JP3170179B2 - Oxide magnetic material and method for producing the same - Google Patents
Oxide magnetic material and method for producing the sameInfo
- Publication number
- JP3170179B2 JP3170179B2 JP14644595A JP14644595A JP3170179B2 JP 3170179 B2 JP3170179 B2 JP 3170179B2 JP 14644595 A JP14644595 A JP 14644595A JP 14644595 A JP14644595 A JP 14644595A JP 3170179 B2 JP3170179 B2 JP 3170179B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic material
- oxide magnetic
- mol
- pbo
- coo
- 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 - Fee Related
Links
- 239000000696 magnetic material Substances 0.000 title claims description 36
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 9
- 238000010304 firing Methods 0.000 claims description 6
- 239000000454 talc Substances 0.000 description 10
- 229910052623 talc Inorganic materials 0.000 description 10
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 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
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Compounds Of Iron (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は酸化物磁性材料および
その製造方法に関するものであり、例えば、需要が高水
準にあるページャー（ポケベル）等のような、２００〜
５００ＭＨｚの高周波帯で使用される電子機器に使用さ
れる、アンテナコイルやインダクタンス素子のための磁
心の構成に好適な酸化物磁性材料およびその製造方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oxide magnetic material and a method for producing the same.
The present invention relates to an oxide magnetic material suitable for a magnetic core for an antenna coil and an inductance element used in an electronic device used in a high frequency band of 500 MHz and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】この種の磁心を構成するための酸化物磁
性材料は、例えば特開昭６３−１６９００５号公報に開
示されているように、２００ＭＨｚ以上の高周波帯で用
いられる電子機器の帯域フィルター等のインダクタンス
素子用磁心に使われている。2. Description of the Related Art An oxide magnetic material for forming a magnetic core of this type is disclosed in, for example, Japanese Patent Application Laid-Open No. 63-169005, which is a bandpass filter for electronic equipment used in a high frequency band of 200 MHz or more. Etc. are used for magnetic cores for inductance elements.
【０００３】前記のページャーのためのアンテナコイル
としては、通常はループアンテナ（空心コイル）が用い
られている。ところが、このようなループアンテナはＱ
が高い長所はあるが、インダクタンス等の特性を調整す
ることが困難であり、また、振動等の外力のために変動
しやすいという短所がある。更に、インダクタンスを増
大させるためには巻線の巻回数を増大させる必要がある
が、そのため全体として大形化するという欠点もある。As an antenna coil for the above-mentioned pager, a loop antenna (air-core coil) is usually used. However, such a loop antenna has Q
However, there is an advantage that it is difficult to adjust characteristics such as inductance, and that it tends to fluctuate due to an external force such as vibration. Further, in order to increase the inductance, it is necessary to increase the number of turns of the winding, but there is a disadvantage that the size is increased as a whole.
【０００４】これに対して、前記特開昭６３−１６９０
０５号公報において開示されているような酸化物磁性材
料からなる磁心入りのコイルにおいては、インダクタン
スの調整が容易であり、小形化に適当であるという利点
はあるが、Ｑが低いという欠点がある。前記公開公報に
おける酸化物磁性材料の２８０ＭＨｚでのＱ値は１７０
以下であるが、これを含めて、２８０ＭＨｚにおける幾
つかのＱ値を測定したところ、図６の表１に示すような
結果が得られた。このように、従来の酸化物磁性材料は
Ｑ値が低く、アンテナコイルとして用いるのには不適当
である。On the other hand, Japanese Patent Application Laid-Open No. 63-1690 describes
A coil with a magnetic core made of an oxide magnetic material as disclosed in Japanese Patent Publication No. 05 has an advantage that inductance can be easily adjusted and is suitable for miniaturization, but has a disadvantage that Q is low. . The Q value of the oxide magnetic material at 280 MHz in the publication is 170
As described below, when some Q values were measured at 280 MHz including this, the results as shown in Table 1 of FIG. 6 were obtained. As described above, the conventional oxide magnetic material has a low Q value and is not suitable for use as an antenna coil.
