JP2518166B2 - High frequency dielectric ceramic composition - Google Patents
High frequency dielectric ceramic compositionInfo
- Publication number
- JP2518166B2 JP2518166B2 JP2039080A JP3908090A JP2518166B2 JP 2518166 B2 JP2518166 B2 JP 2518166B2 JP 2039080 A JP2039080 A JP 2039080A JP 3908090 A JP3908090 A JP 3908090A JP 2518166 B2 JP2518166 B2 JP 2518166B2
- Authority
- JP
- Japan
- Prior art keywords
- high frequency
- composition
- dielectric ceramic
- ceramic composition
- range
- 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 - Lifetime
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- Compositions Of Oxide Ceramics (AREA)
- Ceramic Capacitors (AREA)
- Inorganic Insulating Materials (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ この発明はマイクロ波やミリ波などの高周波領域にお
いて、誘電体共振器やMIC用誘電体基板などの用途に用
いられる高周波用誘電体磁器組成物に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a high frequency dielectric ceramic composition used for applications such as a dielectric resonator and a dielectric substrate for MIC in a high frequency region such as a microwave and a millimeter wave. It is about things.
＜従来の技術＞ 従来、高周波用誘電体磁器組成物としては、例えば特
開昭60−124305号公報にて示されるように、Ba（SnxMgy
Taz）Ｏ 7/2−x/2−3y/2の一般式で表わされる組成に
おいて、0.04≦ｘ≦0.26、0.23≦ｙ≦0.31、0.51≦ｚ≦
0.65（但し、ｘ＋ｙ＋ｚ＝１）の範囲にある組成物が知
られている。<Prior Art> Conventionally, as a high frequency dielectric porcelain composition, as disclosed in, for example, JP-A-60-124305, Ba (Sn x Mg y
Ta z ) O 7 / 2−x / 2−3y / 2 In the composition represented by the general formula, 0.04 ≦ x ≦ 0.26, 0.23 ≦ y ≦ 0.31, 0.51 ≦ z ≦
A composition within the range of 0.65 (however, x + y + z = 1) is known.
そして、このような高周波用誘電体磁器組成物は、高
周波領域において大きな比誘電率と大きなＱ値を有し、
周波数の温度係数が良好な材料である。Further, such a high frequency dielectric ceramic composition has a large relative permittivity and a large Q value in a high frequency region,
It is a material with a good temperature coefficient of frequency.
＜発明が解決しようとする課題＞ しかしながら、最近では使用する周波数領域がさらに
高くなってきており、これに対応して更に高いＱ値を有
する材料が要望されている。<Problems to be Solved by the Invention> However, recently, the frequency range to be used has become higher, and in response to this, a material having a higher Q value has been demanded.
従って、この発明の主たる目的は高周波領域において
高い比誘電率を有すると共に、従来の磁器組成物に比べ
てさらに高いＱ値を有する高周波用誘電体磁器組成物を
提供することにある。Therefore, a main object of the present invention is to provide a high frequency dielectric ceramic composition having a high relative dielectric constant in a high frequency region and a Q value higher than that of a conventional ceramic composition.
＜課題を解決するための手段＞ 本発明者らは上記に鑑みて高い比誘電率とＱ値を有す
る磁器組成物を得るべく検討の結果、この発明に至った
ものである。<Means for Solving the Problems> The present inventors have arrived at the present invention as a result of studies to obtain a porcelain composition having a high relative dielectric constant and a Q value in view of the above.
即ち、この発明はBaxMgy（SbvTa1-v）zOw（但し、ｘ
＋ｙ＋ｚ＝１、ｗは任意）と表わしたとき、（x,y,z）
がA:（0.495、0.175、0.330）、B:（0.495、0.170、0.3
35）、C:（0.490、0.170、0.340）、D:（0.490、0.18
0、0.330）の４点で囲まれるモル比の領域にあり、かつ
0.001≦ｖ≦0.300の範囲にある高周波用誘電体磁器組成
物を提供するものである。That is, this invention is Ba x Mg y (Sb v Ta 1-v ) z O w (where x
+ Y + z = 1, w is arbitrary), (x, y, z)
Is A: (0.495, 0.175, 0.330), B: (0.495, 0.170, 0.3
35), C: (0.490, 0.170, 0.340), D: (0.490, 0.18
0, 0.330) in the molar ratio region surrounded by four points, and
It is intended to provide a dielectric ceramic composition for high frequency in the range of 0.001 ≦ v ≦ 0.300.
