JPH0456005A - Porcelain dielectric substance for temperature compensation - Google Patents
Porcelain dielectric substance for temperature compensationInfo
- Publication number
- JPH0456005A JPH0456005A JP2162645A JP16264590A JPH0456005A JP H0456005 A JPH0456005 A JP H0456005A JP 2162645 A JP2162645 A JP 2162645A JP 16264590 A JP16264590 A JP 16264590A JP H0456005 A JPH0456005 A JP H0456005A
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- mol
- value
- titanate
- 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
- 229910052573 porcelain Inorganic materials 0.000 title abstract description 11
- 239000000126 substance Substances 0.000 title abstract 4
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 31
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 17
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 14
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 claims description 10
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 claims description 9
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 10
- 239000000843 powder Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101100481408 Danio rerio tie2 gene Proteins 0.000 description 1
- -1 LaTiOs Chemical compound 0.000 description 1
- 101100481410 Mus musculus Tek gene Proteins 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Capacitors (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は温度補償用磁器話電体に関し、特に、高い誘電
率と高いＱ値を確保しながら、その温度係数を低減させ
るための組成上の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a temperature-compensated porcelain telephone body, and in particular, to a composition that reduces the temperature coefficient while ensuring a high dielectric constant and a high Q value. Regarding improvements.
［従来の技術］
従来の温度補償用磁器話電体としては、その組成にＪＯ
４ｊ０２． ［；ａ、Ｏ，−ＴＩＯ，、５ｒＴｉＯｓ
、 ＬａＴｉＯｓ等のチタン酸塩を用いたものがあり、
また、温度係数低減と誘電率向上のためにこれらチタン
酸塩を種々組み合わせたもの、例えばＭｇ０４ｉ０ｚ
−ＣａＴｊＯｓ系の話電体や、特公昭３７−１１３３３
号公報開示のようなＭｇＯ・Ｔ ｉＯ，−ＣａＴｉ０．
− Ｌａ、０．４ｉ０２系の話電体、さらには５ｒＴｉ
Ｏｓ −ＣａＴｊＯｓ −８ｉ２０ｓ４ｉ０２系の話電
体等もある。[Prior art] As a conventional temperature-compensating ceramic phone body, JO is used in its composition.
4j02. [;a,O,-TIO,,5rTiOs
There are those using titanate such as LaTiOs,
In addition, in order to reduce the temperature coefficient and improve the dielectric constant, various combinations of these titanates, such as Mg04i0z
-CaTjOs type telephones and special public service 11333/1973
MgO.TiO,-CaTi0.
- La, 0.4i02 series phones, and even 5rTi
There are also telephones of the Os-CaTjOs-8i20s4i02 series.
［発明が解決しようとする課題］
しかし、上記のような各種従来例としての温度補償用磁
器話電体においては、各成分間の組成比等を勘案し、誘
電率の温度変化率を小さくしようとすると誘電率自体が
小さくなり、逆に誘電率を高めようとするとその温度変
化率が大ぎくなってしまい、話電損失も悪化するという
二律背反的な要素を抱えていた。[Problem to be solved by the invention] However, in the various conventional temperature-compensating porcelain telephone bodies as described above, it is necessary to take into consideration the composition ratio between each component and reduce the rate of change in dielectric constant with temperature. If so, the dielectric constant itself becomes small, and conversely, if you try to increase the dielectric constant, the rate of change with temperature becomes large, which leads to the trade-off of worsening telephone loss.
本発明はこの点に鑑み、誘電率は２５０以上、Ｑ値は３
０００以上と共に高いが、誘電率の温度変化率（温度係
数）の絶対値は１０００ ｐｐｍ／’ｅ以下に収まる温
度補償用磁器話電体を提供せんとするものである。In view of this point, the present invention has a dielectric constant of 250 or more and a Q value of 3.
000 or higher, but the absolute value of the rate of change in dielectric constant with temperature (temperature coefficient) is less than 1000 ppm/'e.
［課題を解決するための手段］
上記問題点を解決するため、本発明者は種々実験の結果
、５７．３０モル％から６５．５０モル％までのチタン
酸ストロンチウムと、３３．８０モル％から４０．９０
モル％までのチタン酸カルシウムと、０．０８モル％か
ら０．６２モル％までの酸化ランタンと、０．２０モル
％から２．１０モル％までの酸化チタンとを含む組成で
あって、酸化チタンの酸化ランタンに対するモル比が２
．７０から３．４０の範囲内にある温度補償用磁器話電
体を提案する。[Means for Solving the Problems] In order to solve the above-mentioned problems, as a result of various experiments, the present inventor found that strontium titanate from 57.30 mol% to 65.50 mol% and strontium titanate from 33.80 mol% to 65.50 mol%. 40.90
A composition comprising up to mol% calcium titanate, 0.08 mol% to 0.62 mol% lanthanum oxide, and 0.20 mol% to 2.10 mol% titanium oxide, The molar ratio of titanium to lanthanum oxide is 2
．． We propose a temperature-compensating porcelain telephone body in the range of 70 to 3.40.
