JP2816946B2 - Oxide magnetic material for high frequency - Google Patents
Oxide magnetic material for high frequencyInfo
- Publication number
- JP2816946B2 JP2816946B2 JP7064821A JP6482195A JP2816946B2 JP 2816946 B2 JP2816946 B2 JP 2816946B2 JP 7064821 A JP7064821 A JP 7064821A JP 6482195 A JP6482195 A JP 6482195A JP 2816946 B2 JP2816946 B2 JP 2816946B2
- Authority
- JP
- Japan
- Prior art keywords
- mhz
- relationship
- fqmax
- magnetic material
- magnetic
- 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.)
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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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高周波帯域で使用され
る酸化物磁性材料に関し、特に、スピネル型フェライト
磁性材料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 used in a high frequency band, and more particularly to a spinel ferrite magnetic material.
【０００２】[0002]
【従来の技術】近年、電子機器技術の進歩により、電子
機器内で扱われる信号の周波数帯域が、高周波側に広が
り、その帯域は数１０ＭＨｚ〜数ＧＨｚにまで及んでい
る。2. Description of the Related Art In recent years, with the advance of electronic equipment technology, the frequency band of signals handled in electronic equipment has been extended to the high frequency side, and the band has been extended from several tens of MHz to several GHz.
【０００３】従来、このような高周波域で使用されるイ
ンダクタンス素子用の軟磁性材料には、金属に比べ電気
抵抗が高く、周波数特性が高周波化できることから、Ｍ
ｎ−Ｚｎ系フェライト、Ｎｉ−Ｚｎ系フェライト、Ｍｎ
−Ｍｇ系フェライトで代表されるようなスピネル型フェ
ライト焼結体が使用されてきた。Conventionally, a soft magnetic material for an inductance element used in such a high-frequency region has a higher electric resistance than a metal and can have a higher frequency characteristic.
n-Zn ferrite, Ni-Zn ferrite, Mn
-A spinel-type ferrite sintered body represented by Mg-based ferrite has been used.
【０００４】[0004]
【発明が解決しようとする課題】このような高周波域で
使用される材料として、特開昭５５−１３６１７２に開
示されているものがある。しかしながら、ここで示され
ている組成範囲の材料は、μが高く、通常、約１０ＭＨ
ｚ以下の周波数に適応した磁芯用材料であり、それ以上
の周波数帯域では、損失が極めて大きく磁芯用材料とし
ては、使用が不可能であるという欠点を有していた。そ
のため、電子機器の駆動周波数の高周波化への対応が困
難であった。As a material used in such a high frequency range, there is a material disclosed in Japanese Patent Application Laid-Open No. 55-136172. However, materials in the composition ranges shown here have high μ, typically around 10 MH
It is a material for a magnetic core adapted to a frequency equal to or lower than z, and has a disadvantage that loss is extremely large in a frequency band higher than z and cannot be used as a material for a magnetic core. Therefore, it has been difficult to cope with a higher driving frequency of the electronic device.
【０００５】そこで、本発明の課題は、これらの欠点を
排除し、３０ＭＨｚ以上でも磁気損失が小さく、しかも
実効透磁率の温度変化が小さい高周波用酸化物磁性材料
を提供することにある。It is an object of the present invention to eliminate these drawbacks and to provide a high-frequency oxide magnetic material having a small magnetic loss even at 30 MHz or more and a small change in effective magnetic permeability with temperature.
