JPS62202854A - Dielectric ceramic composition for high frequency - Google Patents
Dielectric ceramic composition for high frequencyInfo
- Publication number
- JPS62202854A JPS62202854A JP61059097A JP5909786A JPS62202854A JP S62202854 A JPS62202854 A JP S62202854A JP 61059097 A JP61059097 A JP 61059097A JP 5909786 A JP5909786 A JP 5909786A JP S62202854 A JPS62202854 A JP S62202854A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric ceramic
- ceramic composition
- high frequency
- magnesium
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000203 mixture Substances 0.000 title claims description 19
- 239000000919 ceramic Substances 0.000 title claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 239000007858 starting material Substances 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 description 10
- 238000001354 calcination Methods 0.000 description 9
- 238000005245 sintering Methods 0.000 description 9
- 239000011701 zinc Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 6
- 150000002681 magnesium compounds Chemical class 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- -1 aluminum compound Chemical class 0.000 description 4
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 239000010955 niobium Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 159000000009 barium salts Chemical class 0.000 description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 description 3
- 159000000003 magnesium salts Chemical class 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 150000002821 niobium Chemical class 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- YHBDIEWMOMLKOO-UHFFFAOYSA-I pentachloroniobium Chemical compound Cl[Nb](Cl)(Cl)(Cl)Cl YHBDIEWMOMLKOO-UHFFFAOYSA-I 0.000 description 3
- 150000003481 tantalum Chemical class 0.000 description 3
- OEIMLTQPLAGXMX-UHFFFAOYSA-I tantalum(v) chloride Chemical compound Cl[Ta](Cl)(Cl)(Cl)Cl OEIMLTQPLAGXMX-UHFFFAOYSA-I 0.000 description 3
- 150000003751 zinc Chemical class 0.000 description 3
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical compound [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 description 2
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- PPQREHKVAOVYBT-UHFFFAOYSA-H dialuminum;tricarbonate Chemical compound [Al+3].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PPQREHKVAOVYBT-UHFFFAOYSA-H 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- UEGPKNKPLBYCNK-UHFFFAOYSA-L magnesium acetate Chemical compound [Mg+2].CC([O-])=O.CC([O-])=O UEGPKNKPLBYCNK-UHFFFAOYSA-L 0.000 description 2
- 239000011654 magnesium acetate Substances 0.000 description 2
- 235000011285 magnesium acetate Nutrition 0.000 description 2
- 229940069446 magnesium acetate Drugs 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 1
- HDYRYUINDGQKMC-UHFFFAOYSA-M acetyloxyaluminum;dihydrate Chemical compound O.O.CC(=O)O[Al] HDYRYUINDGQKMC-UHFFFAOYSA-M 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- JPUHCPXFQIXLMW-UHFFFAOYSA-N aluminium triethoxide Chemical compound CCO[Al](OCC)OCC JPUHCPXFQIXLMW-UHFFFAOYSA-N 0.000 description 1
- 229940009827 aluminum acetate Drugs 0.000 description 1
- 229940118662 aluminum carbonate Drugs 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は高周波用誘電体磁器組成物に関し、詳しくはペ
ロブスカイト構造の酸化物に酸化マグネシウムおよび酸
化アルミニウムを特定琵配合したことにより、高周波帯
域においても無負荷Ｑ値が大きく、さらに共振周波数の
温度安定度（τｆ）が良好な高周波用誘電体磁器組成物
に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a dielectric ceramic composition for high frequencies, and more specifically, by blending a specific amount of magnesium oxide and aluminum oxide into an oxide having a perovskite structure, it can be used in high frequency bands. The present invention also relates to a high frequency dielectric ceramic composition which has a large no-load Q value and also has good temperature stability (τf) of the resonance frequency.