上記した各成分に関する数値範囲の限定はもちろん、全
て有意のものであり、チタン酸ストロンチウムに関して
は、そのモル％が本発明での特定範囲を上に越えても下
に越えても、温度係数の絶対値は、達成すべぎ値である
１ ０００ ｐｐｍ／ｌを越えてしまう。Of course, all of the above-mentioned limitations on numerical ranges for each component are significant, and for strontium titanate, regardless of whether its mol% exceeds the specified range in the present invention, the temperature coefficient The absolute value exceeds 1 000 ppm/l, which is the value that should be achieved.
これは同様に、チタン酸カルシウムについても言え、そ
のモル％が本発明における特定範囲を上に越えても下に
越えても、温度係数の絶対値はやはり、達成すべき値で
ある１ ０００ ｐｐｍ／’Ｃを越えてしまう。This is similarly true for calcium titanate, and whether its mole % exceeds above or below the specified range in the present invention, the absolute value of the temperature coefficient is still the value to be achieved of 1 000 ppm. /'C will be exceeded.
酸化ランタンについても、そのモル％に関する上記範囲
の下限である０、０８モル％を下回ると訪電率が所期値
２５０に至らず、上限である０、６２モル％を越えると
Ｑ値が極めて低くなる。Regarding lanthanum oxide, if it falls below the lower limit of 0.08 mol% in the above range regarding lanthanum oxide, the visiting rate will not reach the desired value of 250, and if it exceeds the upper limit of 0.62 mol%, the Q value will become extremely low. It gets lower.
酸化チタンについても同様で、そのモル％が上記範囲の
下限である０、２０モル％未満では温度係数の絶対値が
１０００ ｐｐｍ／ｌ：を越えてしまい、上限である２
、１０モル％を越えると重ね焼成時に焼結体の融着が著
しくなり、製造上、問題となる。The same goes for titanium oxide; if its mol% is less than 0.20 mol%, which is the lower limit of the above range, the absolute value of the temperature coefficient will exceed 1000 ppm/l, which is the upper limit of 2.
If the content exceeds 10 mol %, the sintered body will significantly fuse during stack firing, which will cause problems in production.
さらに、各成分が全て、そのモル％に関し、それぞれに
特定されている上記範囲内を満たしたにしても、酸化チ
タンの酸化ランタンに対するモル比がやはり上記特定範
囲内にないと好ましい結果は得られず、当該範囲の下限
２．７０未満では話電率２５０以上の値は得られないし
、逆に上限３．４０を越えてしまうと３０００以上のＱ
値が得られないか、絶対値で１０００ ｐｐ−／を以内
の温度係数特性が得られない。Furthermore, even if all of the components meet the above specified ranges in terms of mole percent, favorable results will not be obtained unless the molar ratio of titanium oxide to lanthanum oxide is within the above specified ranges. First, if the lower limit of the range is less than 2.70, you will not be able to get a call rate of 250 or more, and if the upper limit is 3.40, you will not get a Q of 3000 or more.
Either no value can be obtained, or a temperature coefficient characteristic within 1000 pp-/ in absolute value cannot be obtained.
［作 用］
本発明では、チタン酸ストロンチウム、チタン酸カルシ
ウム、酸化ランタン、酸化チタンの主たる四成分に関す
る各モル％に関しての範囲特定と、酸化チタンの酸化ラ
ンタンに対するモル比に関する範囲特定をなしているが
、これら全ての条件が満たされると、それで初めて、２
５０以上の高い話電率、３０００以上の高いＱ値を維持
しながら、絶対値にして１０００ ｐｐｍ／”Ｃ以下の
優れた温度係数を持つ温度補償用磁器話電体を得ること
がで籾る。[Function] In the present invention, ranges are specified for each mole percent of the four main components of strontium titanate, calcium titanate, lanthanum oxide, and titanium oxide, and ranges are specified for the molar ratio of titanium oxide to lanthanum oxide. However, only when all these conditions are satisfied, 2
It is possible to obtain a temperature-compensating porcelain telephone body having an excellent temperature coefficient of 1000 ppm/"C or less in absolute value while maintaining a high call rate of 50 or more and a high Q value of 3000 or more. .
