JPS5951087B2 - dielectric porcelain material - Google Patents
dielectric porcelain materialInfo
- Publication number
- JPS5951087B2 JPS5951087B2 JP52148312A JP14831277A JPS5951087B2 JP S5951087 B2 JPS5951087 B2 JP S5951087B2 JP 52148312 A JP52148312 A JP 52148312A JP 14831277 A JP14831277 A JP 14831277A JP S5951087 B2 JPS5951087 B2 JP S5951087B2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- temperature
- dielectric porcelain
- 3bao
- dielectric constant
- 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.)
- Expired
Links
- 229910052573 porcelain Inorganic materials 0.000 title description 7
- 239000000463 material Substances 0.000 title description 2
- 239000000203 mixture Substances 0.000 claims description 8
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 description 3
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 2
- 229910019704 Nb2O Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 235000008939 whole milk Nutrition 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Insulating Materials (AREA)
Description
【発明の詳細な説明】
本発明は誘電体磁器材料、特にＢａＯ、ＺｎＯ、ＭｇＯ
、Ｎｂ。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to dielectric ceramic materials, particularly BaO, ZnO, MgO.
, Nb.
Ｏ。、Ｔａ。Ｏ。の成分で構成される誘電体共振器など
に使用される磁器材料に関するものであり、誘電率（ε
）が大きく、無負荷Ｑが大きく、さらに共振周波数の温
度安定度（τｆ）の優れたマイクロ波用誘電体共振器を
構成し得る誘電体磁器材料を堤供しようとするものであ
る。従来から、マイクロ波領域において、マイクロ波回
路のインピーダンス整合や、誘電体共振器などに、誘電
体が応用されてきている。近年、特に、マイクロ波回路
の集積化の技術が進歩するにともない、発振器の周波数
の安定化などに、高誘電率、低損失、低価格の誘電体磁
器を使用して、電子機器を小型化することが積極的に進
められている。これまで、この種の誘電体材料としては
、ＢａＯ−ＴｉＯ。系磁器、および、この元素の一部を
他の元素で置換した磁器、さらには誘電率が負の温度変
化をもつＴｉ０。と正の誘電率の温度変化をもつ誘電体
磁器とを組合わせたものを使用する場合が多い。しかし
、これらは、誘電体損失が大きかつたり、誘電率の温度
変化のばらつきが大きかつたり、あるいは共振周波数の
温度安定度が大きすぎたりするという欠点がある。O. , Ta. O. This relates to ceramic materials used in dielectric resonators, etc., which are composed of components with a dielectric constant (ε
), a large unloaded Q, and an excellent temperature stability (τf) of the resonance frequency. BACKGROUND ART Dielectric materials have been applied to impedance matching of microwave circuits, dielectric resonators, etc. in the microwave region. In recent years, especially as the technology for integrating microwave circuits has progressed, electronic devices have been miniaturized by using dielectric ceramics with high dielectric constant, low loss, and low cost to stabilize the frequency of oscillators. This is being actively pursued. Until now, BaO-TiO has been used as this type of dielectric material. system porcelain, porcelain in which some of these elements are replaced with other elements, and Ti0 whose dielectric constant changes negatively with temperature. In many cases, a combination of dielectric ceramic and dielectric ceramic having a positive dielectric constant that changes with temperature is used. However, these have drawbacks such as large dielectric loss, large variations in temperature change in dielectric constant, or too large temperature stability of resonant frequency.
また、共振周波数の温度係数を変化させようとすると、
Ｑがいちぢる・しく低下するなど、実用上の問題が多い
。本発明はこれらの欠点を除いたものであり、一般式ｗ
（３Ｂａ０−ＺｎＯ−Ｎｂ、Ｏ０）−ｘ（３ＢａＯ・Ｚ
ｎＯ−Ｔａ２Ｏ５）−ｙ（３ＢａＯ−ＭｇＯ−Ｎｂ２Ｏ
５）一Ｚ（３ＢａＯ−ＭｇＯ−Ｔａ２Ｏ５）で表わされ
る組成に、おいて、０．０１≦ｗ≦０．９７、０．０１
≦Ｘ≦０．９７、０．０１≦ｙ≦０．９７、０．０１≦
ｚ≦０．９７（ただし、ｗ＋ｘ＋ｙ＋ｚ＝１）の範囲内
にある組成の磁器材料が、優れた誘電体マイクロ波共振
器になることを見出したことにもとづくものである。フ
以下、実施例にもとづいて、本発明を説明する。Also, if you try to change the temperature coefficient of the resonant frequency,
There are many practical problems such as a sudden drop in Q. The present invention eliminates these drawbacks, and the general formula w
(3Ba0-ZnO-Nb, O0)-x(3BaO・Z
nO-Ta2O5)-y(3BaO-MgO-Nb2O
5) In the composition represented by -Z (3BaO-MgO-Ta2O5), 0.01≦w≦0.97, 0.01
≦X≦0.97, 0.01≦y≦0.97, 0.01≦
This is based on the discovery that a ceramic material having a composition within the range of z≦0.97 (where w+x+y+z=1) can be an excellent dielectric microwave resonator. The present invention will be explained below based on Examples.