＜実施例＞ 以下、この発明を実施例により詳細に説明する。<Example> Hereinafter, the present invention will be described in detail with reference to examples.
まず、原料として高純度のBaCO3、MgCO3、Ta2O5およ
びSb2O5を準備した。これらの原料を第１表に示す所定
の組成が得られるように秤量し、ボールミルで16時間湿
式混合した。First, high-purity BaCO 3 , MgCO 3 , Ta 2 O 5 and Sb 2 O 5 were prepared as raw materials. These raw materials were weighed so that a predetermined composition shown in Table 1 was obtained, and wet-mixed for 16 hours by a ball mill.
この混合物を乾燥したのち、1300℃で３時間仮焼し、
仮焼物を得た。この仮焼物を水、有機バインダーと共に
ボールミルに入れ、16時間湿式粉砕した。After drying this mixture, it is calcined at 1300 ° C for 3 hours,
I got a calcined product. This calcined product was put in a ball mill together with water and an organic binder, and wet pulverized for 16 hours.
次いで、この粉砕物を乾燥したのち、50メッシュの網
を通して造粒し、得られた粉末を2000kg/cm2の圧力で12
mmφ×6mmtの寸法の円板状に成形した。Next, this pulverized product was dried and then granulated through a 50-mesh net, and the resulting powder was applied at a pressure of 2000 kg / cm 2 for 12
It was formed into a disk shape with dimensions of mmφ × 6 mmt.
更に、得られた円板状成形物を1600℃、６時間の条件
で焼成して磁器試料を得た。Further, the obtained disk-shaped molded product was fired at 1600 ° C. for 6 hours to obtain a porcelain sample.
かくして得られた磁器試料について、周波数10GHzに
おける比誘電率（εｒ）、Ｑ値および共振周波数の温度
係数τｆ（ppm/℃）を測定した。その結果は第１表に示
した。With respect to the thus obtained porcelain sample, the relative permittivity (εr), the Q value and the temperature coefficient τ f (ppm / ° C.) of the resonance frequency at a frequency of 10 GHz were measured. The results are shown in Table 1.
尚、表中＊印の試料番号のものは、この発明の範囲外
であり、他はすべてこの発明の範囲内である。In the table, sample numbers marked with * are outside the scope of the present invention, and others are within the scope of the present invention.
上表に示した実施例の結果をBaxMgy（Sb,Ta）Ｚの組
成比を表わす３成分組成図としての図面中に示した。同
図面における数字は試料番号を示す。なお、同図面にお
いて、この発明の範囲内にある組成比示す領域は、Ａ、
Ｂ、Ｃ、Ｄで囲まれた平行四辺形で示されている。 The results of the examples shown in the above table are shown in the drawings as a three-component composition diagram showing the composition ratio of Ba x Mg y (Sb, Ta) Z. The numbers in the figure indicate sample numbers. In the drawing, the region showing the composition ratio within the scope of the present invention is A,
It is shown as a parallelogram surrounded by B, C and D.
次に、この発明で、BaxMgy（SbvTa1-v）zOw（但し、
ｘ＋ｙ＋ｚ＝１、ｗは任意）で表わされる組成におい
て、その組成範囲を上述した範囲に限定した理由につい
て実施例中の第１表とも関連して述べると次の通りであ
る。Next, in the present invention, Ba x Mg y (Sb v Ta 1-v ) z O w (however,
In the composition represented by x + y + z = 1 and w is arbitrary), the reason why the composition range is limited to the above-described range will be described in relation to Table 1 in the examples as follows.
（１） 試料No.1,2,3,9のように３成分組成図において
頂点Ａ、Ｂを結ぶ線分ABの外側の組成物ではＱの値が低
くなり、特にこの発明の範囲から大きく離れた試料No.9
では、焼成が不安定になって好ましくない。(1) In the composition outside the line segment AB connecting the vertices A and B in the three-component composition diagram like sample Nos. 1, 2, 3, and 9, the value of Q becomes low, and especially from the range of the present invention, Remote sample No. 9
Then, the firing becomes unstable, which is not preferable.
（２） 試料No.10のように３成分組成図において頂点
Ａ、Ｄを結ぶ線分ADの外側の組成物ではＱ値が小さくな
り好ましくない （３） 試料No.11のように３成分組成図において頂点
Ｂ、Ｃを結ぶ線分BCの外側の組成物ではＱ値が小さくな
り好ましくない。(2) A composition outside the line segment AD connecting the vertices A and D in the three-component composition diagram such as sample No. 10 has a small Q value, which is not preferable. (3) A three-component composition like sample No. 11 In the figure, the composition outside the line segment BC connecting the vertices B and C has a small Q value, which is not preferable.