【０００５】[0005]
【発明が解決しようとする課題】前記のように、従来、
ページャーのような電子機器においては普通はループア
ンテナが用いられているが、これにはＱは高いという利
点はあるけれども全体として大形化する傾向があり、前
記公開公報で開示された酸化物磁性材料からなる磁心入
りのコイルを用いれば、小形化には好適であるがＱが低
いという課題がある。As described above, conventionally,
In electronic devices such as pagers, a loop antenna is usually used, but this has the advantage that Q is high, but tends to be large as a whole. If a coil with a magnetic core made of a material is used, it is suitable for miniaturization, but there is a problem that Q is low.
【０００６】この発明はこのような課題を解決すること
を目的とするものであって、後者のような酸化物磁性材
料からなる磁心について、より高いＱを得ることができ
る酸化物磁性材料およびその製造方法を提供することを
目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and an oxide magnetic material capable of obtaining a higher Q with respect to a magnetic core made of the oxide magnetic material as described above, It is intended to provide a manufacturing method.
【０００７】[0007]
【課題を解決するための手段】この発明は上記の目的を
果たすためになされたものであり、請求項１におけるこ
の発明に係る酸化物磁性材料は、高周波帯で使用される
コイルの磁心のための酸化物磁性材料であって、基材は
主成分の組成をＦｅ2Ｏ3：１５〜３０ｍｏｌ％，Ｃｕ
Ｏ：６ｍｏｌ％を超え１２ｍｏｌ％以下，及びＮｉＯ：
５８〜７９ｍｏｌ％とし、前記基材の全量を基準（１０
０ｗｔ％）として更に、ＰｂＯ：１．０〜５．０ｗｔ
％，ＳｉＯ2：０．５〜３．７ｗｔ％，及びＣｏＯ：
０．７〜２．５ｗｔ％を添加成分として含有することを
特徴とするものである。SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and the oxide magnetic material according to the present invention according to claim 1 is suitable for a magnetic core of a coil used in a high frequency band. an oxide magnetic material, the substrate
The composition of the main component is Fe 2 O 3 : 15 to 30 mol%, Cu
O: more than 6 mol% and 12 mol% or less, and NiO:
58 to 79 mol% , based on the total amount of the base material (10
PbO: 1.0 to 5.0 wt%
%, SiO 2 : 0.5 to 3.7 wt%, and CoO:
It is characterized by containing 0.7 to 2.5 wt% as an additional component.
【０００８】請求項２におけるこの発明に係る酸化物磁
性材料の製造方法は、高周波帯で使用されるコイルの磁
心のための酸化物磁性材料の製造方法であって、主成分
の組成がＦｅ2Ｏ3：１５〜３０ｍｏｌ％，ＣｕＯ：６ｍ
ｏｌ％を超え１２ｍｏｌ％以下，及びＮｉＯ：５８〜７
９ｍｏｌ％からなる基材に、前記基材の全量を基準（１
００ｗｔ％）として更に、ＰｂＯ：１．０〜５．０ｗｔ
％，Ｔａｌｃ：１．０〜５．５ｗｔ％，及びＣｏＯ：
０．７〜２．５ｗｔ％を添加して焼成することを特徴と
するものである。[0008] method of manufacturing an oxide magnetic material according to the invention in claim 2 is the method for producing a magnetic oxide for magnetic core of a coil used in a high frequency band, the main component
Is Fe 2 O 3 : 15 to 30 mol%, CuO: 6 m
ol% to 12 mol% or less, and NiO: 58 to 7
The base material composed of 9 mol% is based on the total amount of the base material (1
PbO: 1.0 to 5.0 wt%
%, Talc: 1.0 to 5.5 wt%, and CoO:
It is characterized by adding 0.7 to 2.5 wt% and firing.
【０００９】請求項３におけるこの発明に係わるアンテ
ナコイルは、請求項１に記載の酸化物磁性材料からなる
磁心を用いたことを特徴とするものである。According to a third aspect of the present invention, there is provided an antenna coil using a magnetic core made of the oxide magnetic material according to the first aspect.
