JP2617301B2 - Oxide magnetic material - Google Patents
Oxide magnetic materialInfo
- Publication number
- JP2617301B2 JP2617301B2 JP62000189A JP18987A JP2617301B2 JP 2617301 B2 JP2617301 B2 JP 2617301B2 JP 62000189 A JP62000189 A JP 62000189A JP 18987 A JP18987 A JP 18987A JP 2617301 B2 JP2617301 B2 JP 2617301B2
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- Japan
- Prior art keywords
- mol
- core
- coil
- magnetic material
- inductance
- 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
Links
- 239000000696 magnetic material Substances 0.000 title claims description 18
- 239000000454 talc Substances 0.000 claims description 15
- 229910052623 talc Inorganic materials 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 4
- 230000035699 permeability Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 13
- 238000007792 addition Methods 0.000 description 8
- 239000000654 additive Substances 0.000 description 8
- 230000000996 additive effect Effects 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910017816 Cu—Co Inorganic materials 0.000 description 1
- 229910018054 Ni-Cu Inorganic materials 0.000 description 1
- 229910018481 Ni—Cu Inorganic materials 0.000 description 1
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- 229910007564 Zn—Co Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Magnetic Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Description
【発明の詳細な説明】 （技術分野） 本発明は酸化物磁性材料に関し、特に200MHz以上の高
周波帯で用いられる電子機器の帯域フイルター等のイン
ダクタンス素子用磁心となる酸化物磁性材料に関する。Description: TECHNICAL FIELD The present invention relates to an oxide magnetic material, and more particularly, to an oxide magnetic material to be a magnetic core for an inductance element such as a band filter of an electronic device used in a high frequency band of 200 MHz or more.
（従来技術） 衛星放送受信機、パーソナル無線、コードレス電話な
どの新方式の電子機器では、200MHz以上の高周波帯域で
用いられる帯域フイルター等のインダクタンス素子に対
する需要が増大している。このようなインダクタンス素
子では高いＱが要求されるため、空心コイル、及びアル
ミニウム等の金属コアを磁心としたコイルが主として用
いられている。また一部酸化物磁性材料であるフエライ
トコアを磁心としたコイルもある。しかし、これらのイ
ンダクタンス素子には一長一短があり、未だ満足なもの
ではない。(Prior Art) In new-type electronic devices such as a satellite broadcast receiver, a personal radio, and a cordless telephone, demand for an inductance element such as a band filter used in a high-frequency band of 200 MHz or more is increasing. Since such an inductance element requires a high Q, an air-core coil and a coil having a metal core such as aluminum as a magnetic core are mainly used. There is also a coil having a ferrite core, which is a partially oxide magnetic material, as a magnetic core. However, these inductance elements have advantages and disadvantages and are not yet satisfactory.
（従来技術の問題点） 上記のうち、空心コイルはＱが高い長所を有するが、
磁心がない為、インダクタンス等の特性の調整がとりに
くく、また振動等の外力によつて変動し易い。インダク
タンスを増大するには巻線の巻数を増大する必要がある
が、素子が大型化する欠点がある。(Problems of the prior art) Among the above, the air-core coil has an advantage of high Q,
Since there is no magnetic core, it is difficult to adjust characteristics such as inductance, and it is liable to fluctuate due to external force such as vibration. To increase the inductance, it is necessary to increase the number of turns of the winding, but there is a disadvantage that the element becomes large.
一方、金属コア入りコイルの場合にはＱが大きいだけ
でなくインダクタンスを可変にできるが、インダクタン
スはコアの挿入によつてその値が減少し、空心コイルよ
りも小さいインダクタンス値となる欠点がある。またコ
アの固有抵抗が低いので、空隙を介してボビンに巻線を
施す必要があるためＱは空心コイルの場合よりも小さ
い。On the other hand, in the case of a coil with a metal core, not only the Q is large but also the inductance can be made variable. However, the inductance has a disadvantage in that its value is reduced by the insertion of the core and becomes smaller than that of the air-core coil. Further, since the specific resistance of the core is low, it is necessary to wind the bobbin through the air gap, so that Q is smaller than that of the air-core coil.
