JPH0731932B2 - Dielectric porcelain material - Google Patents
Dielectric porcelain materialInfo
- Publication number
- JPH0731932B2 JPH0731932B2 JP62150530A JP15053087A JPH0731932B2 JP H0731932 B2 JPH0731932 B2 JP H0731932B2 JP 62150530 A JP62150530 A JP 62150530A JP 15053087 A JP15053087 A JP 15053087A JP H0731932 B2 JPH0731932 B2 JP H0731932B2
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- value
- dielectric
- ceo
- composition
- dielectric ceramic
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は，例えばマイクロ波通信機器内の誘電体共振
器，分波器，マイクロストリップ回路用基板などに使用
する誘電体磁器材料に関するものである。The present invention relates to a dielectric ceramic material used for, for example, a dielectric resonator, a duplexer, a substrate for a microstrip circuit in a microwave communication device. is there.
BaO−TiO2−Sm2O3−Nd2O3系なる組成系を有する磁器材
料はマイクロ波通信用誘電体磁器材料として用いられて
いる。Ceramic material having a BaO-TiO 2 -Sm 2 O 3 -Nd 2 O 3 based consists composition system is used as a dielectric ceramic material for microwave communication.
最近，マイクロ波通信機器に関する小型化の傾向に伴な
い，誘電体共振器などの誘電体磁器材料を使用する部品
の小型化が強く要求されている。この部品の小型化は，
高い誘電率，安定な温度特性，マイクロ波での大きいＱ
値，これらすべての特性を満足する誘電体磁器材料の使
用によりり積極的に進めることができる。BaO−TiO2−S
m2O3−Nd2O3系磁器材料は，比誘電率（εｒ）が50〜95
で，比誘電率の温度係数（τｋ）が約−200〜＋200ppm/
℃,Q値は本発明者らがマイクロストリップ型誘電体共振
器として9.5GHz帯で測定した場合500〜900の値を持ち，
上記の応用に必要な特性をほぼ満足している。Recently, with the trend toward miniaturization of microwave communication devices, there is a strong demand for miniaturization of parts using dielectric ceramic materials such as dielectric resonators. The miniaturization of this part is
High dielectric constant, stable temperature characteristics, large Q in microwave
By using a dielectric porcelain material that satisfies all of these characteristics, it is possible to proceed positively. BaO-TiO 2 -S
The m 2 O 3 —Nd 2 O 3 based porcelain material has a relative dielectric constant (εr) of 50 to 95.
And the temperature coefficient (τk) of the relative permittivity is approximately -200 to + 200ppm /
When the present inventors measured the microstrip type dielectric resonator in the 9.5 GHz band, the C and Q values have values of 500 to 900,
The characteristics required for the above applications are almost satisfied.
この分野の技術については例えば特公昭60−18083号公
報にに記載されている。The technology in this field is described in, for example, Japanese Patent Publication No. 60-18083.
一般的に，マイクロ波帯でのＱ値は，マイクロ波の周波
数に反比例し，高周波になる程Ｑ値が小さくなる。従っ
て，より高周波での応用を考えるならば，よりＱ値の大
きい材料が要求されている。従来のBaO−TiO2−Sm2O3−
Nd2O3系磁器材料の特性は高いＱ値を示すものの，まだ
不充分であるという問題点があった。Generally, the Q value in the microwave band is inversely proportional to the microwave frequency, and the Q value decreases as the frequency becomes higher. Therefore, when considering applications at higher frequencies, materials with higher Q values are required. Conventional BaO-TiO 2 -Sm 2 O 3 -
The characteristics of Nd 2 O 3 based porcelain materials show a high Q value, but there is a problem that they are still insufficient.
この発明は，上記のような問題点を解消するためになさ
れたものであり，部品の小型化に必要な高い誘電率と安
定な温度特性を有し，より高周波での応用に必要な大き
いＱ値を持った誘電体磁器材料を提供することを目的と
する。The present invention has been made to solve the above problems, has a high dielectric constant and stable temperature characteristics required for miniaturization of parts, and has a large Q required for application at higher frequencies. The object is to provide a dielectric ceramic material having a value.
この発明の誘電体磁器材料は，一般式xBaO−yTiO2−ｚ
｛（１−ｍ−ｎ）Sm2O3−mNd2O3−ｎ（CaO・CeO2）｝で
表わされ，モル比が0.10≦ｘ≦0.25,0.60≦ｙ≦0.85,0.
05≦ｚ≦0.30,0≦ｍ＜1,0＜ｎ≦0.5,x＋ｙ＋ｚ＝１の組
成範囲のものである。The dielectric ceramic material of the present invention have the general formula xBaO-yTiO 2 -z
It is represented by {(1-m−n) Sm 2 O 3 −mNd 2 O 3 −n (CaO · CeO 2 )}, and the molar ratio is 0.10 ≦ x ≦ 0.25, 0.60 ≦ y ≦ 0.85,0.