【００１０】請求項４におけるこの発明に係わるインダ
クタンス素子は、請求項１に記載の酸化物磁性材料から
なる磁心を用いたことを特徴とするものである。According to a fourth aspect of the present invention, there is provided an inductance element using a magnetic core made of the oxide magnetic material according to the first aspect.
【００１１】この発明によれば、前記特開昭６３−１６
９００５号公報に記載される発明では得られなかった２
５０以上の高いＱ値が得られる。 According to the present invention, the above-mentioned JP-A-63-16
2 which could not be obtained by the invention described in Japanese Patent No. 9005
A high Q value of 50 or more is obtained.
【００１２】[0012]
【作用】請求項１におけるこの発明に係る酸化物磁性材
料は、請求項２の酸化物磁性材料の製造方法に基づいて
製造されるものであるが、請求項２において添加原料と
してＳｉＯ 2 に代えてＴａｌｃを用いるのはコストの低
減のためである。ここに、ＴａｌｃはＭｇ 3 （Ｓｉ
4 Ｏ 10 ）（ＯＨ） 2 からなるから、焼成後に若干のＭｇＯ
が残留するが、特性には殆ど影響がなく、請求項１およ
び請求項２のいずれの酸化物磁性材料によっても、２０
０〜５００ＭＨｚの周波数帯で高いＱが得られる。According to the first aspect of the present invention,PertainOxide magnetic material
The material is based on the method for producing an oxide magnetic material of claim 2.
It is to be manufactured,
do itSiO Two Using Talc instead of
It is for reduction. Where Talc isMg Three (Si
Four O Ten ) (OH) Two After firing, some MgO
Remain, but have little effect on the characteristics.
20. The oxide magnetic material according to claim 2,
A high Q is obtained in a frequency band of 0 to 500 MHz.
【００１３】請求項３および４はそれぞれにアンテナコ
イルおよびインダクタンス素子に係わる発明であるが、
請求項１に記載の酸化物磁性材料からなる磁心を用いて
いるために、高周波数帯において高いＱを実現できる。Claims 3 and 4 are inventions relating to an antenna coil and an inductance element, respectively.
Since the magnetic core made of the oxide magnetic material according to claim 1 is used, a high Q can be realized in a high frequency band.
【００１４】[0014]
【実施例】［実施例１］ 従来慣用の方法により、後述［Ａ］の基材および添加成
分について、「混合→仮焼成→粉砕→（棒状コアのよう
な）所要形状への加圧成型→（９００〜１０００℃のよ
うな）所定の温度で（２時間程度の）所要時間の焼成」
を行った。[Example 1] A base material and an additive component [A] to be described later were prepared by a conventional method.
For the minutes , “mixing → temporary firing → pulverization → pressure molding into a required shape (such as a rod-shaped core) → baking for a required time (about 2 hours) at a predetermined temperature (such as 900 to 1000 ° C.)”
Was done.
【００１５】［Ａ］：基材組成として；Ｆｅ 2 Ｏ 3 ：１５
〜３０ｍｏｌ％，ＣｕＯ： ６ｍｏｌ％を超え１２ｍｏ
ｌ％以下，ＮｉＯ：５８〜７９ｍｏｌ％，を含んでお
り、（前記基材の全量を基準（１００ｗｔ％）としたと
きの）添加成分として：ＰｂＯ：３．０ｗｔ％，ＳｉＯ
2 ：１．７ｗｔ％，ＣｏＯ：１．０ｗｔ％，を含んでい
る。その結果として得られた酸化物磁性材料からなる棒
状コア（２１ｍｍ×９ｍｍ×５．５ｍｍ）に対して、す
ずメッキの軟銅箔（１．３ｍｍ×０．２５ｍｍ）を２Ｔ
ｓだけ巻線してから、インピーダンス・アナライザーを
用いて２８０ＭＨｚにおけるＱ値を測定したところ、図
１および図５の表２に示すような結果が得られた。この
ような高いＱ値は前記特開昭６３−１６９００５号公報
では確認されていない。 [A]: As a base material composition; Fe 2 O 3 : 15
３０30 mol %, CuO: more than 6 mol% and 12 mo
1% or less , NiO: 58 to 79 mol%, and as additional components (based on the total amount of the base material (100 wt%)): PbO: 3.0 wt%, SiO
2 : 1.7 wt% and CoO: 1.0 wt% . The resulting rod-shaped core (21 mm × 9 mm × 5.5 mm) made of an oxide magnetic material was plated with tin-plated soft copper foil (1.3 mm × 0.25 mm) for 2T.
