JP2016113355A - 誘電体磁器組成物、誘電体材料及びこれを含む積層セラミックキャパシタ - Google Patents
誘電体磁器組成物、誘電体材料及びこれを含む積層セラミックキャパシタ Download PDFInfo
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- JP2016113355A JP2016113355A JP2015093031A JP2015093031A JP2016113355A JP 2016113355 A JP2016113355 A JP 2016113355A JP 2015093031 A JP2015093031 A JP 2015093031A JP 2015093031 A JP2015093031 A JP 2015093031A JP 2016113355 A JP2016113355 A JP 2016113355A
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Abstract
Description
本発明の一実施形態による誘電体磁器組成物は、Ba及びTiを含む主成分を含むことができる。
本発明の一実施形態によれば、上記誘電体磁器組成物は、第1の副成分として、Mn、V、Cr、Fe、Ni、Co、Cu及びZnからなる群から選択される一つ以上の元素、これらの酸化物及びこれらの炭酸塩のうち一つ以上を含むことができる。
本発明の一実施形態によれば、上記誘電体磁器組成物は、第2の副成分として、Mgを含む原子価固定アクセプタ(fixed‐valence acceptor)元素の、酸化物及び炭酸塩のうち一つ以上を含むことができる。
本発明の一実施形態によれば、上記誘電体磁器組成物は、Y、Dy、Ho、Sm、Gd、Er、La、Ce、Nd、Pr及びTbのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第3の副成分を含むことができる。
本発明の一実施形態によれば、上記誘電体磁器組成物は、Ba及びCaのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第4の副成分を含むことができる。
本発明の一実施形態によれば、上記誘電体磁器組成物は、CaZrO3を含む第5の副成分を含むことができる。
本発明の一実施形態によれば、上記誘電体磁器組成物は、Si元素の酸化物、Si元素の炭酸塩及びSi元素を含むガラスからなる群から選択される一つ以上を含む第6の副成分を含むことができる。
第1の主成分及び第2の主成分を含む主成分粉末である(1−z)(Ba1−xCax)TiO3+z(Ba1−yCay)TiO3混合固溶体粉末を、下記のように固相法を用いて製造した。
110 セラミック本体
111 誘電体層
121 第1の内部電極
122 第2の内部電極
131 第1の外部電極
132 第2の外部電極
Claims (23)
- チタン酸バリウム系主成分及び副成分を含み、
焼結後の微細構造において、
Ca含量が2.5mol%未満の結晶粒を第1の結晶粒、Ca含量が2.5〜13.5mol%の結晶粒を第2の結晶粒としたとき、前記第2の結晶粒の断面積比が全断面積100%に対して30%〜80%である、誘電体磁器組成物。 - 前記誘電体磁器組成物の焼結後のXRD分析において、BaTiO3の(110)ピークを1.00に換算したとき、前記BaTiO3の(110)ピークに対する、30.5度付近のパイロクロア(Pyrochlore)相(RE2Ti2O7、ここで、REは、 Y、Dy、Ho、Sm、Gd、Er、La、Ce、Nd、Pr、Tb のうち一つ以上)のピークの比が0.02以下を満たす、請求項1に記載の誘電体磁器組成物。
- 前記主成分は、(Ba1−xCax)TiO3(x≦0.02)で表される第1の主成分、及び(Ba1−yCay)TiO3(0.04≦y≦0.12)で表される第2の主成分を含み、第1の主成分のモル比を1−z、第2の主成分のモル比をzとしたとき、0.3≦z≦0.8である、請求項1または2に記載の誘電体磁器組成物。
- 前記副成分は、
Mn、V、Cr、Fe、Ni、Co、Cu及びZnのうち一つ以上を含む原子価可変アクセプタ元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第1の副成分、
Mgを含む原子価固定アクセプタ元素の、酸化物及び炭酸塩のうち一つ以上を含む第2の副成分、
Y、Dy、Ho、Sm、Gd、Er、La、Ce、Nd、Pr及びTbのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第3の副成分、
Ba及びCaのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第4の副成分、
CaZrO3を含む第5の副成分、及び
Si元素の酸化物、Si元素の炭酸塩及びSi元素を含むガラスからなる群から選択される一つ以上を含む第6の副成分のうち少なくとも一つ以上を含む、請求項1から3のいずれか1項に記載の誘電体磁器組成物。 - 前記副成分は、Mn、V、Cr、Fe、Ni、Co、Cu及びZnのうち一つ以上を含む原子価可変アクセプタ元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第1の副成分を含み、