The composition range is 05 ≦ z ≦ 0.30, 0 ≦ m <1,0 <n ≦ 0.5, and x + y + z = 1.
この発明における組成分CaO・CeO2は,BaO−TiO2−Sm2O3
−Nd2O3系磁器材料に含有される組成分Sm2O3,Nd2O3と一
部置換することにより,Q値を増大させ，より高周波での
応用を可能にする。The composition CaO / CeO 2 in the present invention is BaO−TiO 2 −Sm 2 O 3
By substituting Sm 2 O 3 and Nd 2 O 3 in the composition contained in the —Nd 2 O 3 based porcelain material, the Q value is increased and application at higher frequencies becomes possible.
以下，この発明の実施例について説明する。 Examples of the present invention will be described below.
出発原料には，化学的に高純度のBaCO3,TiO2,Sm2O3,Nd2
O3,CaCO3,CeO2,Mn2O2を用いて表に示す組成の誘電体磁
器が得られるように調合，混合し，空気中1,100℃で２
時間仮焼した。次いで得られた仮焼物を粉砕し，成形圧
力700Kg/cm2で直径12mm,高さ15mmの円柱状にプレス成形
した。得られた成形体を，酸素雰囲気中，約1,300〜1,5
00℃に３〜５時間保持して，誘電体器を得た。The starting materials were chemically pure BaCO 3 , TiO 2 , Sm 2 O 3 and Nd 2
O 3, CaCO 3, CeO 2 , Mn 2 O 2 prepared as dielectric ceramic having the composition shown in Table is obtained using a mixed, 2 at 1,100 ° C. in air
I calcined for an hour. Then, the obtained calcined product was crushed and press-formed into a column having a diameter of 12 mm and a height of 15 mm at a forming pressure of 700 kg / cm 2 . The obtained molded body is put in an oxygen atmosphere for about 1,300 to 1,5
The temperature was maintained at 00 ° C for 3 to 5 hours to obtain a dielectric device.
この誘電体磁器に研削加工を施し,1MHzで比誘電率（ε
ｒ）と温度特性として比誘電率の温度係数（τｋ）を＋
25〜＋60℃で測定し，次いでマイクロストリップ型共振
器として9.5GHz帯でＱ値を測定した。その結果を表に表
わした。表中，※印はこの発明範囲のもので，それ以外
はすべてこの発明範囲内のものである。なお，試料番号
14,20,25,27はＱ値が小さいため，τｋの測定を行って
いない。This dielectric porcelain was ground and the relative permittivity (ε
r) and the temperature characteristic of the dielectric constant temperature coefficient (τk) as +
The measurement was performed at 25 to + 60 ° C, and then the Q value was measured in the 9.5 GHz band as a microstrip type resonator. The results are shown in the table. In the table, * marks are within the scope of the invention, and all other items are within the scope of the invention. The sample number
14,20,25,27 has a small Q value, so τk is not measured.
表における，試料番号4,5の比較,9,10,11の比較,15,16,
17,20の比較，および21,22,23,24の比較から明らかなよ
うに，成分分Nd2O3と成分CaO・CeOを適度に含有するこ
とによってＱ値を改善することができる。また，試料番
号9,10,11の比較,15,16,17の比較および16,18,19の比較
から成分CaO・CeO2の含有はτｋをプラス側に，成分Nd2
O3の含有はτｋをマイナス側にそれぞれ移行させること
がわかる。即ち,0ppm/℃を中心に任意の温度特性に調整
することができる。さらに試料6,7,8の比較および10,1
2,13,14の比較から副成分Mn2O3の３重量％以下の添加は
εｒを増加させる傾向にあることがわかる。さらにま
た，試料14,20,25,26,27の比較から以下のことがわか
る。組成分CaO・CeO3のモル比ｎが0.5より大きくなる
が，組成分BaOのモル比ｘが0.25より大きくなるか，あ
るいは組成分TiO2のモル比ｙが0.60より小さくなるとＱ
値が低下し，マイクロ波通信用誘電体磁器材料として不
適当になる。このＱ値の低下は副成分Mn2O3を３重量％
以上添加した場合にも生じる。また，組成分BaOのモル
比ｘが0.1より小さく組成分TiO2のモル比ｙが0.85より
大きくなるとτｋの絶対値が大きくなり，部品としての
応用が難しく工業材料として不適当になる。In the table, sample numbers 4,5 comparison, 9,10,11 comparison, 15,16,
As is clear from the comparison of 17,20 and the comparison of 21,22,23,24, the Q value can be improved by appropriately containing the components Nd 2 O 3 and the components CaO / CeO. From the comparison of sample numbers 9, 10, 11 and 15, 16, 17 and 16, 18, 19, the content of the components CaO and CeO 2 is τk on the positive side and the component Nd 2
It can be seen that the inclusion of O 3 shifts τk to the negative side. That is, it is possible to adjust to any temperature characteristic centering on 0 ppm / ° C. Further comparison of samples 6, 7, 8 and 10, 1
From the comparison of 2,13,14, it can be seen that the addition of 3% by weight or less of the accessory component Mn 2 O 3 tends to increase εr. Furthermore, the following can be seen from the comparison of samples 14, 20, 25, 26, and 27. When the molar ratio n of the composition component CaO · CeO 3 becomes larger than 0.5, but the molar ratio x of the composition component BaO becomes larger than 0.25 or the molar ratio y of the composition component TiO 2 becomes smaller than 0.60, Q
The value decreases, making it unsuitable as a dielectric ceramic material for microwave communication. This decrease in the Q value is due to the addition of Mn 2 O 3 by 3% by weight.