After winding s, the Q value at 280 MHz was measured using an impedance analyzer, and the results shown in Table 2 of FIGS. 1 and 5 were obtained. Such a high Q value has not been confirmed in JP-A-63-169005 .
【００１６】［実施例２］次に、［実施例１］で明らか
になった主成分の組成範囲の中で、Ｆｅ 2 Ｏ 3 ：２３ｍｏ
ｌ％；ＣｕＯ：９ｍｏｌ％；ＮｉＯ：６８ｍｏｌ％を選
び、これを固定して添加成分（ＰｂＯ；Ｔａｌｃ（有効
なＳｉＯ2成分）；ＣｏＯ）を、ＰｂＯ：０．５〜６．
０ｗｔ％，Ｔａｌｃ０．６〜８．０ｗｔ％（ＳｉＯ 2 ：
０．３〜４．０ｗｔ％），ＣｏＯ：０．５〜３．０ｗｔ
％，の範囲で変動させることにより図２〜図４が得られ
た。ここでの成型、焼成、巻線、測定等の方法は［実施
例１］の場合と同様である。そして、前記図２〜図４か
ら明らかであるように、２５０以上のＱ値が得られるの
はＰｂＯ：１．０〜５．０ｗｔ％，Ｔａｌｃ：１．０〜
５．５ｗｔ％，（有効成分としてのＳｉＯ 2 ：０．５〜
３．７ｗｔ％） ＣｏＯ：０．７〜２．５ｗｔ％，である。[Example 2] Next, within the composition range of the main component clarified in [Example 1], Fe 2 O 3 : 23 mo
1%; CuO: 9 mol%; NiO: 68 mol%, which were fixed and the additional components (PbO; Talc (effective SiO2 component); CoO) were selected; and PbO: 0.5-6.
0 wt%, Talc 0.6 to 8.0 wt% ( SiO 2 :
0.3-4.0 wt%), CoO: 0.5-3.0 wt%
2 to 4 were obtained by changing the ratio in the range of%. The method of molding, firing, winding, measurement, and the like here are the same as those in [Example 1]. As apparent from FIGS. 2 to 4, the Q value of 250 or more is obtained when PbO: 1.0 to 5.0 wt% and Talc: 1.0 to
5.5 wt%, ( SiO 2 as active ingredient: 0.5 to
(3.7 wt%) CoO: 0.7 to 2.5 wt%.
【００１７】なお、この［実施例２］においては多少の
ＭｇＯは残留するが、特性上の支障が生じる程の量では
なく、前記［実施例１］における酸化物磁性材料とほぼ
同程度の高いＱが得られた。この［実施例２］では、前
記［実施例１］の場合とは異なり、ＳｉＯ 2 単体に比較
して低廉なＴａｌｃを、焼成開始時の添加成分の一つと
して選択している。このために、［実施例１］の場合の
ものに比べて遜色のないＱ値を達成できることに加え
て、経済的にも恩恵をこうむるという顕著な利点があ
る。Although a small amount of MgO remains in [Example 2], the amount is not so large as to cause a problem in characteristics, and is as high as the oxide magnetic material in [Example 1]. Q was obtained. In [Example 2], unlike the case of [Example 1], Talc, which is inexpensive compared to SiO 2 alone, is selected as one of the additional components at the start of firing. For this reason, in addition to being able to achieve a Q value comparable to that in the case of [Embodiment 1], there is a remarkable advantage that economic benefits are obtained.