［従来の技術］
誘電体磁器組成物は、マイクロ波フィルタ、磁器コンデ
ンサ、サーミスタ、圧電体等の材料として用いられ、種
々の方法により製造されている。[Prior Art] Dielectric ceramic compositions are used as materials for microwave filters, ceramic capacitors, thermistors, piezoelectric bodies, etc., and are manufactured by various methods.
従来より、誘電体磁器組成物として、ＢａＯ１７１１０
、ＭＱ ０１Ｔａ２０ｓおよびＮｂ２Ｏ５を基本組成と
したものが知られており、例えば特開昭５４−７７００
０号、特開昭５４−８０６００号、特開昭５５−１７９
８５号、特開昭５５−３２７２３号、特開昭６０−６８
５０３号等に開示されている。Conventionally, BaO17110 has been used as a dielectric ceramic composition.
, MQ 01Ta20s and Nb2O5 as the basic composition are known, for example, JP-A-54-7700
No. 0, JP-A-54-80600, JP-A-55-179
No. 85, JP-A-55-32723, JP-A-60-68
No. 503, etc.
［°発明が解決しようとする問題点］
しかしながら、上記公報において誘電体磁器組成物を製
造するには、いずれも市販の１３ａ ＣＯ３、Ｚｎ Ｏ
ｌＭＱ Ｏ，Ｔａ２０ｓおよびＮｂ２ｏ５の粉体を原料
とし、これをボールミル等で長時間の湿式混合を行ない
、次いで高温で長時間の仮焼を行なっている。さらに同
様な湿式混合、仮焼を数回繰返してから、焼結すること
により、はじめて緻密な焼結体を得ている。例えば、最
も高い電気特性が報告されている特開昭６０−６８５０
３号においては、ボールミル法を用いて湿式混合してい
るが、混合粉体を全部ペロブスカイト型構造とするため
には長時間の湿式混合を行ない、さらに１１００〜１４
００℃という高温で３〜１２時間という長時間の仮焼を
２．３度繰返す必要がある。またこの方法では焼結も高
温かつ長時間行なうことが必要で、例えば１５５０〜１
６５０℃で１〜１０時間焼結することが必要である。[°Problems to be Solved by the Invention] However, in order to produce the dielectric ceramic composition in the above publication, commercially available 13a CO3, ZnO
Powders of 1MQ O, Ta20s, and Nb2o5 are used as raw materials, which are wet mixed for a long time in a ball mill or the like, and then calcined at a high temperature for a long time. Furthermore, by repeating the same wet mixing and calcination several times and then sintering, a dense sintered body is obtained for the first time. For example, JP-A-60-6850, which has been reported to have the highest electrical characteristics.
In No. 3, wet mixing is performed using a ball mill method, but in order to make all the mixed powder into a perovskite structure, wet mixing is performed for a long time, and further 1100 to 14
It is necessary to repeat calcination 2.3 times at a high temperature of 00°C for a long time of 3 to 12 hours. In addition, this method requires sintering to be carried out at high temperatures and for a long time, e.g.
It is necessary to sinter at 650° C. for 1 to 10 hours.
このような従来技術においては、湿式混合操作が長時間
かつ数度におよぶため操作中において不純物が混入する
機会が多くなる。また湿式混合操作および仮焼工程が多
いため操作が繁雑となる。In such conventional techniques, since the wet mixing operation takes a long time and is repeated several times, there are many opportunities for impurities to be mixed in during the operation. In addition, the operation becomes complicated due to the large number of wet mixing operations and calcining steps.
ざらに仮焼および焼結を高温かつ長時間で行なうために
経済性に欠けるという問題がある。Another problem is that it is not economical because calcination and sintering are carried out at high temperatures and for a long time.
このように従来技術においては、安価かつ容易に十分満
足できる性能を有するｙ、電体磁器組成物を得ることは
できなかった。As described above, in the prior art, it has not been possible to easily obtain an electric ceramic composition having sufficiently satisfactory performance at a low cost.