他方、フエライトコア入りコイルは、コアの透磁率が
高く、コイルにコアを挿入するときインダクタンスが増
大し可変が取り易い。またコアの固有抵抗が大きいため
直巻線ができる。このためインダクタンスが取り易く小
型のコイルを構成できる。しかし、この型のコイルはＱ
が低い欠点を有する。On the other hand, the coil with a ferrite core has a high magnetic permeability of the core, and the inductance increases when the core is inserted into the coil, so that the coil can be easily changed. In addition, since the specific resistance of the core is large, a straight winding can be formed. For this reason, a small-sized coil can be formed with easy inductance. However, this type of coil
Have low disadvantages.
上記の検討から分るように、空心コイルや金属コア入
りコイルの改良の余地はあまりない。しかし、フエライ
トコア入りコイルの場合には、若しも高Ｑ化が実現でき
るならば、非常に有利になる。As can be seen from the above discussion, there is little room for improvement in air-core coils or coils with metal cores. However, in the case of a coil containing a ferrite core, it is very advantageous if a high Q can be realized.
（発明の目的） 従つて、本発明の目的は、高周波において高いＱを有
する酸化物磁性材料を提供することにあり、特に高抵抗
による直巻線が可能で、コイル挿入時にインダクタンス
を増大でき、Ｑが大きいインダクタンス素子を構成でき
る酸化物磁性材料を提供することにある。(Object of the Invention) Accordingly, an object of the present invention is to provide an oxide magnetic material having a high Q at a high frequency. In particular, a direct winding with high resistance is possible, and an inductance can be increased when a coil is inserted. An object of the present invention is to provide an oxide magnetic material that can form an inductance element having a large Q.
（発明の構成及び効果の概要） 本発明は、酸化物で表わして、Fe2O3５〜40mol％、Cu
O 1〜6mol％及びNiO 54〜94mol％より成る基材に，前記
基材を基準にしてCoO 0.55〜1.4wt％、PbO 1.5〜8wt％
及びタルク0.5〜9wt％を添加したことを特徴とする酸化
物磁性材料である。(Configuration and Overview of the Effect of the Invention) The present invention, expressed as the oxide, Fe 2 O 3 5~40mol%, Cu
On a substrate composed of 1 to 6 mol% of O and 54 to 94 mol% of NiO, 0.55 to 1.4 wt% of CoO and 1.5 to 8 wt% of PbO based on the substrate.
And 0.5 to 9% by weight of talc.
特にFe2O3量を大幅に化学量論組成より少なくするこ
とにより高いＱが得られたことがポイントとなる。In particular, the point is that a high Q was obtained by making the amount of Fe 2 O 3 significantly smaller than the stoichiometric composition.
本発明の酸化物磁性材料は、従来の技術では実現でき
なかつた200MHz以上の高周波帯で高いＱを有し、インダ
クタンスを増大でき、小型のインダクタンス素子を構成
するためのコアとして有利に使用することができる。The oxide magnetic material of the present invention has a high Q in a high frequency band of 200 MHz or more, which cannot be realized by the conventional technology, can increase inductance, and is advantageously used as a core for forming a small inductance element. Can be.
（発明の構成の具体的説明） 200MHz以上で用いる磁性コアにおいてはインダクタン
ス調整のために透磁率が必要である。しかしインダクタ
ンスがコアの挿入によつて或る値まで増大できれば良い
から透磁率が大きい必要はなく或る程度の大きさが確保
できれば良い。高周波用の磁性コアとしては従来Ni−Zn
−Co系フエライト、Ni−Zn−Cu−Co系などが使用されて
おり、これらは高い透磁率を有するが、Ｑが小さいため
帯域フイルター等を構成した場合に挿入損失が増大し、
使用が困難であつた。本発明者はNi−Cu系の酸化物磁性
材料において、そのFe2O3成分をフエライトの化学量論
量（MO・Fe2O3、ただしＭはNi及びCu）である50mol％よ
りも大幅に少ない５〜40mol％の量で用いることを第１
の特徴とする。これにより、透磁率は低下するが、Ｑが
大幅に向上することが分つた。一方、CuOについては１
〜6mol％の量で用いると、基材磁性酸化物をNi単独で構
成したときよりも、透磁率及びＱを大きくできる。(Specific Description of the Configuration of the Invention) A magnetic core used at 200 MHz or higher needs a magnetic permeability for adjusting inductance. However, it is only necessary that the inductance can be increased to a certain value by inserting the core, so that the magnetic permeability does not need to be large and it is sufficient if a certain size can be secured. Conventional magnetic cores for high frequency use Ni-Zn
-Co-based ferrite, Ni-Zn-Cu-Co-based and the like are used, and these have a high magnetic permeability, but the insertion loss increases when a band filter or the like is configured because Q is small,
It was difficult to use. The present inventors have found that, in a Ni—Cu-based oxide magnetic material, the Fe 2 O 3 component is much larger than the stoichiometric amount of ferrite (MO.Fe 2 O 3 , where M is Ni and Cu) of 50 mol%. The first is to use 5 to 40 mol%, which is extremely small.