【００１８】前記［実施例１］および［実施例２］の磁
性材料からなる磁心を用いて、ページャー等の電子機器
用のアンテナコイルやインダクタンス素子を構成したと
ころ、所望の高いＱのものを実現することができた。When an antenna coil or an inductance element for an electronic device such as a pager is formed using the magnetic core made of the magnetic material of the above [Example 1] and [Example 2], a desired high Q is realized. We were able to.
【００１９】図２は、前記酸化物磁性材料（１００ｗｔ
％）に対する第１の添加成分であるＰｂＯの添加量（ｗ
ｔ％）の変動に基づくＱ値への影響の説明図である。こ
の図２において、２１はＰｂＯの添加量変動曲線であ
り、Ｑ値が２５０以上のＰｂＯの有効な添加範囲は１．
０〜５．０ｗｔ％である。FIG. 2 shows the oxide magnetic material (100 wt.
%) With respect to the amount of the first additive component PbO (w
FIG. 9 is an explanatory diagram of an influence on a Q value based on a variation of ( t%) . In FIG. 2, reference numeral 21 denotes a PbO addition amount variation curve, and the effective addition range of PbO having a Q value of 250 or more is 1.
0 to 5.0 wt%.
【００２０】図３は、前記酸化物磁性材料（１００ｗｔ
％）に対する第２の添加成分であるＳｉＯ2の添加量
（ｗｔ％）の変動に基づくＱ値への影響の説明図であ
る。この図３において、３１はＳｉＯ2の添加量変動曲
線であり、当該ＳｉＯ2の有効な添加範囲は０．５〜
３．７ｗｔ％である。FIG. 3 shows the oxide magnetic material (100 wt.
%) And the added amount of the second additive component SiO 2
FIG. 4 is an explanatory diagram of an influence on a Q value based on a change of (wt%) . In FIG. 3, 31 is the amount variation curve of SiO 2, the effective additive range of the SiO 2 is 0.5
3.7 wt%.
【００２１】そして、図４は、前記酸化物磁性材料（１
００ｗｔ％）に対する第３の添加成分であるＣｏＯの添
加量（ｗｔ％）の変動に基づくＱ値への影響の説明図で
ある。この図４において、４１はＣｏＯの添加量変動曲
線であり、ＣｏＯの有効な添加範囲は０．７〜２．５ｗ
ｔ％である。FIG. 4 shows the oxide magnetic material (1).
FIG. 9 is an explanatory diagram of an influence on a Q value based on a change in an addition amount (wt%) of CoO as a third additive component with respect to ( 00 wt%) . In FIG. 4, reference numeral 41 denotes a CoO addition amount variation curve, in which the effective addition range of CoO is 0.7 to 2.5 watts.
t%.
【００２２】[0022]
【発明の効果】以上説明したように、この発明に係る酸
化物磁性材料は、Ｆｅ 2 Ｏ 3 ：１５〜３０ｍｏｌ％，Ｃｕ
Ｏ：６ｍｏｌ％を超え１２ｍｏｌ％以下，及びＮｉＯ：
５８〜７９ｍｏｌ％を主成分とし、ＰｂＯ：１．０〜
５．０ｗｔ％，ＳｉＯ 2 ：０．５〜３．７ｗｔ％，及び
ＣｏＯ：０．７〜２．５ｗｔ％を添加成分として含有す
ることにより、例えば２００〜５００ＭＨｚの周波数帯
で高いＱが得られるという効果を奏する。As described above, according to the present invention, the acid <br/> compound magnetic material according to the present invention, Fe 2 O 3: 15~30mol% , Cu
O: more than 6 mol% and not more than 12 mol% , and NiO:
58-79 mol% as a main component, PbO: 1.0-
5.0wt%, SiO 2: 0.5~3.7wt% , and CoO: By containing 0.7～2.5Wt% as an additive component, such as high Q in the frequency band 200~500MHz obtain This has the effect.