前記第1の副成分に含まれたMn、V、Cr、Fe、Ni、Co、Cu及びZnのうち一つ以上の原子価可変アクセプタ元素の総含量は前記主成分100モル部に対して0.1〜2.0モル部である、請求項4に記載の誘電体磁器組成物。 - 前記副成分は、Mgを含む原子価固定アクセプタ元素の、酸化物及び炭酸塩のうち一つ以上を含む第2の副成分を含み、
前記第2の副成分に含まれたMgを含む原子価固定アクセプタ元素の含量は主成分100モル部に対して2.0モル部以下である、請求項4または5に記載の誘電体磁器組成物。 - 前記副成分は、Y、Dy、Ho、Sm、Gd、Er、La、Ce、Nd、Pr及びTbのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第3の副成分を含み、
前記第3の副成分に含まれたY、Dy、Ho、Sm、Gd、Er、La、Ce、Nd、Pr及びTbのうち一つ以上の元素の総含量は前記主成分100モル部に対して0.2〜5.0モル部である、請求項4から6のいずれか1項に記載の誘電体磁器組成物。 - 前記副成分は、Ba及びCaのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第4の副成分を含み、
前記第4の副成分に含まれたBa及びCaのうち一つ以上の元素の総含量は前記主成分100モル部に対して0.72〜7.68モル部である、請求項4から7のいずれか1項に記載の誘電体磁器組成物。 - 前記副成分は、CaZrO3を含む第5の副成分を含み、
前記CaZrO3の含量は前記主成分100モル部に対して3モル部以下である、請求項4から8のいずれか1項に記載の誘電体磁器組成物。 - 前記副成分は、Si元素の酸化物、Si元素の炭酸塩及びSi元素を含むガラスからなる群から選択される一つ以上を含む第6の副成分を含み、
前記第6の副成分に含まれたSi元素の含量は前記主成分100モル部に対して0.5〜3.0モル部である、請求項4から9のいずれか1項に記載の誘電体磁器組成物。 - 前記副成分は、
Ba及びCaのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第4の副成分と、
Si元素の酸化物、Si元素の炭酸塩及びSi元素を含むガラスからなる群から選択される一つ以上を含む第6の副成分と、
を含み、
前記第4の副成分に含まれたBa及びCaのうち一つ以上の元素の総含量をx、前記第6の副成分に含まれたSi元素の含量をyとしたとき、x/yが1.44〜2.56である、請求項4から10のいずれか1項に記載の誘電体磁器組成物。 - 請求項1から11のいずれか一項に記載の誘電体磁器組成物が焼結されて形成される、誘電体材料。
- 誘電体層と内部電極が交互に積層されたセラミック本体と、
前記セラミック本体の外部面に形成され、前記内部電極と電気的に連結される外部電極と、
を含み、
前記誘電体層の微細構造において、Ca含量が2.5mol%未満の結晶粒を第1の結晶粒、Ca含量が2.5〜13.5mol%の結晶粒を第2の結晶粒としたとき、前記第2の結晶粒の断面積比が全断面積100%に対して30%〜80%である、積層セラミックキャパシタ。 - 前記誘電体層のXRD分析において、BaTiO3の(110)ピークを1.00に換算したとき、前記BaTiO3の(110)ピークに対する、30.5度付近のパイロクロア(Pyrochlore)相(RE2Ti2O7、ここで、REは、 Y、Dy、Ho、Sm、Gd、Er、La、Ce、Nd、Pr、Tb のうち一つ以上)のピークの比が0.02以下を満たす、請求項13に記載の積層セラミックキャパシタ。
- 前記誘電体層は、チタン酸バリウム系主成分及び副成分を含む誘電体磁器組成物で形成され、
前記主成分は、(Ba1−xCax)TiO3(x≦0.02)で表される第1の主成分、及び(Ba1−yCay)TiO3(0.04≦y≦0.12)で表される第2の主成分を含み、第1の主成分のモル比を1−z、第2の主成分のモル比をzとしたとき、0.3≦z≦0.8である、請求項13または14に記載の積層セラミックキャパシタ。 - 前記誘電体層は、チタン酸バリウム系主成分及び副成分を含む誘電体磁器組成物で形成され、
前記副成分は、
Mn、V、Cr、Fe、Ni、Co、Cu及びZnのうち一つ以上を含む原子価可変アクセプタ元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第1の副成分、
Mgを含む原子価固定アクセプタ元素の、酸化物及び炭酸塩のうち一つ以上を含む第2の副成分、
Y、Dy、Ho、Sm、Gd、Er、La、Ce、Nd、Pr及びTbのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第3の副成分、
Ba及びCaのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第4の副成分、
CaZrO3を含む第5の副成分、及び