【０００６】[0006]
【課題を解決するための手段】本発明者は、検討を重ね
た結果、Ｎｉ、Ｃｕ、Ｚｎ、Ｆｅ、Ｖの酸化物を主成分
として含有するスピネル型フェライトの組成比をａ［Ｎ
ｉ(1-x)・Ｃｕx］Ｏ・ｂＺｎＯ・ｃＦｅ2Ｏ3・ｄＶ2Ｏ5と
し、かつその範囲をａ＋ｂ＋ｃ＋ｄ＝１００、０.１≦
ｘ≦０.８、０≦ｂ≦８、２３≦ｃ≦４０、０≦ｄ≦
３、ｂ＋ｃ≦４０とすることにより、３０ＭＨｚ以上の
周波数帯に適用できるスピネル型フェライト材料を工業
的に製造できることを見い出した。As a result of repeated studies, the present inventor has found that the composition ratio of a spinel ferrite containing oxides of Ni, Cu, Zn, Fe and V as a main component is a [N
i (1-x) · Cu x ] O · bZnO · cFe 2 O 3 · dV 2 O 5 , and the range is a + b + c + d = 100, 0.1 ≦
x ≦ 0.8, 0 ≦ b ≦ 8, 23 ≦ c ≦ 40, 0 ≦ d ≦
3. It has been found that by setting b + c ≦ 40, a spinel-type ferrite material applicable to a frequency band of 30 MHz or more can be industrially manufactured.
【０００７】即ち、本発明は、Ｎｉ、Ｃｕ、Ｚｎ、Ｆ
ｅ、Ｖの酸化物を主成分として含有する高周波用酸化物
磁性材料において、主成分の組成比がａ［Ｎｉ(1-x)・Ｃ
ｕx］Ｏ・ｂＺｎＯ・ｃＦｅ2Ｏ3・ｄＶ2Ｏ5（但し、ａ＋ｂ
＋ｃ＋ｄ＝１００、０.１≦ｘ≦０.８、０≦ｂ≦８、２
３≦ｃ≦４０、０≦ｄ≦３、ｂ＋ｃ≦４０）で表わされ
ることを特徴とする高周波用酸化物磁性材料である。That is, the present invention relates to Ni, Cu, Zn, F
In a high frequency oxide magnetic material containing an oxide of e and V as a main component, the composition ratio of the main component is a [Ni (1-x) · C
u x ] O.bZnO.cFe 2 O 3 .dV 2 O 5 (however, a + b
+ C + d = 100, 0.1 ≦ x ≦ 0.8, 0 ≦ b ≦ 8, 2
3 ≦ c ≦ 40, 0 ≦ d ≦ 3, b + c ≦ 40).
【０００８】ここで、本発明において、材料特性の評価
はμ30MHz、Ｑmax、ｆQmax、△μTで行っている。μ
30MHzは３０ＭＨｚにおける実効透磁率を表し、この値
はＬ素子を作製した場合、インダクタンスを高くとれる
ことから、一般的には高い方がよいが、高過ぎると高周
波特性が低下するという関係にある。また、ＱmaxはＱ
｛損失係数（ｔａｎδ）の逆数｝の最大値を示すもので
あり、磁芯用材料としては、この値が高い程、高性能と
なる。また、ｆQmaxはＱmaxが最大値を示した周波数を
示し、この周波数の前後が磁芯用材料としては有効に作
動できる周波数帯域となる。また、△μTは２０℃を基
準とした場合の０℃から８０℃におけるμの温度変化率
を表し、次式より求めた。 △μT＝（μ80−μ0）／μ20×１００／８０ ここで、μ0、μ20、μ80はそれぞれ０℃、２０℃、８
０℃におけるμの値を示している。[0008] In the present invention, the evaluation of material properties is carried out in μ 30MHz, Qmax, fQmax, △ μ T. μ
30 MHz indicates the effective magnetic permeability at 30 MHz, and this value is generally better, since the inductance can be increased when an L element is manufactured. However, if the value is too high, the high frequency characteristics deteriorate. Qmax is Q
It indicates the maximum value of {the reciprocal of the loss coefficient (tan δ)}, and the higher the value, the higher the performance of the magnetic core material. Further, fQmax indicates a frequency at which Qmax shows the maximum value, and a frequency band before and after this frequency is a frequency band in which the magnetic core material can operate effectively. Also, △ mu T represents the temperature change rate of the mu at 80 ° C. from 0 ℃ when referenced to 20 ° C., was determined from the following equation. Δμ T = (μ 80 -μ 0 ) / μ 20 × 100/80 Here, μ 0 , μ 20 , and μ 80 are 0 ° C., 20 ° C., 8
The value of μ at 0 ° C. is shown.
