JPH09115730A - Multilayered inductance element - Google Patents
Multilayered inductance elementInfo
- Publication number
- JPH09115730A JPH09115730A JP7296077A JP29607795A JPH09115730A JP H09115730 A JPH09115730 A JP H09115730A JP 7296077 A JP7296077 A JP 7296077A JP 29607795 A JP29607795 A JP 29607795A JP H09115730 A JPH09115730 A JP H09115730A
- Authority
- JP
- Japan
- Prior art keywords
- laminated
- inductance element
- conductor
- magnetic
- frequency band
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/041—Printed circuit coils
- H01F41/046—Printed circuit coils structurally combined with ferromagnetic material
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種電子機器に適
用され、ＬＣフィルターや共振器として働く積層型イン
ダクタンス素子に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated inductance element which is applied to various electronic devices and serves as an LC filter or a resonator.
【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１００ＭＨｚ〜数ＧＨｚにまで及ん
でいる。このような高周波帯域における信号の分離、或
は合成等の回路で使用される共振器としては、目的周波
数帯域で高利得（Ｑ）を有することが要求され、磁性体
粉末を含有する磁性体層用ペーストと導電粉末を含有す
る導電体層用ペーストを交互に印刷し、同時焼成した積
層型インダクタンス素子が使用されてきた。2. Description of the Related Art In recent years, due to advances in electronic equipment technology, the frequency band of signals handled in electronic equipment has expanded to the high frequency side, and the band extends from several hundred MHz to several GHz. A resonator used in a circuit for separating or synthesizing signals in such a high frequency band is required to have a high gain (Q) in a target frequency band, and a magnetic layer containing magnetic powder. A laminated inductance element has been used in which a paste for a conductor and a paste for a conductor layer containing a conductive powder are alternately printed and simultaneously fired.
【０００３】[0003]
【発明が解決しようとする課題】一般的に、インダクタ
ンス素子用の軟磁性磁心材料として、Ｎｉ、Ｚｎ、Ｃ
ｕ、Ｆｅから構成されたスピネル型フェライト焼結体が
使用されてきた。しかしながら、これらの組成系のイン
ダクタンス素子を、高周波域（１００ＭＨｚ）で使用し
た場合、利得（Ｑ）が著しく低下すると共に、インダク
タンスも急激に低下し、高周波域ではインダクタンス素
子として全く機能しなくなるという問題点があった。Generally, Ni, Zn, C are used as the soft magnetic core material for the inductance element.
Spinel-type ferrite sintered bodies composed of u and Fe have been used. However, when the inductance element of these composition systems is used in a high frequency range (100 MHz), the gain (Q) is remarkably reduced, and the inductance is also rapidly reduced, so that the inductance element does not function at all in the high frequency range. There was a point.
【０００４】そこで、本発明の課題は、高周波帯域での
インダクタンス及びＱ特性に優れた、広い周波数帯域に
適用できる積層型インダクタンス素子を提供することに
ある。Therefore, an object of the present invention is to provide a laminated inductance element which is excellent in inductance and Q characteristic in a high frequency band and can be applied to a wide frequency band.
【０００５】[0005]
【課題を解決するための手段】本発明者は、種々検討を
進めた結果、スピネル型軟磁性フェライト粉末の基本組
成が、ａＦｅ2Ｏ3、ｂＮｉＯ、ｃＣｕＯ（ｍｏｌ％）＋
添加物からなり、主成分を各々４２＜ａ＜５０、４０＜
ｂ＜４８、４＜ｃ＜８、ａ＋ｂ＋ｃ＝１００ｍｏｌ％と
し、添加物としてＢｉ2Ｏ3、ＭｎＯ、ＣｏＯを各々０〜
０.５ｗｔ％（各元素とも０ｗｔ％を含まない）とした
範囲の組成からなり、磁性体層と導電体層を交互に積層
し、内部に導電体のコイルを形成し、広い周波数帯域で
の適用が可能な積層型インダクタンス素子を得ることが
できることを見い出した。As a result of various studies, the present inventor has found that the basic composition of spinel type soft magnetic ferrite powder is aFe 2 O 3 , bNiO, cCuO (mol%) +
It consists of additives, and the main components are 42 <a <50, 40 <
b <48, 4 <c <8, a + b + c = 100 mol%, and Bi 2 O 3 , MnO, and CoO as additives are 0 to 0, respectively.