［実 施 例］
以下、５ｒＴｉＯ，−ＣａＴｉ０．− Ｌａ、Ｏ，・Ｔ
ｉＯ２系組成物である本発明の実施例を通じ、当該本発
明にて限定された各主成分に関するモル％範囲や、酸化
チタンの酸化ランタンに対するモル比範囲の有意性ない
し合理性を証明する。[Example] Below, 5rTiO, -CaTi0. - La, O, ・T
Through examples of the present invention, which are iO2-based compositions, the significance or rationality of the mole % range for each main component and the molar ratio range of titanium oxide to lanthanum oxide, which are limited in the present invention, will be demonstrated.
まず、出発原料として５ｒＣＯｓ とＴｉｅ、を用意し
、これらをモル比で１．０となるように秤量し、水を加
えてボール・ミルにより１８時間、湿式混合した。First, 5rCOs and Tie were prepared as starting materials, weighed so that the molar ratio was 1.0, water was added, and wet mixing was performed in a ball mill for 18 hours.
こうして得られた混合物を脱水、乾燥し、温度１１２０
℃で仮焼きし、チタン酸ストロンチウム（ＳｒＴｉＯｓ
）を得た。The mixture thus obtained was dehydrated and dried at a temperature of 1120°C.
Calcined at ℃, strontium titanate (SrTiOs
) was obtained.
また、ＣａＣＯ５とＴｉｅ２とを用意し、これらをモル
比で１．０となるようにｆ！量し、同様にボール・ミル
により１８時間、湿式混合した後、脱水、乾燥し、これ
も上記同様に１１２０℃で仮焼きして、チタン酸カルシ
ウム（ｃａｒｉｏ３）を得た。In addition, CaCO5 and Tie2 are prepared, and the molar ratio of these is f! After weighing and wet-mixing using a ball mill for 18 hours, the mixture was dehydrated and dried, and calcined at 1120° C. in the same manner as above to obtain calcium titanate (cario3).
これと別途に、酸化ランタン（Ｌａｗ’ｓ）と酸化チタ
ン（Ｔｉｅ、）を用意し、上記で作成したチタン酸スト
ロンチウム、チタン酸カルシウムの各粉体な加えた全部
で四成分の組成比を下記第１表に示されるように様々に
異ならせ、あるいはまた酸化チタンの酸化ランタンに対
するモル比を異ならせることにより、試料番号１番から
１６番までの混合された試料粉体を用意した。Separately, we prepared lanthanum oxide (Law's) and titanium oxide (Tie), and added the strontium titanate and calcium titanate powders prepared above.The composition ratio of the four components in total is as follows. Mixed sample powders numbered 1 to 16 were prepared by varying the molar ratio of titanium oxide to lanthanum oxide as shown in Table 1.
それら各試料粉体を焼成した後、磁器話電体としてそれ
ぞれがその認電率、温度係数、Ｑ値においてどのような
特性を示すかを調べるため、全ての試料粉体１〜１６に
対し、粉体重量にして２重量％のポリビニルアルコール
を水に溶解したバインダ溶液を混練し、造粒した後、２
０００ Ｋｇ／ｃｍ’の圧力下で直径１６ｍｍ、厚さ０
．６ ｍｍの円板に成形し、これを電気炉にて１３５０
℃、２時間、焼成した。After firing each sample powder, all sample powders 1 to 16 were subjected to After kneading and granulating a binder solution containing 2% by weight of polyvinyl alcohol dissolved in water,
000 Kg/cm' under pressure, diameter 16mm, thickness 0
．． Formed into a 6 mm disc and heated in an electric furnace at 1350
It was baked at ℃ for 2 hours.
このようにして得られた円板状の磁器の両生面に通常の
手法により銀電極を焼き付は形成し、測定用電極とした
。A silver electrode was baked on the bidirectional surface of the disc-shaped porcelain thus obtained by a conventional method to form a measurement electrode.
その上で、それぞれに異なる組成による上記１番から１
６番までの各試料磁器に対し、基準温度＋２０℃、周波
数Ｉ ＭＢ２、測定電圧Ｉ Ｖｒ＋ｓｓで８電率及びＱ
値を測定し、また、＋２０℃における８電率を基準とし
て、−２５℃から８５℃までの温度範囲内における温度
係数も測定した。On top of that, the above 1 to 1 with different compositions
For each sample porcelain up to No. 6, 8 electric power and Q at reference temperature +20℃, frequency I MB2, and measurement voltage I Vr + ss.