【０００９】[0009]
【作用】本発明の酸化物磁性材料の組成比ａ［Ｎｉ
(1-x)・Ｃｕx］Ｏ・ｂＺｎＯ・ｃＦｅ2Ｏ3・ｄＶ2Ｏ5、ａ＋
ｂ＋ｃ＋ｄ＝１００において、０.１≦ｘ≦０.８及び０
≦ｄ≦３と限定したのは、この範囲を越えるとμの温度
特性が著しく劣化し、このような磁芯用材料を用いてイ
ンダクタンス素子を作製した場合、温度に対するＬ（イ
ンダクタンス）の変動が大きくなり、信頼性という点で
不利益となるからである。The composition ratio of the oxide magnetic material of the present invention, a [Ni
(1-x) .Cu x ] O.bZnO.cFe 2 O 3 .dV 2 O 5 , a +
For b + c + d = 100, 0.1 ≦ x ≦ 0.8 and 0
The reason for limiting to ≦ d ≦ 3 is that if it exceeds this range, the temperature characteristic of μ will be significantly deteriorated, and when an inductance element is manufactured using such a material for a magnetic core, the variation of L (inductance) with respect to temperature will vary. This is because it becomes large and disadvantageous in terms of reliability.
【００１０】また、０≦ｂ≦８、２３≦ｃ≦４０、ｂ＋
ｃ≦４０と限定したのは、ｂ＝８、ｃ＝４０、ｂ＋ｃ＝
４０を上回るとｆQmaxが３０ＭＨｚ以下となり、３０Ｍ
Ｈｚ以上に適用できる高周波用の磁芯用材料とならなく
なるためである。Also, 0 ≦ b ≦ 8, 23 ≦ c ≦ 40, b +
The reason for limiting c ≦ 40 is that b = 8, c = 40, b + c =
If it exceeds 40, fQmax becomes 30 MHz or less, and 30M
This is because it will not be a material for magnetic cores for high frequencies that can be applied at Hz or higher.
【００１１】また、ｃが２３を下回るとＱmaxが減少
し、工業的に不利益となるからである。On the other hand, if c is less than 23, Qmax decreases, which is industrially disadvantageous.
【００１２】また、本発明において、Ｖ2Ｏ5を含有させ
ているが、その効果はμの温度特性を向上できることで
あり、温度変化率がＶ2Ｏ5無添加の場合の約１／２とな
っている。In the present invention, V 2 O 5 is contained. The effect is that the temperature characteristics of μ can be improved, and the temperature change rate is about 1/2 that of the case where V 2 O 5 is not added. It has become.
【００１３】[0013]
【実施例】以下実施例について述べる。Embodiments will be described below.
【００１４】（実施例１）化学組成比が６０［Ｎｉ
(1-x)・Ｃｕx］Ｏ・５ＺｎＯ・３４Ｆｅ2Ｏ3・１Ｖ2Ｏ5（但
し、ｘ＝０、０.１、０.２、０.３、０.４、０.５、０.
６、０.７、０.８、０.９）となるように、酸化鉄（α
−Ｆｅ2Ｏ3）、酸化ニッケル（ＮｉＯ）、酸化第二銅
（ＣｕＯ）、酸化亜鉛（ＺｎＯ）及び五酸化バナジウム
（Ｖ2Ｏ5）を原料として調製し、ボールミルにて２０時
間湿式混合した。ここで、使用した原料粉末の粒度は、
全て０.５μｍ以下のものである。次にこれらの原料混
合粉末を大気中８００℃で２時間仮焼した後、ボールミ
ルにて３時間湿式粉砕し、成形用粉末とした。Example 1 A chemical composition ratio of 60 [Ni
(1-x) .Cu x ] O.5ZnO.34Fe 2 O 3 .1V 2 O 5 (where x = 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0 .