The composition is in the range of 0.5 wt% (not including 0 wt% for each element), the magnetic layers and the conductive layers are alternately laminated, and the coil of the conductive material is formed inside. It has been found that an applicable laminated inductance element can be obtained.
【０００６】即ち、本発明は、セラミックス粉末を含有
する磁性体層と、導電体の積層巻線を形成するための銀
の金属粉末を含有する導電体層を印刷法により交互に積
層し、内部に導電体のコイルを形成し、これを同時に焼
結した積層型インダクタンス素子において、前記磁性体
層にＮｉ−Ｃｕ系フェライトとエチルセルロース樹脂と
からなる磁性体を用いたことを特徴とする積層型インダ
クタンス素子である。That is, according to the present invention, a magnetic material layer containing ceramic powder and a conductor layer containing silver metal powder for forming a laminated winding of a conductor are alternately laminated by a printing method to form an internal layer. In a laminated inductance element in which a coil of a conductor is formed and sintered at the same time, a magnetic body made of Ni-Cu based ferrite and ethyl cellulose resin is used for the magnetic body layer. It is an element.
【０００７】又、本発明は、上記積層型インダクタンス
素子において、前記磁性体が主成分として、各々４２＜
ａ＜５０、４０＜ｂ＜４８、４＜ｃ＜８、ａ＋ｂ＋ｃ＝
１００となるａＦｅ2Ｏ3、ｂＮｉＯ、ｃＣｕＯ（ｍｏｌ
％）と、副成分として、各々０〜０.５ｗｔ％（各元素
とも０ｗｔ％を含まない）となるＢｉ2Ｏ3、ＭｎＯ、Ｃ
ｏＯとからなることを特徴とする積層型インダクタンス
素子である。Further, according to the present invention, in the above-mentioned laminated inductance element, the magnetic substance is a main component, and 42 <
a <50, 40 <b <48, 4 <c <8, a + b + c =
AFe 2 O 3 , bNiO, cCuO (mol of 100)
%) And Bi 2 O 3 , MnO, and C as subcomponents of 0 to 0.5 wt% (each element does not include 0 wt%).
and a laminated inductance element.
【０００８】ここで、インダクタンス素子の判断基準と
して本発明で採用した電気特性の評価項目について説明
する。Here, the evaluation items of the electrical characteristics adopted in the present invention as criteria for judging the inductance element will be described.
【０００９】特性の評価は、インダクタンス（Ｌ）の周
波数特性、利得（Ｑ）の周波数特性、素子の温度特性△
ＬT、共振周波数である。The characteristics are evaluated by the frequency characteristic of the inductance (L), the frequency characteristic of the gain (Q), and the temperature characteristic of the element Δ.
LT, the resonance frequency.
【００１０】△ＬTは、２０℃、１００ｋＨｚでのＬの
値を基準とした場合の０から８０℃におけるＬの温度変
化率（％／℃）を示し次式より求められる。 △ＬT＝［（Ｌ８０−ＬＯ）／（Ｌ２０×８０）］×１
００（％／℃） 又、共振周波数は素子のインダクタンスが０になった時
の周波数の値である。ΔLT represents the temperature change rate (% / ° C.) of L from 0 to 80 ° C. with reference to the value of L at 20 ° C. and 100 kHz, and is calculated by the following equation. ΔLT = [(L80−LO) / (L20 × 80)] × 1
00 (% / ° C.) The resonance frequency is the value of the frequency when the inductance of the element becomes zero.
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態を実施例を用
いて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to examples.
【００１２】（実施例１）化学組成比が、ａＦｅ2Ｏ3、
ｂＮｉＯ、ｃＣｕＯ（ｍｏｌ％）＋Ｂｉ2Ｏ3：０.２ｗ
ｔ％・ＣｏＯ：０.２ｗｔ％、ＭｎＯ：０.２ｗｔ％で表
され、ａ＋ｂ＋ｃ＝１００、ａ＝４１、４２、４３、４
４、４５、４６、４７、４８、４９、５０、５１、ｃ＝
６となるように各原料を調製し、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。Example 1 The chemical composition ratio is aFe 2 O 3 ,
bNiO, cCuO (mol%) + Bi 2 O 3 : 0.2w
t% · CoO: 0.2 wt%, MnO: 0.2 wt%, a + b + c = 100, a = 41, 42, 43, 4
4, 45, 46, 47, 48, 49, 50, 51, c =
Each raw material was prepared so as to be 6, and wet-mixed in a ball mill for 20 hours. The raw material powders used here all have a particle size of 0.5 μm or less.