The feature of. As a result, it was found that the magnetic permeability was reduced, but the Q was significantly improved. On the other hand, CuO is 1
When used in an amount of up to 6 mol%, the magnetic permeability and Q can be made larger than when the base magnetic oxide is composed of Ni alone.
次に、本発明の重要な他の構成成分はCoO、PbO、及び
タルクである。これらを添加すると、Ｑはかなり高くす
ることができる。添加成分がCoOのとき、上記基材を基
準として0.05〜1.4wt％の添加でＱは大きく向上する。
添加物がPbOのとき、1.5〜8wt％の添加量でＱは向上
し、透磁率も向上する。添加物がタルクのとき、0.5〜9
wt％の添加量でＱは向上する。Next, other important components of the present invention are CoO, PbO, and talc. With these additions, Q can be significantly higher. When the added component is CoO, Q is greatly improved by the addition of 0.05 to 1.4% by weight based on the base material.
When the additive is PbO, Q is improved and the magnetic permeability is improved with the addition amount of 1.5 to 8 wt%. 0.5 to 9 when the additive is talc
Q improves with the addition amount of wt%.
ところで、PbO、タルクを添加した酸化物磁性材料は
公知であるが、その目的は機械的特性の改善であり、20
0MHz以上でのＱの改善を意図したものではなかつた。一
方、CoO添加によるＱの改善は公知であるが、200MHz以
上の高周波でのＱは低いものであつた。By the way, oxide magnetic materials to which PbO and talc are added are known, but the purpose is to improve mechanical properties, and
It was not intended to improve Q above 0MHz. On the other hand, although the improvement of Q by addition of CoO is known, the Q at a high frequency of 200 MHz or higher was low.
またFe2O3量については透磁率が取り易い化学量論組
成付近を用いているのが一般的（公知）である。本発明
においては化学量論量よりもはるかに少ない５〜40mol
％のFe2O3を含有する基材に添加物を組み合せて用いた
ために、200MHz以上の高周波帯で使用されるインダクタ
ンス素子の挿入用コアとして用いたとき、極めて高いＱ
の値と、或る程度の透磁率を確保することができる点
で、公知の技術と大きな相違がある。As for the amount of Fe 2 O 3, it is general (known) to use a stoichiometric composition around which magnetic permeability can be easily obtained. In the present invention, 5 to 40 mol, which is much smaller than the stoichiometric amount
% Of Fe 2 O 3, which has an extremely high Q when used as an insertion core for an inductance element used in a high frequency band of 200 MHz or more because the additive is used in combination with a base material containing Fe 2 O 3.
And a point that a certain degree of magnetic permeability can be ensured.
次に、本発明の実施例を詳しく述べる。 Next, embodiments of the present invention will be described in detail.
実施例１（Fe2O3,NiO置換の効果について） 従来慣用されている方法によりCuO、NiO、Fe2O3、Co
O、PoO及びタルクを混合し、仮焼成し、粉砕み、トロイ
ダルコアを加圧成型し、950〜1100℃で２時間焼成し、
次の組成の焼結酸化物磁性材を得た。Example 1 (Effect of substitution of Fe 2 O 3 and NiO) CuO, NiO, Fe 2 O 3 , Co
O, PoO and talc are mixed, calcined, pulverized, and the toroidal core is molded under pressure, and calcined at 950 to 1100 ° C for 2 hours.
A sintered oxide magnetic material having the following composition was obtained.