6, 0.7, 0.8, 0.9) so that iron oxide (α
-Fe 2 O 3 ), nickel oxide (NiO), cupric oxide (CuO), zinc oxide (ZnO) and vanadium pentoxide (V 2 O 5 ) were prepared as raw materials and wet-mixed in a ball mill for 20 hours. . Here, the particle size of the raw material powder used is
All are 0.5 μm or less. Next, these raw material mixed powders were calcined in the air at 800 ° C. for 2 hours, and then wet-pulverized in a ball mill for 3 hours to obtain molding powders.
【００１５】次に、これらの成形用粉末を外径１０ｍ
ｍ、内径２ｍｍの金型を用いて、高さ１０ｍｍの成形体
となるように成形圧２ｔｏｎ／ｃｍ2で圧縮成形した。
更にこれらの成形体を大気中、徐熱、炉冷にて、９５０
℃で４時間保持し、焼結した。これらの焼結体は、外径
約８.５ｍｍ、内径約１.７ｍｍ、高さ約７.５ｍｍであ
った。これらの焼結体の磁芯特性を測定した。その結果
を図１に示す。Next, these molding powders were prepared with an outer diameter of 10 m.
Using a mold having a diameter of 2 mm and an inner diameter of 2 mm, compression molding was performed at a molding pressure of 2 ton / cm 2 so as to obtain a molded body having a height of 10 mm.
Further, these compacts are heated to 950 in the air, gradually heated, and cooled in a furnace.
C. for 4 hours and sintered. These sintered bodies had an outer diameter of about 8.5 mm, an inner diameter of about 1.7 mm, and a height of about 7.5 mm. The magnetic core characteristics of these sintered bodies were measured. The result is shown in FIG.
【００１６】図１に示すように、ｘ＝０.１〜０.８の範
囲を越えると△μTが著しく大きくなることがわかる。
従ってｘ＝０.１〜０.８の範囲が有用な組成であること
がわかる。As shown in FIG. 1, when x exceeds the range of 0.1 to 0.8, Δμ T becomes significantly large.
Therefore, it is understood that the range of x = 0.1 to 0.8 is a useful composition.
【００１７】（実施例２）化学組成比以外は、実施例１
と同様な条件、手順にて、焼結体を作製した。即ち、化
学組成比がａ（Ｎｉ0.7・Ｃｕ0.3）Ｏ・ｂＺｎＯ・２３Ｆ
ｅ2Ｏ3・１Ｖ2Ｏ5（但し、ａ＋ｂ＝７６、ｂ＝０、１、
２、３、４、５、６、７、８、９、１０）となるよう
に、成形用粉末を作製し、成形体を得た後、これらの成
形体を９５０℃で２時間焼結し、磁芯特性を測定した。
その結果を図２に示す。Example 2 Example 1 except for the chemical composition ratio
Under the same conditions and procedures as in the above, a sintered body was produced. That is, when the chemical composition ratio is a (Ni 0.7 · Cu 0.3 ) O · bZnO · 23F
e 2 O 3 .1V 2 O 5 (however, a + b = 76, b = 0, 1,
2, 3, 4, 5, 6, 7, 8, 9, 10), a molding powder was prepared, and after obtaining molded bodies, these molded bodies were sintered at 950 ° C. for 2 hours. And the magnetic core characteristics were measured.
The result is shown in FIG.
【００１８】ｂ＝８を上回ると、ｆQmaxが３０ＭＨｚを
下回ることがわかる。従ってｂ＝０〜８の組成が有用で
あることがわかる。It can be seen that when b = 8, fQmax falls below 30 MHz. Therefore, it is understood that the composition of b = 0 to 8 is useful.
【００１９】（実施例３）化学組成比以外は、実施例１
と同様な条件、手順にて、焼結体を作製した。即ち、化
学組成比がａ（Ｎｉ0.7・Ｃｕ0.3）Ｏ・ｃＦｅ2Ｏ3・１Ｖ2
Ｏ5（但し、ａ＋ｃ＝９９、ｃ＝２２、２３、２４、２
６、２８、３６、３８、４０、４１、４２）となるよう
に、成形用粉末を作製し、成形体を得た後、これらの成
形体を９５０℃で２時間焼結し、磁芯特性を測定した。
その結果を図３に示す。Example 3 Example 1 except for the chemical composition ratio
Under the same conditions and procedures as in the above, a sintered body was produced. That is, when the chemical composition ratio is a (Ni 0.7 · Cu 0.3 ) O · cFe 2 O 3 .1V 2
O 5 (however, a + c = 99, c = 22, 23, 24, 2
6, 28, 36, 38, 40, 41, 42), powders for molding were prepared, and after obtaining compacts, these compacts were sintered at 950 ° C. for 2 hours to obtain magnetic core properties. Was measured.