本発明は、上記従来技術の問題点に鑑みてなされたもの
で、高周波帯域でも無負荷Ｑ値が大きく、さらに共振周
波数の温度安定度（τｆ）が良好な高周波用誘電体磁器
組成物を安価かつ容易に提供することを目的とする。The present invention has been made in view of the above-mentioned problems of the prior art, and provides a dielectric ceramic composition for high frequency use that has a large no-load Q value even in a high frequency band and also has good temperature stability (τf) of the resonant frequency. and to provide it easily.
［問題点を解決するための手段および作用］本発明者ら
は、上記目的を達成するために鋭意検討した結果、ペロ
ブスカイト構造の酸化物に酸化マグネシウムおよび酸化
アルミニウムを特定量配合することにより上記目的を達
成し得る高周波用誘電体磁器組成物が得られることを見
出し本発明に到達した。[Means and effects for solving the problem] As a result of intensive studies to achieve the above object, the inventors of the present invention have achieved the above object by blending specific amounts of magnesium oxide and aluminum oxide into an oxide having a perovskite structure. The present invention was achieved by discovering that a high frequency dielectric ceramic composition capable of achieving the following can be obtained.
すなわち本発明は、
一般式Ｂａ ［（Ｚｎ ｌ−ＸＭＩＪＸ） Ｉ ／３
（Ｔａ ＋−ｙＮｂｙ） ２ ／３ ］ ０３ （式
中、ＸおよびｙはＯ≦Ｘ≦ １．０≦ｙ≦１の範囲にあ
る）で表わされるペロブスカイト構造の酸化物に、該酸
化物に対してＭｑＯを０．０１〜１．００重量％および
ＡＪ ２０３ ｔｉ： ０．０１〜１．００ 重ｆ１％
配合すセタｃ：とを特徴とする。That is, the present invention has the general formula Ba [(Zn l-XMIJX) I /3
(Ta+-yNby)2/3]03 (wherein, X and y are in the range of O≦X≦1.0≦y≦1), MqO: 0.01-1.00% by weight and AJ 203 ti: 0.01-1.00% by weight
It is characterized by the following:
本発明の高周波用誘電体磁器組成物は、以下のようにし
て製造される。The high frequency dielectric ceramic composition of the present invention is manufactured as follows.
本発明の高周波用誘電体磁器組成物の出発原料は、好ま
しくは沈澱法により調製される。すなわち、バリウム塩
、亜鉛塩、マグネシウム塩、ニオブ塩およびタンタル塩
を含有する溶液とアルカリ水溶液を混合して、Ｂａ Ｃ
Ｏ３、
Ｚｎ （ＣＯ３）ｌ −Ｘ （ＯＨ）２％、ＭＱ
（ＣＯ３）Ｉ −Ｘ （ＯＨ）２Ｘ、 Ｎｂ （ＯＨ
）ｓおよびＴａ （ＯＨ）３からなる混合物を沈澱せ
しめて出発原料を得る。The starting material for the high frequency dielectric ceramic composition of the present invention is preferably prepared by a precipitation method. That is, a solution containing barium salt, zinc salt, magnesium salt, niobium salt, and tantalum salt is mixed with an alkaline aqueous solution to form BaC.
O3, Zn (CO3)l -X (OH)2%, MQ
(CO3)I -X (OH)2X, Nb (OH
)s and Ta (OH)3 is precipitated to obtain the starting material.
本発明においては、バリウム塩としては酢酸バリウム、
硝酸バリウム、塩化バリウム等が、亜鉛塩としては硝酸
亜鉛、塩化亜鉛、酢酸亜鉛等が、マグネシウム塩として
は硝酸マグネシウム、塩化マグネシウム、酢酸マグネシ
ウム等が、ニオブ塩としては五塩化ニオブ等が、タンタ
ル塩としては五塩化タンタル等が用いられる。これらの
塩は、水、アルコール等の溶媒に溶かして溶液とし、ア
ルカリ水溶液と混合する。In the present invention, the barium salt includes barium acetate,
Barium nitrate, barium chloride, etc., zinc salts include zinc nitrate, zinc chloride, zinc acetate, etc., magnesium salts include magnesium nitrate, magnesium chloride, magnesium acetate, etc., niobium salts include niobium pentachloride, tantalum salts, etc. As such, tantalum pentachloride or the like is used. These salts are dissolved in a solvent such as water or alcohol to form a solution, and mixed with an aqueous alkaline solution.