The temperature coefficient was also measured in the temperature range from -25°C to 85°C, based on the octocurrency at +20°C.
かくして測定された８電率、温度係数、Ｑ値の各結果も
、次葉第１表に併記されている。The results of the 8-electrification rate, temperature coefficient, and Q value thus measured are also listed in Table 1 below.
（以下、来貢余白）
上記第１表から明らかなように、本発明にて規定されて
いる各モル％範囲、すなわち、５ｒＴｉＯ，： ５７．
３０〜６５．５０モル％；ＣａＴｉＯｓ： ３３．８０
〜４０．９０モル％：Ｌａ２Ｏ３： ｏ、ｏ ８〜０
．６２モル％；ＴｉＯ２： ０．２０〜２．１０モル
％：の全てを満たし、かつ、ＴｉＯ２とＬａ２０．のモ
ル比が２、７０ ＜ Ｔｉ（ｈ／ Ｌａｔ、ｓ ＜ ３
．４０ ；である試料番号１．２，４，５，６，７．１
５番の各試料にあっては、いずれも、本発明の所期の狙
いである話電率２５０以上、Ｑ値３０００以上、温度係
数の絶対値ｔｏｏｏｐｐ■／℃以下という優れた特性を
完全に満足している。(Hereinafter referred to as "contribution margin") As is clear from Table 1 above, each mole % range defined in the present invention, that is, 5rTiO: 57.
30-65.50 mol%; CaTiOs: 33.80
~40.90 mol%: La2O3: o, o 8-0
．． 62 mol%; TiO2: 0.20 to 2.10 mol%: and TiO2 and La20. The molar ratio of 2, 70 < Ti (h/Lat, s < 3
．． 40 ; Sample numbers 1.2, 4, 5, 6, 7.1
Each of the samples No. 5 completely achieved the excellent characteristics that were the intended aims of the present invention, such as a call rate of 250 or more, a Q value of 3000 or more, and an absolute value of temperature coefficient of less than toopp■/℃. Is pleased.
これに対し、上記以外の試料、つまり第１表中にて試料
番号右肩にアスタリスク・マーク“＊“の付されている
試料のように、本発明による特定条件のいずれか一つで
も満たしていない試料にあっては、８電率、Ｑ値、温度
係数の絶対値の少なくともいずれか一つにおいて所望の
値範囲が得られていない。On the other hand, samples other than those mentioned above, such as samples with an asterisk "*" on the right side of the sample number in Table 1, do not meet any one of the specific conditions according to the present invention. For samples that do not have the desired value range, the desired value range is not obtained in at least one of the absolute values of the octoelectricity, the Q value, and the temperature coefficient.
例えば試料番号３番と１６番の試料は、チタン酸ストロ
ンチウム、チタン酸カルシウム、酸化ランタン、酸化チ
タンの主たる四成分のいずれの組成比も本発明にて特定
される範囲内にあるが、酸化チタンの酸化ランタンに対
するモル比が上記特定範囲である２、７０〜３．４０の
中に人っておらず、３番の試料では上限赳えの約３．４
７．１６番の試料では下限未満の約２．６５となってい
る。For example, in samples No. 3 and No. 16, the composition ratios of the four main components of strontium titanate, calcium titanate, lanthanum oxide, and titanium oxide are within the range specified by the present invention, but titanium oxide There is no one whose molar ratio to lanthanum oxide is within the above specified range of 2,70 to 3.40, and in sample No. 3, it is about 3.4, which is the upper limit.
7. Sample No. 16 has a value of about 2.65, which is less than the lower limit.
そのため、３番の試料ではＱ値が極めて低く、１６番の
試料では８電率が２５０未満となっている。Therefore, the Q value of sample No. 3 is extremely low, and the octocurrency of sample No. 16 is less than 250.
８番、９番の試料は、チタン酸ストロンチウムのモル％
とチタン酸カルシウムのモル％とがそれぞれ、本発明に
よる特定範囲を上または下に越えており、そのような試
料ではいずれも温度係数を低く抑え切れていない。Samples No. 8 and 9 have strontium titanate mole%
and the mole % of calcium titanate exceed above or below the specified range according to the present invention, respectively, and the temperature coefficient cannot be kept low in any of such samples.