The result is shown in FIG.
【００２０】ｃ＝２３を下回るとＱmaxが著しく低下す
ることがわかる。また、ｃ＝４０を越えると、ｆQmaxが
３０ＭＨｚ以下となる。従って、ｃ＝２３〜４０の範囲
が有用な組成であることがわかる。It can be seen that when c is less than 23, Qmax is significantly reduced. When c exceeds 40, fQmax becomes 30 MHz or less. Therefore, it is understood that the range of c = 23 to 40 is a useful composition.
【００２１】（実施例４）化学組成比以外は、実施例１
と同様な条件、手順にて、焼結体を作製した。即ち、化
学組成比がａ（Ｎｉ0.7・Ｃｕ0.3）Ｏ・５ＺｎＯ・３５Ｆ
ｅ2Ｏ3・ｄＶ2Ｏ5（但し、ａ＋ｄ＝６０、ｄ＝０、０.
５、１、１.５、２、２.５、３、３.５）となるよう
に、成形用粉末を作製し、成形体を得た後、これらの成
形体を９５０℃で２時間焼結し、磁芯特性を測定した。
その結果を図４に示す。Example 4 Example 1 except for the chemical composition ratio
Under the same conditions and procedures as in the above, a sintered body was produced. That is, when the chemical composition ratio is a (Ni 0.7 .Cu 0.3 ) O.5ZnO.35F
e 2 O 3 .dV 2 O 5 (however, a + d = 60, d = 0, 0.
5, 1, 1.5, 2, 2.5, 3, 3.5), a molding powder was prepared, and a compact was obtained. The compact was fired at 950 ° C. for 2 hours. And magnetic core characteristics were measured.
FIG. 4 shows the results.
【００２２】ｄ＝３を越えると、△μTが著しく大きく
なることがわかる。従って、０≦ｄ≦３の範囲が有用な
組成であることがわかる。When d exceeds 3, it can be seen that △ μ T becomes extremely large. Therefore, it is understood that the range of 0 ≦ d ≦ 3 is a useful composition.
【００２３】（実施例５）化学組成比以外は、実施例１
と同様な条件、手順にて、焼結体を作製した。即ち、化
学組成比がａ（Ｎｉ0.7・Ｃｕ0.3）Ｏ・ｂＺｎＯ・ｃＦｅ2
Ｏ3・ｄＶ2Ｏ5（但し、ａ＋ｂ＋ｃ＋ｄ＝１００、ｂ＝
０、２、４、６、８、ｃ＝３２、３４、３６、３８、４
０、ｄ＝１、３）となるように、成形用粉末を作製し、
成形体を得た後、これらの成形体を９５０℃で２時間焼
結し、磁芯特性（ｆQmax）を測定した。その結果を表１
及び表２に示す。表１にはｄ＝１の場合、表２にはｄ＝
３の場合を示した。(Example 5) Example 1 was repeated except for the chemical composition ratio.
Under the same conditions and procedures as in the above, a sintered body was produced. That is, when the chemical composition ratio is a (Ni 0.7 · Cu 0.3 ) O · bZnO · cFe 2
O 3 · dV 2 O 5 (however, a + b + c + d = 100, b =
0, 2, 4, 6, 8, c = 32, 34, 36, 38, 4
0, d = 1, 3) to prepare a molding powder,
After obtaining the compacts, these compacts were sintered at 950 ° C. for 2 hours, and the magnetic core characteristics (fQmax) were measured. Table 1 shows the results.
And Table 2. In Table 1, when d = 1, and in Table 2, d =
3 is shown.