なお、３ａ ［（Ｚｎ １−ＸｆＶＨｌｙ） ＋ ／
３（Ｔａ Ｉ−ｙＮ ｂｙ＞ ２ ／３ ］ ０：ｌで
表わされるペロブスカイト構造の酸化物を得るためには
、上記バリウム塩、亜鉛塩、マグネシウム塩、タンタル
塩およびニオブ塩を含有する溶液中のＢａ ： （Ｚｎ
−Ｍｇ）： （Ｔａ −Ｎｂ ＞のモル比が３：１：２
となるように調整する必要がある。本発明に用いられる
アルカリ水溶液としては、炭酸ナトリウム、重炭酸ナト
リウム、炭酸アンモニウム、重炭酸アンモニウム等の炭
酸根を含むアルカリの水溶液が例示される。In addition, 3a [(Zn 1-XfVHly) + /
In order to obtain an oxide with a perovskite structure represented by 3(Ta I-yN by > 2 /3 ] 0:l, a solution containing the barium salt, zinc salt, magnesium salt, tantalum salt and niobium salt is prepared. Ba: (Zn
-Mg): (Ta -Nb > molar ratio is 3:1:2
It is necessary to adjust so that Examples of the aqueous alkali solution used in the present invention include aqueous alkali solutions containing carbonate radicals such as sodium carbonate, sodium bicarbonate, ammonium carbonate, and ammonium bicarbonate.
なお本発明に用いられる出発原料は、沈澱法によらなく
ても従来のように湿式混合法によっても得られるが、工
程の簡略さ、低温短時間で仮焼、焼結が行なえるという
経済性を考慮した場合、沈澱法が有利である。Note that the starting materials used in the present invention can be obtained not by the precipitation method but also by the conventional wet mixing method, but it is economical because the process is simple and calcination and sintering can be performed at low temperatures and in a short time. When considering this, the precipitation method is advantageous.
本発明においては、このようにして得られた沈澱物を、
通常の方法によって洗浄、乾燥、仮焼するが、本発明に
よれば仮焼は、比較的低温かつ短時間で十分であり、例
えば９５０〜１２００℃で１〜３時間で十分である。In the present invention, the precipitate thus obtained is
Washing, drying, and calcining are carried out by conventional methods, but according to the present invention, calcination at a relatively low temperature and for a short time is sufficient, for example, 1 to 3 hours at 950 to 1200°C is sufficient.