（４） 試料No.12のように３成分組成図において頂点
Ｃ、Ｄを結ぶ線分CDの外側の組成物ではＱ値が小さくな
り好ましくない。(4) A composition outside the line segment CD connecting the vertices C and D in the three-component composition diagram like Sample No. 12 has a small Q value, which is not preferable.
（５） 試料No.18のようにSbのモル比Ｖが＞0.330では
εｒ、Ｑ値が小さくなり、またτｆが負側に大きくなっ
て好ましくない。試料No.14のようにＶ＜0.001ではτｆ
が正側に大きくなって好ましくない。(5) When the molar ratio V of Sb is> 0.330 as in sample No. 18, ε r and Q value are small, and τ f is large on the negative side, which is not preferable. Τ f when V <0.001 as in sample No.14
Is large on the positive side, which is not preferable.
これに対して、この発明の高周波用誘電体磁器組成物
では高周波領域において21.6〜25.0という高い比誘電率
を維持しながら、11600〜25500の範囲の高いＱ値が得ら
れ、さらに−9.6〜＋9.5の範囲の良好なτｆの値を有す
るのである。On the other hand, in the high frequency dielectric ceramic composition of the present invention, a high Q value in the range of 11600 to 25500 is obtained while maintaining a high relative dielectric constant of 21.6 to 25.0 in the high frequency region, and -9.6 to +9. It has good values of τ f in the range of 0.5.
＜発明の効果＞ 以上説明したように、この発明によれば、マイクロ波
帯域でＱの値を11600〜25500の範囲で選択でき、τｆも
−9.6から＋9.5の範囲で任意に選択が可能であり、１〜
20GHz帯までの広い範囲で使用が可能な高周波用誘電体
磁器組成物を得ることができる。しかも該組成物を用い
れば大きな比誘電率を有し、共振周波数の温度係数の良
好な誘電率を得ることができるのである。<Effects of the Invention> As described above, according to the present invention, the value of Q in the microwave band can be selected in the range of 11600 to 25500, and τ f can be arbitrarily selected in the range of −9.6 to +9.5. Possible, 1 to
It is possible to obtain a high frequency dielectric ceramic composition that can be used in a wide range up to 20 GHz band. Moreover, by using the composition, it is possible to obtain a large relative permittivity and an excellent permittivity with a good temperature coefficient of resonance frequency.
図面は、この発明にかかる高周波用誘電体磁器組成物中
のBaxMgy（Sb,Ta）ｚの組成比の範囲を示す３成分組成
図である。The drawing is a three-component composition diagram showing the range of the composition ratio of Ba x Mg y (Sb, Ta) z in the high frequency dielectric ceramic composition according to the present invention.
Claims (1)
ｚ＝1,wは任意）と表わしたとき、ｘ、ｙ、ｚがそれぞ
れ以下に示すＡ、Ｂ、Ｃ、Ｄで囲まれるモル比の領域に
あり、かつ0.001≦ｖ≦0.300の範囲にあることを特徴と
する高周波用誘電体磁器組成物。 1. Ba x Mg y (Sb v Ta 1-v ) z O w (where x + y +
z = 1, w is arbitrary), x, y, and z are in the region of the molar ratios surrounded by A, B, C, and D shown below, and are in the range of 0.001 ≦ v ≦ 0.300. A dielectric porcelain composition for high frequencies, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2039080A JP2518166B2 (en) | 1990-02-19 | 1990-02-19 | High frequency dielectric ceramic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2039080A JP2518166B2 (en) | 1990-02-19 | 1990-02-19 | High frequency dielectric ceramic composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03241605A JPH03241605A (en) | 1991-10-28 |
| JP2518166B2 true JP2518166B2 (en) | 1996-07-24 |
Family
ID=12543125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2039080A Expired - Lifetime JP2518166B2 (en) | 1990-02-19 | 1990-02-19 | High frequency dielectric ceramic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2518166B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60200855A (en) * | 1984-03-27 | 1985-10-11 | 宇部興産株式会社 | Dielectric ceramic composition |
-
1990
- 1990-02-19 JP JP2039080A patent/JP2518166B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03241605A (en) | 1991-10-28 |
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