まず、ＢａＣＯ３、ＺｎＯ、ＭｇＯ、Ｎｂ。First, BaCO3, ZnO, MgO, and Nb.
ｏ。およびＴａ、Ｏ。の出発原料を各組成に応じて秤量
し、めのうボールを備え、かつゴム内張りしたホールミ
ルクを用いて、純水とともに、湿式混合した。この混合
物をボールミルより取り出して乾燥してから、空気中に
おいて１１００℃で２時間仮焼した後、ボールミルで湿
式粉砕した。ボールミルから粉砕泥しようを取り出し、
これを乾燥した後、圧力７００ｋｇ／Ｃｍ３で直径２５
ｍｍの円板に成形し、それを１３６０〜１５５０℃の範
囲内の温度で２時間、空気中において焼成して、下表に
示す組成の誘電体磁器を得た。次に、各磁器から、それ
ぞれ直径５ｍｍ、厚さ２ｍｍの寸法の円板形磁器の試料
を切出し、その共振周波数（ほぼＩＩＧル）と直径から
誘電率（ε）を、また帯域反射法により無負荷Ｑ（Ｑｕ
）を測定した。共振周波数の温度安定度（τｆ）につい
ては、温度槽に各試料を入れ、−３０℃から＋７０℃の
温度変化におけるトラツプ周波数の変化を測定して求め
た。その結果を下表に示す。の組成比率を示す。o. and Ta, O. The starting materials were weighed according to each composition and wet-mixed with pure water using whole milk equipped with an agate bowl and lined with rubber. This mixture was taken out from the ball mill, dried, calcined in air at 1100° C. for 2 hours, and then wet-pulverized using a ball mill. Take out the crushed slurry from the ball mill,
After drying this, a pressure of 700 kg/cm3 was applied to a diameter of 25
It was molded into a disk with a diameter of mm and fired in air at a temperature within the range of 1360 to 1550° C. for 2 hours to obtain dielectric porcelain having the composition shown in the table below. Next, a disk-shaped porcelain sample with dimensions of 5 mm in diameter and 2 mm in thickness was cut out from each piece of porcelain, and the dielectric constant (ε) was determined from the resonance frequency (approximately IIGle) and diameter, and by the band reflection method. Load Q (Qu
) was measured. The temperature stability (τf) of the resonance frequency was determined by placing each sample in a temperature bath and measuring the change in trap frequency as the temperature changed from -30°C to +70°C. The results are shown in the table below. shows the composition ratio of
表より明らかなように、本発明の誘電体磁器材料は、マ
イクロ波領域において、無負荷Ｑが大きく、誘電率が比
較的大きく、さらに共振周波数の温度安定度の改善され
た優れたものであることがわかる。As is clear from the table, the dielectric ceramic material of the present invention has a large no-load Q, a relatively large dielectric constant, and is excellent in the temperature stability of the resonance frequency in the microwave region. I understand that.
なお、本発明にかかる磁器は、低周波領域においても誘
電損失が小さく、かつ誘電率の温度変化が小さいので、
磁器コンデンサ用としても優れた材料であることを確認
した。In addition, the porcelain according to the present invention has small dielectric loss even in the low frequency range and small temperature change in dielectric constant, so
It was confirmed that it is an excellent material for ceramic capacitors.
Claims (1)
ｘ（３ＢａＯ・ＺｎＯ・Ｔａ＿２Ｏ＿５）−ｙ（３Ｂａ
Ｏ・ＭｇＯ・Ｎｂ＿２Ｏ＿５）−ｚ（３ＢａＯ・ＭｇＯ
・Ｔａ＿２Ｏ＿５）で表わされる組成において、０．０
１≦ｗ≦０．９７、０．０１≦ｘ≦０．９７、０．０１
≦ｙ≦０．９７、０．０１≦ｚ≦０．９７（ただし、ｗ
＋ｘ＋ｙ＋ｚ＝１）の範囲内にある組成であることを特
徴とする誘電体磁器材料。1 General formula w(3BaO・ZNO・Nb_2O_5)−
x(3BaO・ZnO・Ta_2O_5)−y(3Ba
O・MgO・Nb_2O_5)-z(3BaO・MgO
・In the composition represented by Ta_2O_5), 0.0
1≦w≦0.97, 0.01≦x≦0.97, 0.01
≦y≦0.97, 0.01≦z≦0.97 (however, w
A dielectric ceramic material characterized by having a composition within the range of +x+y+z=1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52148312A JPS5951087B2 (en) | 1977-12-09 | 1977-12-09 | dielectric porcelain material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52148312A JPS5951087B2 (en) | 1977-12-09 | 1977-12-09 | dielectric porcelain material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5480600A JPS5480600A (en) | 1979-06-27 |
| JPS5951087B2 true JPS5951087B2 (en) | 1984-12-12 |
Family
ID=15449965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52148312A Expired JPS5951087B2 (en) | 1977-12-09 | 1977-12-09 | dielectric porcelain material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5951087B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617263B2 (en) * | 1988-09-30 | 1994-03-09 | 住友金属鉱山株式会社 | Dielectric porcelain composition |
-
1977
- 1977-12-09 JP JP52148312A patent/JPS5951087B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5480600A (en) | 1979-06-27 |
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