１０番と１３番の試料では、チタン酸カルシウムのモル
％が本発明による特定範囲の上限を越えており、そのよ
うな試料では８電率も低い外、特に１０番の試料では温
度係数が甚だしく悪くなっている。In samples No. 10 and No. 13, the mole % of calcium titanate exceeds the upper limit of the specified range according to the present invention, and in addition to the low 8-electricity in such samples, the temperature coefficient is extremely high in sample No. 10 in particular. It's getting worse.
逆に、チタン酸カルシウムのモル％特定範囲に関し、そ
の下限を下回る試料である試着番号１１番の試料でも、
８電率は良いがＱ値が低く、温度係数もかなり悪い。On the contrary, regarding the specific range of mol% of calcium titanate, even sample No. 11, which is a sample below the lower limit,
8 Electricity is good, but the Q value is low and the temperature coefficient is also quite poor.
１２番の試料は、酸化ランタンのモル％が本発明での特
定範囲を上回っており、高いＱ値が得られていない。In sample No. 12, the mol% of lanthanum oxide exceeds the specified range in the present invention, and a high Q value was not obtained.
最後に残フた１４番の試料は、酸化ランタン共々、酸化
チタンのモル％が本発明での特定範囲を下回っており、
ｉｔ率と温度係数に望ましい値が得られていない。In sample No. 14, which was left at the end, the mole percentage of titanium oxide as well as lanthanum oxide was below the specified range in the present invention.
Desired values for IT rate and temperature coefficient have not been obtained.
以上のように、本書中に掲げた第１表には、本発明によ
る必須構成要件の全てを満たした試料群はもちろんのこ
と、当該必須構成要件としての各条件の中、一つを除く
と他は全て満たされている試料例の様々な組み合せも示
され、かつ、そのようなものでは決して本発明に所期の
結果が得られないこと、すなわち、例え一つと言えども
、本発明により規定される要件を満たさないと本発明に
所期の効果は得られないことを明示しており、逆説的に
本発明構成要件の全てを満たさねばならないことの必然
性を証明している。As mentioned above, Table 1 listed in this document not only includes sample groups that meet all of the essential constituent requirements of the present invention, but also includes samples that meet all of the essential constituent requirements of the present invention except for one. Various combinations of sample examples are also shown in which all other conditions are met, and it is clear that such combinations will never give the desired results of the present invention, i.e. even if only one is specified by the present invention. It is clearly shown that the desired effects of the present invention cannot be obtained unless the requirements are met, and paradoxically proves the necessity of satisfying all of the constituent requirements of the present invention.
［効 果］
本発明によると、２５０以上の高い８電率な有し、３０
００以上の高いＱ値を維持しながらも、なおかつ、温度
係数の絶対値を１０００ ｐｐｍ／’Ｃ以下にまで大幅
に低減するに成功した温度補償用磁器誂電体を得ること
かでざる。[Effects] According to the present invention, it has a high octane rate of 250 or more,
The objective is to obtain a temperature-compensating porcelain electrical body that has succeeded in significantly reducing the absolute value of the temperature coefficient to 1000 ppm/'C or less while maintaining a high Q value of 00 or more.
また、焼成時の融着等の問題も発生せず、製造性を損う
こともない。Furthermore, problems such as fusion during firing do not occur, and manufacturability is not impaired.
Claims (1)
ストロンチウムと、３３．８０モル％から４０．９０モ
ル％までのチタン酸カルシウムと、０．０８モル％から
０．６２モル％までの酸化ランタンと、０．２０モル％
から２．１０モル％までの酸化チタンとを含む組成であ
って、該酸化チタンの上記酸化ランタンに対するモル比
が２．７０から３．４０の範囲内にある温度補償用磁器
誘電体。Strontium titanate from 57.30 mol% to 65.50 mol%, calcium titanate from 33.80 mol% to 40.90 mol%, and oxidation from 0.08 mol% to 0.62 mol%. Lanthanum and 0.20 mol%
to 2.10 mol % of titanium oxide, wherein the molar ratio of the titanium oxide to the lanthanum oxide is in the range of 2.70 to 3.40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2162645A JPH0456005A (en) | 1990-06-22 | 1990-06-22 | Porcelain dielectric substance for temperature compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2162645A JPH0456005A (en) | 1990-06-22 | 1990-06-22 | Porcelain dielectric substance for temperature compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0456005A true JPH0456005A (en) | 1992-02-24 |
Family
ID=15758561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2162645A Pending JPH0456005A (en) | 1990-06-22 | 1990-06-22 | Porcelain dielectric substance for temperature compensation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0456005A (en) |
-
1990
- 1990-06-22 JP JP2162645A patent/JPH0456005A/en active Pending
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