Si元素の酸化物、Si元素の炭酸塩及びSi元素を含むガラスからなる群から選択される一つ以上を含む第6の副成分のうち少なくとも一つ以上を含む、請求項13から15のいずれか1項に記載の積層セラミックキャパシタ。 - 前記副成分は、Mn、V、Cr、Fe、Ni、Co、Cu及びZnのうち一つ以上を含む原子価可変アクセプタ元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第1の副成分を含み、
前記第1の副成分に含まれたMn、V、Cr、Fe、Ni、Co、Cu及びZnのうち一つ以上の原子価可変アクセプタ元素の総含量は前記主成分100モル部に対して0.1〜2.0モル部である、請求項16に記載の積層セラミックキャパシタ。 - 前記副成分は、Mgを含む原子価固定アクセプタ元素の、酸化物及び炭酸塩のうち一つ以上を含む第2の副成分を含み、
前記第2の副成分に含まれたMgを含む原子価固定アクセプタ元素の含量は主成分100モル部に対して2.0モル部以下である、請求項16または17に記載の積層セラミックキャパシタ。 - 前記副成分は、Y、Dy、Ho、Sm、Gd、Er、La、Ce、Nd、Pr及びTbのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第3の副成分を含み、
前記第3の副成分に含まれたY、Dy、Ho、Sm、Gd、Er、La、Ce、Nd、Pr及びTbのうち一つ以上の元素の総含量は前記主成分100モル部に対して0.2〜5.0モル部である、請求項16から18のいずれか1項に記載の積層セラミックキャパシタ。 - 前記副成分は、Ba及びCaのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第4の副成分を含み、
前記第4の副成分に含まれたBa及びCaのうち一つ以上の元素の総含量は前記主成分100モル部に対して0.72〜7.68モル部である、請求項16から19のいずれか1項に記載の積層セラミックキャパシタ。 - 前記副成分は、CaZrO3を含む第5の副成分を含み、
前記CaZrO3の含量は前記主成分100モル部に対して3モル部以下である、請求項16から20のいずれか1項に記載の積層セラミックキャパシタ。 - 前記副成分は、Si元素の酸化物、Si元素の炭酸塩及びSi元素を含むガラスからなる群から選択される一つ以上を含む第6の副成分を含み、
前記第6の副成分に含まれたSi元素の含量は前記主成分100モル部に対して0.5〜3.0モル部である、請求項16から21のいずれか1項に記載の積層セラミックキャパシタ。 - 前記副成分は、
Ba及びCaのうち一つ以上の元素の、酸化物及び炭酸塩からなる群から選択される一つ以上を含む第4の副成分と、
Si元素の酸化物、Si元素の炭酸塩及びSi元素を含むガラスからなる群から選択される一つ以上を含む第6の副成分と、
を含み、
前記第4の副成分に含まれたBa及びCaのうち一つ以上の元素の総含量をx、前記第6の副成分に含まれたSi元素の含量をyとしたとき、x/yが1.44〜2.56である、請求項16から22のいずれか1項に記載の積層セラミックキャパシタ。
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KR20240080885A (ko) * | 2022-11-30 | 2024-06-07 | 주식회사 아모텍 | 고온 안정성을 갖는 유전체 조성물 및 이를 포함하는 적층 세라믹 커패시터 |
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JP4925958B2 (ja) * | 2007-07-27 | 2012-05-09 | 京セラ株式会社 | 積層セラミックコンデンサ |
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US10790436B2 (en) * | 2018-06-20 | 2020-09-29 | Canon Kabushiki Kaisha | Oriented piezoelectric film and method of manufacturing same, and liquid ejection head |
US12014880B2 (en) | 2019-07-10 | 2024-06-18 | Samsung Electro-Mechanics Co., Ltd. | Multilayered capacitor and board having the same mounted thereon |
Also Published As
Publication number | Publication date |
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US20160172107A1 (en) | 2016-06-16 |
US9583266B2 (en) | 2017-02-28 |
KR101883027B1 (ko) | 2018-07-27 |
KR20160073243A (ko) | 2016-06-24 |
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