JP2018531858A - 誘電体組成物、誘電体素子、電子部品および積層電子部品 - Google Patents
誘電体組成物、誘電体素子、電子部品および積層電子部品 Download PDFInfo
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- JP2018531858A JP2018531858A JP2018501917A JP2018501917A JP2018531858A JP 2018531858 A JP2018531858 A JP 2018531858A JP 2018501917 A JP2018501917 A JP 2018501917A JP 2018501917 A JP2018501917 A JP 2018501917A JP 2018531858 A JP2018531858 A JP 2018531858A
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- 239000000203 mixture Substances 0.000 title claims abstract description 99
- 239000002245 particle Substances 0.000 claims abstract description 94
- 239000011258 core-shell material Substances 0.000 claims abstract description 30
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- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 9
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 7
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 6
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract description 6
- 229910052693 Europium Inorganic materials 0.000 claims abstract description 6
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 6
- 229910052689 Holmium Inorganic materials 0.000 claims abstract description 6
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 6
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 6
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 6
- 229910052771 Terbium Inorganic materials 0.000 claims abstract description 6
- 229910052769 Ytterbium Inorganic materials 0.000 claims abstract description 6
- 229910052788 barium Inorganic materials 0.000 claims abstract description 6
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 6
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 6
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 6
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 6
- 229910002367 SrTiO Inorganic materials 0.000 claims description 18
- 229910002370 SrTiO3 Inorganic materials 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 24
- 239000000843 powder Substances 0.000 description 18
- 239000003985 ceramic capacitor Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 13
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- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 3
- 229910002113 barium titanate Inorganic materials 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
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- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 2
- CMGJQFHWVMDJKK-UHFFFAOYSA-N lanthanum;trihydrate Chemical compound O.O.O.[La] CMGJQFHWVMDJKK-UHFFFAOYSA-N 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229910000018 strontium carbonate Inorganic materials 0.000 description 2
- 239000012856 weighed raw material Substances 0.000 description 2
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- FSAJRXGMUISOIW-UHFFFAOYSA-N bismuth sodium Chemical compound [Na].[Bi] FSAJRXGMUISOIW-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
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- 238000001739 density measurement Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 description 1
- CKHJYUSOUQDYEN-UHFFFAOYSA-N gallium(3+) Chemical compound [Ga+3] CKHJYUSOUQDYEN-UHFFFAOYSA-N 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
Description
少なくともBi、Na、SrおよびTiを含有するペロブスカイト型の結晶構造を含む誘電体組成物であって、
La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Yb、Ba、Ca、MgおよびZnの中から選ばれる少なくとも1種以上を含み、
前記誘電体組成物が、SrTiO3を含むコア部を少なくとも一つ持つコアシェル構造を有する特定粒子を含み、
前記誘電体組成物に含まれる全粒子数に対する前記特定粒子数の比率をαとした場合に、0.20≦α≦0.70であることを特徴とする。
酸化ビスマス(Bi2O3)、炭酸ナトリウム(Na2CO3)、炭酸ストロンチウム(SrCO3)、炭酸バリウム(BaCO3)、炭酸カルシウム(CaCO3)、炭酸マグネシウム(MgCO3)、酸化亜鉛(ZnO)、水酸化ランタン(La(OH)3)、酸化ネオジウム(Nd2O3)、酸化サマリウム(Sm2O3)、酸化ガドリニウム(Gd2O3)、酸化チタン(TiO2)の原料粉末を準備した。ここで、各原料粉末の平均粒径を0.1μm〜1.0μmの範囲で適宜調整し、前記誘電体組成物試料のαが表1に示す値となるようにした。
2,3…電極
5…積層体
6A,6B…内部電極層
7…誘電体層
11A,11B…端子電極
8…コア
9…シェル
10…粒界
20…単一相粒子
30…コアシェル粒子
100…セラミックコンデンサ
200…積層セラミックコンデンサ
300…誘電体組成物
Claims (6)
- 少なくともBi、Na、SrおよびTiを含有するペロブスカイト型の結晶構造を含む誘電体組成物であって、
La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Yb、Ba、Ca、MgおよびZnの中から選ばれる少なくとも1種以上を含み、
前記誘電体組成物が、SrTiO3を含むコア部を少なくとも一つ持つコアシェル構造を有する特定粒子を含み、
前記誘電体組成物に含まれる全粒子数に対する前記特定粒子数の比率をαとした場合に、0.20≦α≦0.70であることを特徴とする誘電体組成物。 - 前記誘電体組成物におけるTiの含有量を100モル部として、前記La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Yb、Ba、Ca、MgおよびZnの中から選ばれる少なくとも1種以上の含有量が、0.2モル部以上、14.3モル部以下である請求項1に記載の誘電体組成物。
- 前記誘電体組成物におけるNaに対するSrのモル比率をβとした場合に、0.92≦β≦3.00である請求項1または2に記載の誘電体組成物。
- 請求項1〜3のいずれかに記載の誘電体組成物を備える誘電体素子。
- 請求項1〜3のいずれかに記載の誘電体組成物からなる誘電体層を備える電子部品。
- 請求項1〜3のいずれかに記載の誘電体組成物からなる誘電体層と内部電極層とを交互に積層されてなる積層部分を有する積層電子部品。
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