基材成分 Fe2O3 2.5〜55mol％ CuO 3mol％ NiO 残部 添加成分（基材成分全量を100wt％として） CoO 1.0wt％ PbO 2.5wt％ タルク 2.0wt％ 得られたトロイダルコアに0.6φ−UDTC-1Tsを巻線
後、高周波Ｑメーターで250MHzでＱを測定した。結果を
第１図に示した。Substrate component Fe 2 O 3 2.5 to 55 mol% CuO 3 mol% NiO balance Additional components (assuming the total amount of the substrate component is 100 wt%) CoO 1.0 wt% PbO 2.5 wt% Talc 2.0 wt% 0.6φ-UDTC After winding -1Ts, Q was measured at 250 MHz with a high frequency Q meter. The results are shown in FIG.
なお、この測定条件で空心コイルＱ値は150であつ
た。また一般に実用化されている金属コアはQapp＝コア
入りコイルのQ/空心コイルのＱ≒0.933であり、Ｑ値は1
40程度となる。The air core coil Q value was 150 under these measurement conditions. The metal core that is generally put into practical use is Qapp = Q of cored coil / Q of air-core coil ≒ 0.933, and the Q value is 1
It will be around 40.
第１図を検討すると、Ｑが140以上となる組成はFe2O3
が約42.5mol％以下であり、また初透磁率μiacはこの組
成範囲で２〜６となる。なお、組成が化学量論量である
50mol％の近傍ではＱは非常に低くなることが分る。よ
つて、Fe2O3が約５〜40mol％でNiOが92〜57mol％（CuO3
mol％のとき）で用いればＱが140以上でμiacもある程
度の大きさが確保される。なおCuOとの関係でNiOは54〜
94mol％の範囲で使用しうることが後述の例やその他の
実験で確認された。Considering FIG. 1, the composition where Q is 140 or more is Fe 2 O 3
Is about 42.5 mol% or less, and the initial magnetic permeability μiac is 2 to 6 in this composition range. The composition is stoichiometric
It turns out that Q becomes very low in the vicinity of 50 mol%. Therefore, Fe 2 O 3 is about 5 to 40 mol% and NiO is 92 to 57 mol% (CuO 3
(when mol%), Q is 140 or more and μiac is also secured to some extent. NiO is 54 ~ in relation to CuO.
The use in the range of 94 mol% was confirmed in the examples described below and other experiments.
実施例２（CuO-NiO置換の効果について） 次の組成の酸化物磁性材料より成るトロイダルコアを
製造した。製造方法及び測定方法は実施例１と同様であ
つた。Example 2 (Effect of CuO-NiO substitution) A toroidal core made of an oxide magnetic material having the following composition was manufactured. The production method and measurement method were the same as in Example 1.
基本成分 Fe2O3 40mol％ CuO ０〜8mol％ NiO 残部 添加成分（基本成分を100wt％として） CoO 1.0wt％ PbO 2.5wt％ タルク 1.0wt％ 結果は第２図の通りであつた。Fe2O340mol％は実施例
１で得られた上限値であり、CuO含有量の変動によりＱ
は実施例１の場合よりも低下するが、140以上の値はCuO
1〜6mol％の範囲で確保できることが分る。CuOの変動に
応じてＱを140以上にするにはNiOは54〜59mol％の含有
量を必要とすることが分る。Basic component Fe 2 O 3 40 mol% CuO 0 to 8 mol% NiO balance Additional components (assuming the basic component is 100 wt%) CoO 1.0 wt% PbO 2.5 wt% Talc 1.0 wt% The results are shown in FIG. Fe 2 O 3 40 mol% is the upper limit value obtained in Example 1, and Q
Is lower than that of Example 1, but the value of 140 or more is CuO
It can be seen that it can be secured in the range of 1 to 6 mol%. It can be seen that NiO needs a content of 54 to 59 mol% to make Q 140 or more according to the variation of CuO.
実施例３（CoO添加量の効果について） 実施例１に従つて下記の酸化物磁性材料を製造した。Example 3 (Effect of CoO addition amount) According to Example 1, the following oxide magnetic material was produced.