本発明においては、このようにして得られた仮焼粉体に
アルミニウム化合物およびマグネシウム化合物を添加し
た後、焼結して、
Ｂａ ［（Ｚｎ １−ｘＭｇｘ） ｌ ／３（Ｔａ
＋−ｙＮｂｙ） ２ ／３ ］ ０３ ＋ａ Ｍｃｌ
Ｏ十ｂ Ａｌ１０３で表わされる組成の高周波用誘電体
磁器組成物を得る。本発明においては、ＭｇＯおよびＡ
ｌ２Ｏ２は、それぞれ
３ａ ［（Ｚｎ Ｉ−ｘＭｇｘ） ＋ ／３（Ｔａ ＋
−ｙＮｂｙ） ２ ／３ ］ ０３に対して、０．０１
〜１．００垂量％配合させることが必要である。Ｍｇｏ
の配合のが、０．０１重量％未満の場合は、無負荷Ｑ値
が大きくならず、また１、００重口％を越えると無負荷
Ｑ値が低下するので好ましくない、Ａノ２０３の配合口
が、０．０１重量％未満の場合はペロブスカイト構造の
酸化物の焼結が不十分となり、電気的特性が十分に向上
せず、また１、００ ｆｆｌｆｆｉ％を越えると電気的
特性が低下するので好ましくない。In the present invention, an aluminum compound and a magnesium compound are added to the calcined powder thus obtained, and then sintered to form Ba[(Zn 1-xMgx) l /3(Ta
+-yNby) 2 /3 ] 03 +a Mcl
A high frequency dielectric ceramic composition having a composition represented by O1bAl103 is obtained. In the present invention, MgO and A
12O2 is 3a [(Zn I-xMgx) + /3(Ta +
−yNby) 2 /3 ] 0.01 for 03
It is necessary to incorporate ~1.00% by weight. Mgo
If the blending amount is less than 0.01% by weight, the unloaded Q value will not increase, and if it exceeds 1,00% by weight, the unloaded Q value will decrease, which is undesirable. If the content is less than 0.01% by weight, the sintering of the perovskite structure oxide will be insufficient, and the electrical properties will not be improved sufficiently, and if it exceeds 1,00% by weight, the electrical properties will deteriorate. So I don't like it.
本発明において用いられるアルミニウム化合物としては
、例えば酢酸アルミニウム、トリエトキシアルミニウム
等のような有機アルミニウム化合物や酸化アルミニウム
、硫酸アルミニウム、炭酸アルミニウム、水酸化アルミ
ニウム、硝酸アルミニウム、塩化アルミニウム等のよう
な無機アルミニウム化合物を挙げることができ、焼結に
よって酸化物になるようなものであればよい。本発明に
おいて用いられるマグネシウム化合物としては、例えば
酢酸マグネシウム、トリエトキシマグネシウム等のよう
な有機マグネシウム化合物や酸化マグネシウム、硫酸マ
グネシウム、炭酸マグネシウム、水酸化マグネシウム、
硝酸マグネシウム、塩化マグネシウム等のような無機マ
グネシウム化合物等を挙げることができ、焼結によって
酸化物になるようなものであればよい。Examples of the aluminum compound used in the present invention include organic aluminum compounds such as aluminum acetate and triethoxyaluminum, and inorganic aluminum compounds such as aluminum oxide, aluminum sulfate, aluminum carbonate, aluminum hydroxide, aluminum nitrate, and aluminum chloride. Any material that can be turned into an oxide by sintering may be used. Examples of the magnesium compound used in the present invention include organic magnesium compounds such as magnesium acetate and triethoxymagnesium, magnesium oxide, magnesium sulfate, magnesium carbonate, magnesium hydroxide,
Examples include inorganic magnesium compounds such as magnesium nitrate and magnesium chloride, as long as they can be turned into oxides by sintering.
なお本発明においては、焼結も低温かつ短時間で可能で
、例えば１３５０〜１６００℃で５〜１５時間行なえば
よい。In the present invention, sintering can also be performed at a low temperature and in a short time, for example, at 1350 to 1600°C for 5 to 15 hours.
［実施例の説明］
以下、実施例および比較例に基づいて本発明を具体的に
説明する。[Description of Examples] The present invention will be specifically described below based on Examples and Comparative Examples.
；施例１〜２３および 較例１〜７
（出発原料の調製工程）
酢酸バリウム、硝酸亜鉛、塩化マグネシウム、五塩化ニ
オブおよび五塩化タンタルをＢａ：（Ｚｎ −Ｍ（＋
） ： （Ｔａ −Ｎｂ ）＝３：１ ：２のモル比と
なるように秤量し、五塩化ニオブと五塩化タンタルはエ
チルアルコール溶液とし、その他は水溶液とした。また
、炭酸ナトリウムも水溶液とした。; Examples 1 to 23 and Comparative Examples 1 to 7 (Preparation process of starting materials) Barium acetate, zinc nitrate, magnesium chloride, niobium pentachloride and tantalum pentachloride were mixed with Ba: (Zn -M(+
): (Ta-Nb) = 3:1:2 molar ratio, niobium pentachloride and tantalum pentachloride were made into ethyl alcohol solutions, and the others were made into aqueous solutions. In addition, sodium carbonate was also made into an aqueous solution.