【００２４】[0024]
【表１】 [Table 1]
【００２５】[0025]
【表２】 [Table 2]
【００２６】ｂ＋ｃ＝４０を越えるとｆQmaxが３０ＭＨ
ｚ以下となる。従って、ｂ＋ｃ≦４０の範囲が有用な組
成であることがわかる。When b + c exceeds 40, fQmax becomes 30 MH
z or less. Therefore, it is understood that the range of b + c ≦ 40 is a useful composition.
【００２７】尚、本実施例においては、ＮｉＯ・ＣｕＯ・
ＺｎＯ・α−Ｆｅ2Ｏ3・Ｖ2Ｏ5を原料として使用したフェ
ライト焼結体のみについて述べているが、必ずしもこれ
らの酸化物原料に限定されるものではなく、焼結体がス
ピネル型フェライトを形成するものであれば、他の原料
系、例えば、炭酸塩等を使用しても差し支えない。In this embodiment, NiO.CuO.
Although only a ferrite sintered body using ZnO · α-Fe 2 O 3 · V 2 O 5 as a raw material is described, the present invention is not necessarily limited to these oxide raw materials, and the sintered body may be a spinel type ferrite. May be used as long as it forms the other raw materials, for example, carbonates.
【００２８】また、粉末の予備焼成、及び成形体の焼結
を大気中で行っているが、焼結後の焼結体がスピネル型
フェライトであれば、成形用粉末の製造方法が予備焼成
なし、共沈法、水熱合成法、噴霧焙焼法を適用しても、
また、予備焼成及び焼成雰囲気が大気中に比べ酸化性で
あっても還元性であってもよい。The pre-firing of the powder and the sintering of the compact are performed in the air. However, if the sintered compact after sintering is a spinel-type ferrite, the method for producing the compacting powder is not pre-baked. , Coprecipitation method, hydrothermal synthesis method, spray roasting method,
Further, the pre-firing and firing atmosphere may be oxidizing or reducing as compared with the atmosphere.
【００２９】以上、実施例１〜５からわかるように、３
０ＭＨｚ以上に適用できる磁性材料を工業的に有用に得
ることができる。As can be seen from Examples 1 to 5, 3
A magnetic material applicable to 0 MHz or more can be industrially usefully obtained.
【００３０】[0030]
【発明の効果】本発明によれば、３０ＭＨｚ以上でも、
磁気損失が小さく、しかも実効透磁率の温度変化が小さ
い高周波用酸化物磁性材料を提供することができた。According to the present invention, even at 30 MHz or more,
It was possible to provide a high-frequency oxide magnetic material having a small magnetic loss and a small temperature change in the effective magnetic permeability.
【図１】実施例１におけるＣｕの組成値ｘに対するフェ
ライト焼結体の磁気特性μ30MH z、△μT、ｆQmax及びＱ
maxの関係を示す図。図１（ａ）はｘとμ30MHzとの関係
を示す図。図１（ｂ）はｘと△μTとの関係を示す図。
図１（ｃ）はｘとｆQmaxの関係を示す図。図１（ｄ）は
ｘとＱmaxの関係を示す図。[1] Magnetic properties mu 30 mH z of the ferrite sintered body with respect to the composition value x of Cu in Example 1, △ μ T, fQmax and Q
The figure which shows the relationship of max. FIG. 1A is a diagram showing the relationship between x and μ30 MHz . 1 (b) is diagram showing the relation between x and △ mu T.
FIG. 1C is a diagram showing a relationship between x and fQmax. FIG. 1D is a diagram showing a relationship between x and Qmax.
【図２】実施例２におけるＺｎＯの組成値ｂに対するフ
ェライト焼結体の磁気特性μ30 MHz、ｆQmax及びＱmaxの
関係を示す図。図２（ａ）はｂとμ30MHzとの関係を示
す図。図２（ｂ）はｂとｆQmaxの関係を示す図。図２
（ｃ）はｂとＱmaxの関係を示す図。FIG. 2 is a view showing a relationship among a magnetic property μ 30 MHz , fQmax and Qmax of a ferrite sintered body with respect to a composition value b of ZnO in Example 2. FIG. 2A is a diagram showing the relationship between b and μ30 MHz . FIG. 2B is a diagram showing a relationship between b and fQmax. FIG.