【００１３】次に、これらの原料混合粉末を大気中８０
０℃で２時間仮焼した後、ボールミルにて３時間湿式粉
砕し、スピネル型軟磁性フェライト粉末とした。粉末の
平均粒径は約１μｍである。Next, these raw material mixed powders were mixed with each other in the air at 80
After calcination at 0 ° C. for 2 hours, it was wet pulverized with a ball mill for 3 hours to obtain spinel type soft magnetic ferrite powder. The average particle size of the powder is about 1 μm.
【００１４】この粉末とバインダ、溶剤を表１の比率で
配合し、配合物を三本ロールで混練して磁性体層用ペー
ストを作製した。This powder, a binder, and a solvent were mixed in the ratios shown in Table 1, and the mixture was kneaded with a three-roll to prepare a magnetic layer paste.
【００１５】 [0015]
【００１６】導電体層用粉末として、平均粒径０.５μ
ｍのＡｇ粉末を用意した。この粉末と、表２の比率でバ
インダ、溶剤とそれぞれ配合し、配合物を三本ロールで
混練して、導電体層用ペーストを作製した。The powder for the conductor layer has an average particle size of 0.5 μm.
m Ag powder was prepared. This powder was mixed with a binder and a solvent in the proportions shown in Table 2, and the mixture was kneaded with a three-roll mill to prepare a conductor layer paste.
【００１７】 [0017]
【００１８】本実施例では、表１及び表２の配合比でペ
ーストを作製したが、これ以外の成分配合比でも、印刷
可能なペーストが得られるものであればよい。さらに、
配合物の混練に三本ロールを使用したが、これ以外にも
ホモジェナイザやサンドミル等を使用してもよい。In this embodiment, the paste was prepared with the compounding ratios shown in Tables 1 and 2, but other compounding ratios may be used as long as a printable paste is obtained. further,
Although three rolls were used for kneading the compound, a homogenizer, a sand mill or the like may be used instead.
【００１９】次に、作製した磁性体層用ペーストを印刷
法により所定の厚さ（０.５ｍｍ）に積層した。その上
に、導電体層用ペーストと磁性体層用ペーストを用いて
５.５ターンの導電体の積層巻線を形成するように、印
刷積層を行った。この時、一層の積層厚は、磁性体層で
約３０μｍ、導電体層では約１５μｍで行った。Next, the prepared magnetic layer paste was laminated by printing to a predetermined thickness (0.5 mm). Printing and lamination were performed thereon by using the conductor layer paste and the magnetic layer paste to form a conductor laminated winding of 5.5 turns. At this time, the thickness of one layer was about 30 μm for the magnetic layer and about 15 μm for the conductor layer.
【００２０】その上に、磁性体層用ペーストを印刷法に
より、所定の厚さ（０.５ｍｍ）に積層した。全体の積
層厚さは約１.３ｍｍである。On top of this, a magnetic layer paste was laminated by printing to a predetermined thickness (0.5 mm). The overall stack thickness is about 1.3 mm.
【００２１】本実施例では、導電体の積層巻線を５.５
ターンとしたが、これ以外の巻線でもよく、必要な特性
が得られるように巻線を調整すればよい。In this embodiment, the laminated winding of the conductor is set to 5.5.
Although the winding is described as a turn, a winding other than this may be used, and the winding may be adjusted so as to obtain required characteristics.
【００２２】上記作製した積層体を、所定の大きさに３
ｍｍ×１.５ｍｍに切断した。上記積層、切断した積層
体を脱バインダ後、８５０℃で同時焼成を行った。本実
施例では、８５０℃で焼成を行ったが、積層体が焼結が
完了する温度で、かつ、内部電極が断線しない温度範囲
であればよい。The above-prepared laminated body is formed into a predetermined size 3
It was cut to a size of 1.5 mm × 1.5 mm. After removing the binder from the above laminated and cut laminated body, simultaneous firing was performed at 850 ° C. In the present example, the firing was performed at 850 ° C., but it may be performed at a temperature at which sintering of the laminated body is completed and a temperature range in which the internal electrodes are not broken.