基材組成 Fe2O3 40mol％ CuO 3mol％ NiO 57mol％ 添加成分（基材の全量基準） PbO 2.5wt％ タルク 1.0wt％ CoO 0.2〜1.4wt％ 測定結果を第３図に示した。140以上のＱが得られるC
oOの含有量は0.55以上であり、効果が飽和する1.4mol％
を以つて上限とした。Substrate composition Fe 2 O 3 40 mol% CuO 3 mol% NiO 57 mol% Additive component (based on the total amount of the substrate) PbO 2.5 wt% Talc 1.0 wt% CoO 0.2-1.4 wt% The measurement results are shown in FIG. C that gives Q of 140 or more
The content of oO is 0.55 or more, and the effect is saturated at 1.4 mol%
Was set as the upper limit.
実施例４（PbO添加の効果） 実施例１と同様にして次の酸化物磁性材料を製造し
た。Example 4 (Effect of PbO addition) The following oxide magnetic material was manufactured in the same manner as in Example 1.
基材組成 Fe2O3 40mol％ CuO 3mol％ NiO 57mol％ 添加成分 CoO 1.0wt％ タルク 1.0wt％ PbO ０〜8wt％ 測定結果を第４図に示した。これにより、140以上のＱ
はPbOが1.5〜8wt％で確保できることが分る。Substrate composition Fe 2 O 3 40 mol% CuO 3 mol% NiO 57 mol% Additive component CoO 1.0 wt% Talc 1.0 wt% PbO 0-8 wt% The measurement results are shown in FIG. This gives a Q over 140
It can be seen that PbO can be secured at 1.5 to 8 wt%.
実施例５（タルク添加の効果） 実施例１と同様にして、次の組成を有する酸化物磁性
材料を製造した。Example 5 (Effect of talc addition) An oxide magnetic material having the following composition was produced in the same manner as in Example 1.
基材組成 Fe2O3 40mol％ CuO 3mol％ NiO 57mol％ 添加成分 CoO 1.0wt％ PbO 2.5wt％ タルク ０〜10wt％ 測定結果を第５図に示した。これによると140以上のＱ
はタルクが1.5〜8wt％のときに得られることが分る。μ
iacは４以上が得られている。Substrate composition Fe 2 O 3 40 mol% CuO 3 mol% NiO 57 mol% Additive component CoO 1.0 wt% PbO 2.5 wt% Talc 0-10 wt% The measurement results are shown in FIG. According to this, more than 140 Q
Is obtained when the talc is 1.5 to 8 wt%. μ
iac has obtained 4 or more.
実施例６（実用試験） 実施例１と同様にして次の酸化物磁性材料を製造し
た。Example 6 (Practical test) The following oxide magnetic material was produced in the same manner as in Example 1.
Fe2O3 25mol％ CuO 3mol％ NiO 72mol％ 添加成分 CoO 1.0wt％ PbO 2.5wt％ タルク 1.0wt％ この材料のＱは148（250MHt）であり、透磁率μiacは3.
6であつた。Fe 2 O 3 25 mol% CuO 3 mol% NiO 72 mol% Additive component CoO 1.0 wt% PbO 2.5 wt% Talc 1.0 wt% The Q of this material is 148 (250 MHz) and the permeability μiac is 3.
I got 6.
これを従来のNi−Cu−Zn−Co系フエライトでＱ＝10
3、μiac8が得られるものから製作したネジコア（直径
3.2mm、長さ3mm）と、アルミニウムコア（同じ寸法）
と、本発明品コア（同じ寸法）とを用いた巻数1Tsコイ
ルを製作し、これらのＱ及び比透磁率μapp を250MHzで高周波Ｑメータを用いて測定した。その結果
を表１に示した。This is Q = 10 with conventional Ni-Cu-Zn-Co ferrite.
3. Screw core (diameter) manufactured from the one that can obtain μiac8
3.2mm, length 3mm) and aluminum core (same dimensions)
And a core of the present invention (same dimensions) were used to produce a 1Ts coil, and their Q and relative permeability μapp Was measured at 250 MHz using a high frequency Q meter. The results are shown in Table 1.
表１から分るように、空心コイルにアルミニウムコア
を挿入するとインダクタンスが減少する。金属コアは抵
抗が低いためコイルの直巻きができず、ボビンに挿入す
るか、樹脂等の表面絶縁処理をしないと250MHzでの測定
が不可能であつた。一方、従来品のフエライトコアはμ
appが1.04と充分に大きいが、Ｑが30％も低く、実用上
問題が生じる。 As can be seen from Table 1, the inductance decreases when an aluminum core is inserted into the air-core coil. Since the metal core had low resistance, the coil could not be wound directly, and it was impossible to measure at 250 MHz without inserting it into a bobbin or performing surface insulation treatment with resin or the like. On the other hand, the conventional ferrite core
The app is sufficiently large at 1.04, but the Q is as low as 30%, causing a practical problem.