【００２３】また、この発明に係る酸化物磁性材料の製
造方法は、その製造開始時の基材組成がＦｅ 2 Ｏ 3 ：１５
〜３０ｍｏｌ％，ＣｕＯ：６ｍｏｌ％を超え１２ｍｏｌ
％以下，及びＮｉＯ：５８〜７９ｍｏｌ％であり、前記
基材全量を基準としてＰｂＯ：１．０〜５．０ｗｔ％，
Ｔａｌｃ：１．０〜５．５ｗｔ％，及びＣｏＯ：０．７
〜２．５ｗｔ％を添加成分として含んでいて、焼結時に
は前記添加成分の一つであるＴａｌｃがＳｉＯ 2 ：０．
５〜３．７ｗｔ％および多少のＭｇＯとして変形残留す
るが、ここでのＭｇＯでは特性上の支障が起きることは
なく、単体としてのＳｉＯ 2 に比して低廉なＴａｌｃを
用いながら、前記請求項１における酸化物磁性材料とほ
ぼ同程度の高いＱが得られるという効果を奏する。[0023] The manufacturing method of an oxide magnetic material according to the present invention, the base composition at the time of start of production Fe 2 O 3: 15
３０30 mol %, CuO: more than 6 mol% and 12 mol
% And NiO: 58 to 79 mol%, and PbO: 1.0 to 5.0 wt%, based on the total amount of the base material.
Talc: 1.0-5.5 wt%, and CoO: 0.7
２．５2.5 wt% as an additive component, and at the time of sintering, one of the additive components, Talc, is SiO 2 : 0.1.
Although variations remains as 5～3.7Wt% and some MgO, where never interference with MgO in properties occurs in, while using inexpensive Talc compared to SiO 2 as a single, claim This has the effect of obtaining a high Q almost the same as that of the oxide magnetic material of 1.
【００２４】更に、上記のようにして得られた酸化物磁
性材料からなる磁心を用いて、ページャー等の電子機器
用のアンテナコイルやインダクタンス素子を構成するこ
とにより、所望の高いＱ値を実現できるいう効果を奏す
る。Further, a desired high Q value can be realized by forming an antenna coil or an inductance element for an electronic device such as a pager using the magnetic core made of the oxide magnetic material obtained as described above. This has the effect.
【図１】図１は、この発明に係る酸化物磁性材料の基材
組成（Ｆｅ2Ｏ3，ＣｕＯ，ＮｉＯの３元系、単位はｍｏ
ｌ％）の変動に基づくＱ値（測定点の上部に表示）への
影響の説明図である。FIG. 1 is a diagram showing a base material composition (a ternary system of Fe 2 O 3 , CuO, and NiO, in units of mo) of an oxide magnetic material according to the present invention.
FIG. 3 is an explanatory diagram of an influence on a Q value (displayed above a measurement point) based on a variation of (1%).
【図２】図２は、前記酸化物磁性材料（１００ｗｔ％）
に対する添加成分の一つであるＰｂＯの添加量（ｗｔ
％）の変動に基づくＱ値への影響の説明図である。FIG. 2 shows the oxide magnetic material (100 wt%)
Of PbO, which is one of the additional components, (wt.
It is an explanatory view of the influence on Q value based on the fluctuation of ( %) .
【図３】図３は、前記酸化物磁性材料（１００ｗｔ％）
に対する添加成分の一つであるＳｉＯ2の添加量（ｗｔ
％）の変動に基づくＱ値への影響の説明図である。FIG. 3 shows the oxide magnetic material (100 wt%)
Amount of SiO 2 , which is one of the additional components (wt.
It is an explanatory view of the influence on Q value based on the fluctuation of ( %) .
【図４】図４は、前記酸化物磁性材料（１００ｗｔ％）
に対する添加成分の一つであるＣｏＯの添加量（ｗｔ
％）の変動に基づくＱ値への影響の説明図である。FIG. 4 shows the oxide magnetic material (100 wt%)
Amount of CoO, which is one of the additional components (wt.
It is an explanatory view of the influence on Q value based on the fluctuation of ( %) .
【図５】図５は、この発明の効果を説明するための表
（表２）である。FIG. 5 is a table (Table 2) for explaining effects of the present invention.