【００２３】又、一つの積層体素子の大きさを３ｍｍ×
１.５ｍｍとしたが、これ以外の大きさでもよく、その
場合、導電体の積層巻線の大きさを調整すればよい。Further, the size of one laminated body element is 3 mm ×
Although it is set to 1.5 mm, other sizes may be used, and in that case, the size of the laminated winding of the conductor may be adjusted.
【００２４】上記焼成した積層インダクタンス素子に、
導電体の積層巻線のリードが露出している面に、Ａｇを
主成分とした導電体層用ペーストを塗布し、約３００℃
で焼き付けを行い、外部電極を形成した。In the fired laminated inductance element,
Apply the conductor layer paste containing Ag as a main component to the surface of the conductor where the leads of the laminated winding are exposed.
Then, baking was performed to form external electrodes.
【００２５】図１に、積層インダクタの構成を示す。図
１（ａ）は積層面からの平面図、図１（ｂ）は断面図で
ある。FIG. 1 shows the structure of the laminated inductor. FIG. 1A is a plan view from the laminated surface, and FIG. 1B is a sectional view.
【００２６】図１に示すように、磁性部１内で、導電体
２が積層巻線されている。又、３は焼成後形成する外部
電極である。As shown in FIG. 1, a conductor 2 is laminated and wound in the magnetic portion 1. Further, 3 is an external electrode formed after firing.
【００２７】本実施例では、外部電極としてＡｇを主成
分とした導電体層用ペーストを用いたが、これ以外に
も、カーボンやＣｕ、Ｎｉ等を主成分とした導電体層用
ペーストでもよい。In the present embodiment, the conductor layer paste containing Ag as a main component was used as the external electrode, but other than this, a conductor layer paste containing carbon, Cu, Ni or the like as a main component may be used. .
【００２８】上記のように作製した積層インダクタンス
素子の利得（Ｑ）の最大値（以下ＱMAXと称す）と１０
０ｋＨｚでのインダクタンス値（以下、Ｌ１００ｋＨｚ
と称す）、インダクタンスの温度特性及び共振周波数を
ＹＨＰ製インピーダンスアナライザーＨＰ４１９１Ａを
用いて評価した。その結果を表３に示す。The maximum value (hereinafter referred to as Q MAX ) of the gain (Q) of the laminated inductance element manufactured as described above and 10
Inductance value at 0 kHz (hereinafter L100 kHz
The temperature characteristics of the inductance and the resonance frequency were evaluated using a YHP impedance analyzer HP4191A. Table 3 shows the results.
【００２９】[0029]
【表３】 [Table 3]
【００３０】表３より、ａ＝４２を下回ると、ＱMAXが
著しく低下し、ａ＝５０を越えると、共振周波数、△Ｌ
Tが著しく低下する。従って、ａ＝４２〜５０が有用な
組成範囲である。From Table 3, when a = 42 or less, Q MAX remarkably decreases, and when a = 50 or more, the resonance frequency, ΔL.
T is significantly reduced. Therefore, a = 42 to 50 is a useful composition range.
【００３１】（実施例２）化学組成比が、ａＦｅ2Ｏ3、
ｂＮｉＯ、ｃＣｕＯ（ｍｏｌ％）＋Ｂｉ2Ｏ3：０.２ｗ
ｔ％・ＣｏＯ：０.２ｗｔ％・ＭｎＯ：０.２ｗｔ％で表
され、但し、ａ＋ｂ＋ｃ＝１００、ｂ＝３９、４０、４
１、４２、４３、４４、４５、４６、４７、４８、４
９、ｃ＝４となるように各原料を調製し、実施例１と同
様に積層型インダクタンス素子を作製した。作製した素
子を実施例１と同様の評価を行った。その結果を表４に
示す。(Example 2) The chemical composition ratio is aFe 2 O 3 ,
bNiO, cCuO (mol%) + Bi 2 O 3 : 0.2w
t% · CoO: 0.2 wt% · MnO: 0.2 wt%, provided that a + b + c = 100, b = 39, 40, 4
1, 42, 43, 44, 45, 46, 47, 48, 4
9, each raw material was prepared so that c = 4, and a laminated inductance element was manufactured in the same manner as in Example 1. The produced device was evaluated in the same manner as in Example 1. Table 4 shows the results.