この３種の溶液を６０℃で撹拌を伴いながら混合し、３
ａ ＣＯ：ｌ 、Ｚｎ （ＣＯ３）Ｉ−Ｘ（ＯＨ）２
Ｘ、Ｍ（］ （ＣＯ３）Ｉ−Ｘ（ＯＨ）２Ｘ、Ｎｂ
（ＯＨ）ｓおよびＴａ （ＯＨ）’５らなる混合物
を沈澱させた。These three solutions were mixed at 60°C with stirring, and
a CO:l, Zn (CO3)I-X(OH)2
X, M(] (CO3)I-X(OH)2X, Nb
A mixture consisting of (OH)s and Ta(OH)'5 was precipitated.
上記３種の溶液を混合した懸濁液は同一温度で攪拌させ
ながら３０分間の熟成を行ない沈澱反応を完了させた。The suspension obtained by mixing the above three types of solutions was aged for 30 minutes while stirring at the same temperature to complete the precipitation reaction.
必要に応じ数回の濾過、洗浄を繰返した後、熱風乾燥し
、目的とする出発原料を得た。After repeating filtration and washing several times as necessary, the mixture was dried with hot air to obtain the desired starting material.
（粉砕、仮焼工程）
乾燥して得られた出発原料を微粉化し、これを空気雰囲
気中で３時間仮焼を行なった。(Crushing and Calcining Step) The starting material obtained by drying was pulverized and calcined for 3 hours in an air atmosphere.
（ＡＪ化合物およびＭＯ化合物の添加工程）仮焼によっ
て得られた仮焼粉体にアルミニウム化合物およびマグネ
シウム化合物を仮焼粉体に対しＡｌ１０３ 、ＭＱ Ｏ
としてＮ量比で、それぞれ０〜１．５％添加した。(Step of adding AJ compound and MO compound) Aluminum compound and magnesium compound are added to the calcined powder obtained by calcining.Al103, MQO
The amount of N was added in an amount of 0 to 1.5%, respectively.
（成型および焼結工程）
アルミニウム化合物およびマグネシウム化合物を加えた
仮焼粉体を１０００ ｋ＋Ｊ ／ ｃｒＡで加圧するこ
とにより２０ＩＩＩＩｌφの円板状にし、空気雰囲気中
、８〜１５時間焼結を行なった。(Molding and sintering process) The calcined powder to which an aluminum compound and a magnesium compound were added was pressurized at 1000 k+J/crA to form a disk shape of 20IIIlφ, and sintered in an air atmosphere for 8 to 15 hours.
得られた焼結体を５．５ｍｍφ、２．２ｍｍ厚あるいは
６、Ｏｎｍφ、２．４ｎ＋ｍ厚に切り抜き、性能評価試
験に供した。性能評価試験結果として、無負荷Ｑ値、共
振周波数１１Ｇ ｌ−Ｉ Ｚにおける比誘電率くεｒ）
および共振周波数の温度安定度（τｆ）（−２０℃〜＋
５０℃）を次表に示す。The obtained sintered body was cut out into pieces of 5.5 mmφ and 2.2 mm thick, or 6 mmφ and 2.4 nm+m thick, and subjected to a performance evaluation test. As the performance evaluation test results, the no-load Q value, the relative permittivity at the resonance frequency 11Gl-IZ (εr)
and temperature stability of resonance frequency (τf) (-20℃~+
50°C) are shown in the table below.