本発明の酸化物磁性材料は、Ｑは148と実用品と同じ
レベルであり、μappは1.03と充分なインダクタンスが
得られ、可変コイルとしての応用が充分に期待できる。
さらに、固有抵抗は106Ω−cmが得られており、コアに
直巻線をしても特性の変化がなく安定な高Ｑコイルが実
現できることが判つた。In the oxide magnetic material of the present invention, Q is 148, which is the same level as that of a practical product, μapp is 1.03, and a sufficient inductance is obtained, and the application as a variable coil can be fully expected.
Furthermore, it was found that a specific resistance of 10 6 Ω-cm was obtained, and a stable high-Q coil with no change in characteristics could be realized even if the core was directly wound.
（作用効果のまとめ） 以上のように、本発明による酸化物磁性材料は、化学
量論量のFe2O3よりも大幅に少ないFe2O3を含有し、且つ
所定の添加成分を含有することにより、高抵抗、高Ｑ及
びインダクタンス可変が取り易い小型インダクタンス素
子を構成するコアとしてすぐれた特性を発揮するもので
ある。As (action Summary of effects) above, an oxide magnetic material according to the present invention contains Fe 2 O 3 significantly less than the Fe 2 O 3 in a stoichiometric amount, and containing a predetermined additive components Thus, the core exhibits excellent characteristics as a core constituting a small inductance element which can easily have high resistance, high Q and variable inductance.
第１図はFe2O3の含有量がＱ及び透磁率に及ぼす影響を
示すグラフ、第２図はCuO含有量がＱ及び透磁率に及ぼ
す影響を示すグラフ、第３図はCoOの含有量がＱ及び透
磁率に及ぼす影響を示すグラフ、第４図はPbOの含有量
がＱ及び透磁率に及ぼす影響を示すグラフ、及び第５図
はタルクの含有量がＱ及び透磁率に及ぼす影響を示すグ
ラフである。FIG. 1 is a graph showing the effect of the Fe 2 O 3 content on Q and permeability, FIG. 2 is a graph showing the effect of CuO content on Q and permeability, and FIG. 3 is the content of CoO. Is a graph showing the effect of PbO content on Q and magnetic permeability, and FIG. 4 is a graph showing the effect of PbO content on Q and magnetic permeability. FIG. 5 is a graph showing the effect of talc content on Q and magnetic permeability. It is a graph shown.
Claims (1)
残部より成る基材組成に、添加成分として前記基材全量
を基準にしてCoO 0.55〜1.4wt％、PbO 1.5〜8wt％、及
びタルク0.5〜9wt％を含有する燒結体より成り、高周波
帯で使用される酸化物磁性材料。(1) Fe 2 O 3 5 to 40 mol%, CuO 1 to 6 mol% and NiO
The sintered body contains 0.55 to 1.4% by weight of CoO, 1.5 to 8% by weight of PbO, and 0.5 to 9% by weight of talc, based on the total amount of the base material, and is used in a high frequency band. Oxide magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62000189A JP2617301B2 (en) | 1987-01-06 | 1987-01-06 | Oxide magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62000189A JP2617301B2 (en) | 1987-01-06 | 1987-01-06 | Oxide magnetic material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63169005A JPS63169005A (en) | 1988-07-13 |
| JP2617301B2 true JP2617301B2 (en) | 1997-06-04 |
Family
ID=11467045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62000189A Expired - Lifetime JP2617301B2 (en) | 1987-01-06 | 1987-01-06 | Oxide magnetic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2617301B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3839546B2 (en) * | 1997-04-01 | 2006-11-01 | Ｔｄｋ株式会社 | Oxide magnetic material and inductance element |
| EP1666422B1 (en) | 2000-08-21 | 2008-07-02 | TDK Corporation | Ferrite material |
-
1987
- 1987-01-06 JP JP62000189A patent/JP2617301B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63169005A (en) | 1988-07-13 |
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