【００３２】[0032]
【表４】 [Table 4]
【００３３】表４より、ｂ＝４０〜４８の範囲を越える
と△ＬTが著しく大きくなることを示している。従っ
て、ｂ＝４０〜４８の範囲が有用な組成範囲である。Table 4 shows that ΔL T becomes remarkably large when the range of b = 40 to 48 is exceeded. Therefore, the range of b = 40 to 48 is a useful composition range.
【００３４】（実施例３）化学組成比が、ａＦｅ2Ｏ3、
ｂＮｉＯ、ｃＣｕＯ（ｍｏｌ％）＋Ｂｉ2Ｏ3：０.２ｗ
ｔ％・ＣｏＯ：０.２ｗｔ％・ＭｎＯ：０.２ｗｔ％で表
され、但し、ａ＋ｂ＋ｃ＝１００、ｂ＝４６、ｃ＝３、
４、５、６、７、８、９となるように各原料を調製し、
実施例１と同様に積層型インダクタンス素子を作製し
た。作製した素子を実施例１と同様の評価を行った。そ
の結果を表５に示す。Example 3 The chemical composition ratio is aFe 2 O 3 ,
bNiO, cCuO (mol%) + Bi 2 O 3 : 0.2w
t% · CoO: 0.2 wt% · MnO: 0.2 wt%, provided that a + b + c = 100, b = 46, c = 3,
Prepare each material so that it becomes 4, 5, 6, 7, 8, and 9,
A laminated inductance element was produced in the same manner as in Example 1. The produced device was evaluated in the same manner as in Example 1. Table 5 shows the results.
【００３５】 [0035]
【００３６】表５より、ｃ＝４〜８の範囲を越えると△
ＬTが著しく大きくなることを示している。さらに、ｃ
＞８では、共振周波数が低下する。従って、ｃ＝４〜８
の範囲が有用な組成範囲である。According to Table 5, when c = 4 to 8 is exceeded, Δ
It shows that LT is significantly increased. Furthermore, c
At> 8, the resonance frequency decreases. Therefore, c = 4 to 8
Is a useful composition range.
【００３７】（実施例４）化学組成比が、４８Ｆｅ
2Ｏ3、ｂＮｉＯ、ｃＣｕＯ（ｍｏｌ％）＋ｄＢｉ2Ｏ3・
ＣｏＯ：０.２ｗｔ％・ＣｏＯ：０.２ｗｔ％・ＭｎＯ：
０.２ｗｔ％で表され、但し、ａ＋ｂ＋ｃ＝１００、ａ
＝４８、ｂ＝４６、ｃ＝６、ｄ＝０、０.０１、０.０
５、０.１、０.２、０.３、０.４、０.５、０.６ｗｔ％
となるように各原料を調製し、実施例１と同様に積層型
インダクタンス素子を作製した。作製した素子を実施例
１と同様の評価を行った。その結果を表６に示す。(Example 4) The chemical composition ratio was 48Fe.
2 O 3 , bNiO, cCuO (mol%) + dBi 2 O 3 ·
CoO: 0.2 wt%, CoO: 0.2 wt%, MnO:
It is represented by 0.2 wt%, where a + b + c = 100, a
= 48, b = 46, c = 6, d = 0, 0.01, 0.0
5, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 wt%
The respective raw materials were prepared so as to obtain the laminated inductance element in the same manner as in Example 1. The produced device was evaluated in the same manner as in Example 1. Table 6 shows the results.