It also occurs when added above. When the molar ratio x of the composition component BaO is smaller than 0.1 and the molar ratio y of the composition component TiO 2 is larger than 0.85, the absolute value of τk becomes large, making it difficult to apply as a component and unsuitable as an industrial material.
図面はこの発明の誘電体磁器材料の主成分の組成範囲を
示した三元図であり，図中，点a,b,c,dを頂点とする四
角形の辺および内部はこの発明範囲を示しており，点e,
f,gはそれぞぞれ比較試料番号25,26,27に対応する。The drawing is a ternary diagram showing the composition range of the main components of the dielectric porcelain material of the present invention. In the figure, the sides of the quadrangle with points a, b, c, d as vertices and the inside indicate the scope of the invention. Point e,
f and g correspond to comparative sample numbers 25, 26 and 27, respectively.
なお，上記実施例では，出発原料にBaCO3,TiO2,Sm2O3,N
d2O3,CaCO3,CeO2,を用いたがBaO,Ba（OH）２・8H2O,Ba
（NO3）２などのBa含有化合物,TiCl4,Ti（SO4）2,Ti
〔Ｏ（CH2）3CH3〕４などのTi含有化合物,Sm（NO3）２
・6H2O,SmCl3・6H2OなどのSm含有化合物,Nd2（CO3）３
・8H2O,NdCl3・6H2O,Nd（NO3）３・xH2OなどのNd含有化
合物,CaCl2,Ca（OH）2,CaOCa（NO3）２などのCa含有化
合物,Ce（OH）4,Ce（NO3）4,Ce（CO3）２などのCe含有
化合物を所定の割合で調合し用いてもよい。要は，誘電
体磁器にした場合に上記組成として用いられればよいの
である。In the above example, the starting materials were BaCO 3 , TiO 2 , Sm 2 O 3 , and N.
d 2 O 3, CaCO 3, CeO 2, was used BaO, Ba (OH) 2 · 8H 2 O, Ba
Ba-containing compounds such as (NO 3 ) 2 , TiCl 4 , Ti (SO 4 ) 2 , Ti
Ti-containing compounds such as [O (CH 2 ) 3 CH 3 ] 4 , Sm (NO 3 ) 2
・ Sm-containing compounds such as 6H 2 O, SmCl 3・ 6H 2 O, Nd 2 (CO 3 ) 3
・ Nd-containing compounds such as 8H 2 O, NdCl 3・ 6H 2 O, Nd (NO 3 ) 3・ xH 2 O, Ca-containing compounds such as CaCl 2 , Ca (OH) 2 , CaOCa (NO 3 ) 2 , Ce Ce-containing compounds such as (OH) 4 , Ce (NO 3 ) 4 and Ce (CO 3 ) 2 may be mixed and used at a predetermined ratio. The point is that the above composition should be used when a dielectric ceramic is used.
以上，表からもわかるように，この発明によれば1,200
という大きいＱ値を示す組成の誘電体磁器材料が得られ
るとともに,CaO・CeO2を含有させることにより，従来例
のものより全般にＱ値が大きい方に移行する。また高い
比誘電率を示すとともに，比誘電率の温度係数も任意に
変えられるので，温度特性の調整もできる。さらに，こ
のCaO・CeO2は安価で安定供給が受けられるとともに，
焼成温度も30〜40゜低くても良いというメリットがあ
る。なお，この発明のものは特に1GHzまでのマイクロ波
通信部品の小型化にメリットがある。As described above, according to the present invention, as can be seen from the table, 1,200
A dielectric ceramic material having a composition showing a large Q value is obtained, and the inclusion of CaO.CeO 2 shifts the Q value to a larger value than that of the conventional example. In addition to exhibiting a high relative permittivity, the temperature coefficient of the relative permittivity can be arbitrarily changed, so that the temperature characteristic can be adjusted. Furthermore, this CaO / CeO 2 is cheap and can be stably supplied,
There is an advantage that the firing temperature may be lowered by 30 to 40 °. The present invention is particularly advantageous for downsizing microwave communication components up to 1 GHz.