(C) is a diagram showing the relationship between b and Qmax.
【図３】実施例３におけるＦｅ2Ｏ3の組成値ｃに対する
フェライト焼結体の磁気特性μ30MHz、ｆQmax及びＱmax
の関係を示す図。図３（ａ）はｃとμ30MHzとの関係を
示す図。図３（ｂ）はｃとｆQmaxの関係を示す図。図３
（ｃ）はｃとＱmaxの関係を示す図。[3] Magnetic properties of the ferrite sintered body with respect to the composition value c of Fe 2 O 3 in Example 3 μ 30MHz, fQmax and Qmax
FIG. FIG. 3A is a diagram showing a relationship between c and μ30 MHz . FIG. 3B is a diagram showing a relationship between c and fQmax. FIG.
(C) is a diagram showing the relationship between c and Qmax.
【図４】実施例４におけるＶ2Ｏ5の組成値ｄに対するフ
ェライト焼結体の磁気特性μ30 MHz、△μT、ｆQmax及び
Ｑmaxの関係を示す図。図４（ａ）はｄとμ30MHzとの関
係を示す図。図４（ｂ）はｄと△μTとの関係を示す
図。図４（ｃ）はｄとｆQmaxの関係を示す図。図４
（ｄ）はｄとＱmaxの関係を示す図。FIG. 4 is a graph showing the relationship among the magnetic properties μ 30 MHz , Δμ T , fQmax and Qmax of a ferrite sintered body with respect to the composition value d of V 2 O 5 in Example 4. FIG. 4A is a diagram showing a relationship between d and μ30 MHz . FIG. 4 (b) shows the relationship between d and △ mu T. FIG. 4C is a diagram showing the relationship between d and fQmax. FIG.
(D) is a diagram showing the relationship between d and Qmax.
Claims (1)
主成分として含有する高周波用酸化物磁性材料におい
て、主成分の組成比がａ［Ｎｉ(1-x)・Ｃｕx］Ｏ・ｂＺｎ
Ｏ・ｃＦｅ2Ｏ3・ｄＶ2Ｏ5（但し、ａ＋ｂ＋ｃ＋ｄ＝１０
０、０.１≦ｘ≦０.８、０≦ｂ≦８、２３≦ｃ≦４０、
０≦ｄ≦３、ｂ＋ｃ≦４０）で表わされることを特徴と
する高周波用酸化物磁性材料。1. A high-frequency oxide magnetic material containing an oxide of Ni, Cu, Zn, Fe, V as a main component, wherein the composition ratio of the main component is a [Ni (1-x) · Cu x ] O.・ BZn
O · cFe 2 O 3 · dV 2 O 5 ( where, a + b + c + d = 10
0, 0.1 ≦ x ≦ 0.8, 0 ≦ b ≦ 8, 23 ≦ c ≦ 40,
0 ≦ d ≦ 3, b + c ≦ 40) An oxide magnetic material for high frequency use characterized by the following formula:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7064821A JP2816946B2 (en) | 1995-02-27 | 1995-02-27 | Oxide magnetic material for high frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7064821A JP2816946B2 (en) | 1995-02-27 | 1995-02-27 | Oxide magnetic material for high frequency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08236337A JPH08236337A (en) | 1996-09-13 |
| JP2816946B2 true JP2816946B2 (en) | 1998-10-27 |
Family
ID=13269308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7064821A Expired - Fee Related JP2816946B2 (en) | 1995-02-27 | 1995-02-27 | Oxide magnetic material for high frequency |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2816946B2 (en) |
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|---|---|---|---|---|
| KR101421455B1 (en) * | 2007-04-17 | 2014-07-22 | 히타치 긴조쿠 가부시키가이샤 | Low-loss ferrite, and electronic component using the same |
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1995
- 1995-02-27 JP JP7064821A patent/JP2816946B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08236337A (en) | 1996-09-13 |
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