【００３８】[0038]
【表６】 [Table 6]
【００３９】表６より、ｄ＝０の場合は、ＱMAX及び△
ＬTが低い。ｄ＞０ではＱMAXが向上し、さらに、△ＬT
も向上するが、ｄ＝０.５を越えると、ＱMAXは、さらに
向上するが、共振周波数が低下する。従ってｄ＝０〜
０.５（０は含まない）の範囲が有用な組成範囲であ
る。From Table 6, when d = 0, Q MAX and Δ
L T is low. When d> 0, Q MAX improves, and ΔLT
However, when d = 0.5 is exceeded, Q MAX is further improved, but the resonance frequency is lowered. Therefore d = 0
The range of 0.5 (excluding 0) is a useful composition range.
【００４０】（実施例５）化学組成比が、ａＦｅ2Ｏ3、
ｂＮｉＯ、ｃＣｕＯ（ｍｏｌ％）＋Ｂｉ2Ｏ3：０.２ｗ
ｔ％・ｅＣｏＯ・ＭｎＯ：０.２ｗｔ％で表され、但
し、ａ＋ｂ＋ｃ＝１００、ａ＝４８、ｂ＝４６、ｃ＝
６、ｅ＝０、０.０１、０.０５、０.１、０.２、０.
３、０.４、０.５、０.６ｗｔ％となるように各原料を
調製し、実施例１と同様に積層型インダクタンス素子を
作製した。作製した素子を実施例１と同様の評価を行っ
た。その結果を表７に示す。Example 5 The chemical composition ratio is aFe 2 O 3 ,
bNiO, cCuO (mol%) + Bi 2 O 3 : 0.2w
t% · eCoO · MnO: Represented by 0.2 wt%, provided that a + b + c = 100, a = 48, b = 46, c =
6, e = 0, 0.01, 0.05, 0.1, 0.2, 0.0.
The respective raw materials were prepared so as to be 3, 0.4, 0.5, and 0.6 wt%, and a laminated inductance element was manufactured in the same manner as in Example 1. The produced device was evaluated in the same manner as in Example 1. Table 7 shows the results.
【００４１】[0041]
【表７】 [Table 7]
【００４２】表７より、ｅ＝０の場合はＱMAXが低い。
ｅ＞０ではＱMAXが向上し、さらに共振周波数が高周波
帯域まで向上するが、ｄ＝０.５を越えると、△ＬTが著
しく低下する。従って、ｅ＝０〜０.５（０は含まな
い）の範囲が有用な組成範囲である。From Table 7, when e = 0, Q MAX is low.
When e> 0, Q MAX is improved and the resonance frequency is further improved to a high frequency band. However, when d = 0.5 is exceeded, ΔLT is significantly reduced. Therefore, the range of e = 0 to 0.5 (0 is not included) is a useful composition range.
【００４３】（実施例６）化学組成比が、ａＦｅ2Ｏ3、
ｂＮｉＯ、ｃＣｕＯ（ｍｏｌ％）＋Ｂｉ2Ｏ3：０.２ｗ
ｔ％・ＣｏＯ：０.２ｗｔ％・ｆＭｎＯ：０.２ｗｔ％で
表され、但し、ａ＋ｂ＋ｃ＝１００、ａ＝４８、ｂ＝４
６、ｃ＝６、ｆ＝０、０.０１、０.０５、０.１、０.
２、０.３、０.４、０.５、０.６ｗｔ％となるように各
原料を調製し、実施例１と同様に積層型インダクタンス
素子を作製した。作製した素子を実施例１と同様の評価
を行った。その結果を表８に示す。Example 6 The chemical composition ratio is aFe 2 O 3 ,
bNiO, cCuO (mol%) + Bi 2 O 3 : 0.2w
t% / CoO: 0.2 wt% / fMnO: 0.2 wt%, provided that a + b + c = 100, a = 48, b = 4
6, c = 6, f = 0, 0.01, 0.05, 0.1, 0.0.
The respective raw materials were prepared so that the amounts were 2, 0.3, 0.4, 0.5, and 0.6 wt%, and a laminated inductance element was manufactured in the same manner as in Example 1. The produced device was evaluated in the same manner as in Example 1. Table 8 shows the results.
【００４４】[0044]
【表８】 [Table 8]
【００４５】表８より、ｆ＞０でＱMAXが向上するが、
添加量がｄ＝０.５を越えると、逆に、ＱMAXが低下す
る。従って、ｄ＝０〜０.５（０は含まない）の範囲が
有用な組成範囲である。[0045] From Table 8, but Q MAX is improved at f> 0,
On the contrary, when the addition amount exceeds d = 0.5, Q MAX decreases. Therefore, the range of d = 0 to 0.5 (0 is not included) is a useful composition range.