以上のように，この発明によれば，一般式xBaO−yTiO2
−ｚ｛１−ｍ−ｎ）Sm2O3−mNd2O3−ｎ（CaO・CeO2）｝
で表わさ，モル比が0.10≦ｘ≦0.25,0.60≦ｙ≦0.85,0.
05≦ｚ≦0.30,0≦ｍ＜1,0＜ｎ≦0.5,x＋ｙ＋ｚ＝１の組
成範囲にすることにより、高い誘電率と大きいＱ値を持
つとともに温度係数τｋ等調整可能な安定した温度特性
を持ち，例えばマイクロ波通信機器用として優れた誘電
体磁器材料が得られる効果がある。As described above, according to the present invention, the general formula xBaO−yTiO 2
-Z {1-m-n) Sm 2 O 3 -mNd 2 O 3 -n (CaO · CeO 2)}
, The molar ratio is 0.10 ≦ x ≦ 0.25, 0.60 ≦ y ≦ 0.85,0.
05 ≦ z ≦ 0.30, 0 ≦ m <1,0 <n ≦ 0.5, x + y + z = 1 By setting the composition range, it has a high dielectric constant and a large Q value, and stable temperature characteristics such as temperature coefficient τk that can be adjusted. And has an effect of obtaining an excellent dielectric ceramic material for microwave communication equipment, for example.
図面はこの発明に係る主成分の組成範囲を示す三元図で
ある。図中，点a,b,c,dを頂点とする四角形の辺および
内部はこの発明範囲を示している。The drawings are ternary diagrams showing the composition ranges of the main components according to the present invention. In the figure, the sides and the inside of a quadrangle having points a, b, c, and d as vertices indicate the scope of the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 井戸 猛夫 兵庫県尼崎市塚口本町８丁目１番１号 三 菱電機株式会社材料研究所内 (56)参考文献 特開 昭57−21010（ＪＰ，Ａ) 特開 昭51−10814（ＪＰ，Ａ) 特開 昭59−230207（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeo Ido 8-1-1 Tsukaguchi Honcho, Amagasaki City, Hyogo Sanryo Electric Co., Ltd. Materials Research Laboratory (56) Reference JP-A-57-21010 (JP, A) JP-A-51-10814 (JP, A) JP-A-59-230207 (JP, A)
Claims (2)
m2O3−mNd2O3−ｎ（CaO・CeO2）｝で表わされ、モル比
が0.10≦ｘ≦0.25,0.60≦ｙ≦0.85,0.05≦ｚ≦0.30,0≦
ｍ＜1,0＜ｎ≦0.5,x＋ｙ＋ｚ＝１の組成範囲にある誘電
体磁器材料。1. A general formula xBaO-yTiO 2 -z {(1 -m-n) S
m 2 O 3 −mNd 2 O 3 −n (CaO · CeO 2 )}, and the molar ratio is 0.10 ≦ x ≦ 0.25, 0.60 ≦ y ≦ 0.85, 0.05 ≦ z ≦ 0.30,0 ≦
Dielectric ceramic material in the composition range of m <1,0 <n ≦ 0.5, x + y + z = 1.
れている特許請求の範囲第１項記載の誘電体磁器材料。2. The dielectric ceramic material according to claim 1, which contains Mn 2 O 3 in an amount of 3% by weight or less as an accessory component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62150530A JPH0731932B2 (en) | 1987-01-07 | 1987-06-17 | Dielectric porcelain material |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP146287 | 1987-01-07 | ||
| JP62-1462 | 1987-01-07 | ||
| JP62150530A JPH0731932B2 (en) | 1987-01-07 | 1987-06-17 | Dielectric porcelain material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63308805A JPS63308805A (en) | 1988-12-16 |
| JPH0731932B2 true JPH0731932B2 (en) | 1995-04-10 |
Family
ID=26334672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62150530A Expired - Lifetime JPH0731932B2 (en) | 1987-01-07 | 1987-06-17 | Dielectric porcelain material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0731932B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593804A (en) * | 1982-06-30 | 1984-01-10 | 株式会社小糸製作所 | Lens of lamp for vehicle |
| JPS5937527A (en) * | 1982-08-27 | 1984-03-01 | Hitachi Ltd | Liquid crystal display element |
| JPS5951096A (en) * | 1982-09-17 | 1984-03-24 | 株式会社東京タツノ | Outdoor data input-output device for oil station |
| JPS61173408A (en) * | 1985-01-28 | 1986-08-05 | 沖電気工業株式会社 | Dielectric ceramics composition for microwave |
-
1987
- 1987-06-17 JP JP62150530A patent/JPH0731932B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63308805A (en) | 1988-12-16 |
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