なお表中、ａおよびｂはそれぞれ
３ａ ［（Ｚｎ Ｉ−ＸＭ（ＩＸ） Ｉ ／３（Ｔａ
＋−，ｙＮｂｙ） ２ ／３ ］ ０３に対して重り
比で示したＡＪ２０３配合ａおよびＭｏＯ配合量であり
、Ｘおよびｙはそれぞれ上式中の変数×およびｙを示す
。In the table, a and b are respectively 3a [(Zn I-XM(IX) I/3(Ta
+−,yNby) 2 /3 ] AJ203 formulation a and MoO compounding amount shown in weight ratio to 03, and X and y represent variables x and y in the above formula, respectively.
表
表（続き）
［発明の効果］
以上説明したように、本発明の高周波用誘電体磁器組成
物は、高周波帯域でも無負荷Ｑ値が大きく、さらに共振
周波数の温度安定度（τｆ）が優れている。また、沈澱
法によって出発原料を得ることにより、安価な高周波用
誘電体を容易に得ることができる。Table (Continued) [Effects of the Invention] As explained above, the high frequency dielectric ceramic composition of the present invention has a large no-load Q value even in the high frequency band, and also has excellent temperature stability (τf) at the resonance frequency. ing. In addition, by obtaining the starting material by the precipitation method, an inexpensive high-frequency dielectric material can be easily obtained.
Claims (1)
／＿３（Ｔａ＿１＿−＿ｙＮｂ＿ｙ）＿２＿／＿３］Ｏ
＿３（式中、ｘおよびｙは０≦ｘ≦１、０≦ｙ≦１の範
囲にある）で表わされるペロブスカイト構造の酸化物に
、該酸化物に対してＭｇＯを０．０１〜１．００重量％
およびＡｌ＿２Ｏ＿３を０．０１〜１．００重量％配合
させたことを特徴とする高周波用誘電体磁器組成物。 ２、前記ペロブスカイト構造の酸化物の出発原料として
沈澱法により得たものを使う、前記特許請求の範囲第１
項記載の高周波用誘電体磁器組成物。[Claims] 1. General formula Ba [(Zn_1_−_xMg_x)_1_
/_3(Ta_1_-_yNb_y)_2_/_3]O
_3 (in the formula, x and y are in the range of 0≦x≦1, 0≦y≦1), MgO is added in an amount of 0.01 to 1.00% relative to the oxide. weight%
and Al_2O_3 in an amount of 0.01 to 1.00% by weight. 2. Claim 1, wherein a starting material for the perovskite structure oxide is obtained by a precipitation method.
The high frequency dielectric ceramic composition described in 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60-242944 | 1985-10-31 | ||
| JP24294485 | 1985-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62202854A true JPS62202854A (en) | 1987-09-07 |
Family
ID=17096544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61059097A Pending JPS62202854A (en) | 1985-10-31 | 1986-03-19 | Dielectric ceramic composition for high frequency |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62202854A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0275151A2 (en) * | 1987-01-08 | 1988-07-20 | Matsushita Electric Industrial Co., Ltd. | Method for producing crystalline complex perovskite compounds |
| JPH04133210A (en) * | 1990-09-25 | 1992-05-07 | Matsushita Electric Ind Co Ltd | High frequency dielectric porcelain |
| JP2003201177A (en) * | 2001-07-16 | 2003-07-15 | Ngk Spark Plug Co Ltd | Dielectric ceramic |
-
1986
- 1986-03-19 JP JP61059097A patent/JPS62202854A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0275151A2 (en) * | 1987-01-08 | 1988-07-20 | Matsushita Electric Industrial Co., Ltd. | Method for producing crystalline complex perovskite compounds |
| JPH04133210A (en) * | 1990-09-25 | 1992-05-07 | Matsushita Electric Ind Co Ltd | High frequency dielectric porcelain |
| JP2003201177A (en) * | 2001-07-16 | 2003-07-15 | Ngk Spark Plug Co Ltd | Dielectric ceramic |
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