【図６】図６は、従来例についての説明のための表（表
１）である。FIG. 6 is a table (Table 1) for explaining a conventional example.
１１：Ｆｅ2Ｏ3の変動線分 １２：ＣｕＯの変動線分 １３：ＮｉＯの変動線分 ２１：ＰｂＯの添加量変動曲線 ３１：ＳｉＯ2の添加量変動曲線 ４１：ＣｏＯの添加量変動曲線11: Variation line segment of Fe 2 O 3 12: Variation line segment of CuO 13: Variation line segment of NiO 21: Curve of addition amount of PbO 31: Curve of addition amount of SiO 2 41: Curve of addition amount of CoO
Claims (2)
めの酸化物磁性材料であって、基材は主成分の組成をＦ
ｅ2Ｏ3：１５〜３０ｍｏｌ％，ＣｕＯ：６ｍｏｌ％を超
え１２ｍｏｌ％以下，及びＮｉＯ：５８〜７９ｍｏｌ％
とし、前記基材の全量を基準（１００ｗｔ％）として更
に、ＰｂＯ：１．０〜５．０ｗｔ％，ＳｉＯ2：０．５
〜３．７ｗｔ％，及びＣｏＯ：０．７〜２．５ｗｔ％を
添加成分として含有することを特徴とする酸化物磁性材
料。1. An oxide magnetic material for a magnetic core of a coil used in a high frequency band, wherein a base material has a composition of F
e 2 O 3: 15~30mol%, CuO: 12mol% exceed 6 mol% or less, and NiO: 58~79mol%
With the total amount of the base material as a reference (100 wt%).
To, PbO: 1.0~5.0wt%, SiO 2 : 0.5
An oxide magnetic material containing as an additive component up to 3.7 wt% and CoO: 0.7 to 2.5 wt%.
めの酸化物磁性材料の製造方法であって、主成分の組成
がＦｅ2Ｏ3：１５〜３０ｍｏｌ％，ＣｕＯ：６ｍｏｌ％
を超え１２ｍｏｌ％以下，及びＮｉＯ：５８〜７９ｍｏ
ｌ％からなる基材に、前記基材の全量を基準（１００ｗ
ｔ％）として更に、ＰｂＯ：１．０〜５．０ｗｔ％，Ｔ
ａｌｃ：１．０〜５．５ｗｔ％，及びＣｏＯ：０．７〜
２．５ｗｔ％を添加して焼成することを特徴とする酸化
物磁性材料の製造方法。2. A method of manufacturing an oxide magnetic material for magnetic core of a coil used in a high frequency band, the composition of the main component
Is Fe 2 O 3 : 15 to 30 mol%, CuO: 6 mol%
Over 12 mol% and NiO: 58-79 mo
1% of the base material based on the total amount of the base material (100 w
tb), PbO: 1.0 to 5.0 wt%, T
alc: 1.0-5.5 wt%, and CoO: 0.7-
A method for producing an oxide magnetic material, comprising adding 2.5 wt% and firing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14644595A JP3170179B2 (en) | 1995-06-13 | 1995-06-13 | Oxide magnetic material and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14644595A JP3170179B2 (en) | 1995-06-13 | 1995-06-13 | Oxide magnetic material and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08339913A JPH08339913A (en) | 1996-12-24 |
| JP3170179B2 true JP3170179B2 (en) | 2001-05-28 |
Family
ID=15407815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14644595A Expired - Fee Related JP3170179B2 (en) | 1995-06-13 | 1995-06-13 | Oxide magnetic material and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3170179B2 (en) |
Families Citing this family (3)
| 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 |
| JP3769137B2 (en) | 1998-12-28 | 2006-04-19 | Ｔｄｋ株式会社 | Inductance element and manufacturing method thereof |
| CN102122557A (en) * | 2010-12-14 | 2011-07-13 | 深圳顺络电子股份有限公司 | Low magnetic ferrite material and manufacturing method thereof |
-
1995
- 1995-06-13 JP JP14644595A patent/JP3170179B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08339913A (en) | 1996-12-24 |
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