourth subcomponent is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component.

### Claim 25 (depends on 17)

The dielectric ceramic composition of claim 17, wherein the subcomponent comprises a fifth subcomponent comprising at least one selected from the group consisting of an oxide of a Si element, a carbonate of a Si element, and a glass containing a Si element; and
a content of the Si element included in the fifth subcomponent is 0.5 to 4.0 mole parts based on 100 mole parts of the base material main component.

### Claim 26 (depends on 18)

The multilayer ceramic electronic component of claim 18, wherein the subcomponent comprises at least one of:
a first subcomponent comprising at least one selected from the group consisting of a variable-valence acceptor element including at least one of manganese (Mn), vanadium (V), chromium (Cr), iron (Fe), nickel (Ni), cobalt (Co), copper (Cu), and zinc (Zn), oxides thereof, or carbonates thereof;
a second subcomponent comprising at least one of fixed-valence acceptor elements including Mg, oxides thereof, and carbonates thereof;
a third subcomponent comprising at least one selected from the group consisting of at least one of yttrium (Y), dysprosium (Dy), holmium (Ho), erbium (Er), gadolinium (Gd), cerium (Ce), neodymium (Nd), samarium (Sm), terbium (Tb), thulium (Tm), lanthanum (La) and ytterbium (Yb), oxides thereof, or carbonates thereof;
a fourth subcomponent comprising at least one selected from the group consisting of at least one of barium (Ba) and calcium (Ca), oxides thereof, or carbonates thereof; and
a fifth subcomponent comprising at least one selected from the group consisting of an oxide of a silicon (Si) element, a carbonate of a Si element, and a glass containing a Si element.

### Claim 27 (depends on 26)

The multilayer ceramic electronic component of claim 26, wherein a sum of contents of variable-valence acceptor elements of one or more of Mn, V, Cr, Fe, Ni, Co, Cu and Zn included in the first subcomponent is 0.1 to 2.0 mole parts based on 100 mole parts of the base material main component,
the content of the fixed-valence acceptor elements including Mg, included in the second subcomponent, is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component,
a sum of contents of one or more of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb included in the third subcomponent is 2.0 to 7 mole parts based on 100 mole parts of the base material main component,
a sum of contents of one or more of Ba and Ca included in the fourth subcomponent is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component, and
a content of the Si element included in the fifth subcomponent is 0.5 to 4.0 mole parts based on 100 mole parts of the base material main component.

### Claim 28 (depends on 18)

The multilayer ceramic electronic component of claim 18, wherein the subcomponent comprises a first subcomponent comprising at least one selected from the group consisting of variable-valence acceptor elements comprising at least one of Mn, V, Cr, Fe, Ni, Co, Cu and Zn, oxides thereof, or carbonates thereof; and
a sum of contents of variable-valence acceptor elements of one or more of Mn, V, Cr, Fe, Ni, Co, Cu and Zn included in the first subcomponent is 0.1 to 2.0 mole parts based on 100 mole parts of the base material main component.

### Claim 29 (depends on 18)

The multilayer ceramic electronic component of claim 18, wherein the subcomponent comprises a second subcomponent comprising at least one of fixed-valence acceptor elements comprising Mg, oxides thereof, or carbonates thereof; and
the content of the fixed-valence acceptor elements including Mg, included in the second subcomponent, is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component.

### Claim 30 (depends on 18)

The multilayer ceramic electronic component of claim 18, wherein the subcomponent comprises a third subcomponent comprising at least one selected from the group consisting of at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb, oxides thereof, or carbonates thereof; and
a sum of contents of one or more of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La and Yb included in the third subcomponent is 2.0 to 7 mole parts based on 100 mole parts of the base material main component.

### Claim 31 (depends on 18)

The multilayer ceramic electronic component of claim 18, wherein the subcomponent comprises a fourth subcomponent comprising at least one selected from the group consisting of at least one of Ba and Ca, oxides thereof, or carbonates thereof; and
a sum of contents of one or more of Ba and Ca included in the fourth subcomponent is 0.5 to 3.0 mole parts based on 100 mole parts of the base material main component.

### Claim 32 (depends on 18)

The multilayer ceramic electronic component of claim 18, wherein the subcomponent comprises a fifth subcomponent comprising at least one selected from the group consisting of an oxide of a Si element, a carbonate of a Si element, and a glass containing a Si element; and
a content of the Si element included in the fifth subcomponent is 0.5 to 4.0 mole parts based on 100 mole parts of the base material main component.