【００４６】（実施例７）化学組成比は、主成分が４８
Ｆｅ2Ｏ3−４６Ｎｉ−６ＣｕＯであり、添加物として、
Ｂｉ2Ｏ3：０.１ｗｔ％・ＣｏＯ：０.３ｗｔ％・Ｍｎ
Ｏ：０.２ｗｔ％を各々添加した粉末を使用し、実施例
１と同様に、積層型インダクタンス素子を作製した。(Embodiment 7) The chemical composition ratio is such that the main component is 48
A Fe 2 O 3 -46Ni-6CuO, as additives,
Bi 2 O 3 : 0.1 wt% CoO: 0.3 wt% Mn
A laminated inductance element was manufactured in the same manner as in Example 1 using powders to which O: 0.2 wt% was added.
【００４７】作製した積層型インダクタンス素子の周波
数とＬ及びＱの関係を図２に示し、共振周波数を表９に
示す。なお、図２及び表９中には、比較例として、磁性
部は実施例と同じスピネル系Ｎｉ−Ｃｕ−Ｚｎフェライ
トを用いて作製した積層インダクタンス素子の周波数と
Ｌ及びＱの関係と共振周波数を示す。The relationship between the frequency and L and Q of the manufactured laminated inductance element is shown in FIG. 2, and the resonance frequency is shown in Table 9. In addition, in FIG. 2 and Table 9, as a comparative example, the magnetic part shows the relationship between the frequency, the relationship between L and Q, and the resonance frequency of the laminated inductance element manufactured using the same spinel Ni-Cu-Zn ferrite as that of the example. Show.
【００４８】 [0048]
【００４９】図２より、本実施例で示した組成範囲の磁
性部用ペーストを用いることにより、実効透磁率が若干
低下し、よって、インダクタンスＬも低下するが、１０
０ＭＨｚ以上までは、Ｌがフラットな特性を示し、又、
Ｑピークを示す周波数帯域も１００ＭＨｚ以上に到着し
ており、さらに、ＱMAXも従来の積層型インダクタンス
素子より高く、従って、広い周波帯域で適用できる積層
型インダクタンス素子であることがわかった。又、表９
からもわかるように、共振周波数も高い周波数域である
ことがわかった。From FIG. 2, by using the paste for the magnetic portion having the composition range shown in this embodiment, the effective magnetic permeability is slightly lowered, and the inductance L is also lowered, but 10
Up to 0MHz, L shows a flat characteristic, and
The frequency band showing the Q peak has also reached 100 MHz or more, and Q MAX is also higher than that of the conventional laminated inductance element. Therefore, it was found that the laminated inductance element can be applied in a wide frequency band. Also, Table 9
As can be seen from the above, it was found that the resonance frequency is also in a high frequency range.
【００５０】[0050]
【発明の効果】以上、述べたように、本発明によれば、
高周波帯域でのインダクタンス及びＱ特性に優れ、広い
周波数帯域での適用が可能な積層型インダクタンス素子
が得られる。As described above, according to the present invention,
It is possible to obtain a laminated inductance element that has excellent inductance and Q characteristics in a high frequency band and can be applied in a wide frequency band.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本実施例の積層インダクタの構成を示す図。図
１（ａ）は平面図。図１（ｂ）は断面図。FIG. 1 is a diagram showing a configuration of a laminated inductor of this embodiment. FIG. 1A is a plan view. FIG. 1B is a sectional view.
【図２】実施例７の積層型インダクタンス素子と比較例
の積層型インダクタンス素子の周波数とＬ、及びＱの関
係を示す図。図２（ａ）は、周波数とＱの関係を示す
図。図２（ｂ）は、周波数とＬの関係を示す図。FIG. 2 is a diagram showing a relationship between frequencies, L, and Q of a laminated inductance element of Example 7 and a laminated inductance element of a comparative example. FIG. 2A is a diagram showing the relationship between frequency and Q. FIG. 2B is a diagram showing the relationship between frequency and L.
１ 磁性体 ２ 導電体 ３ 外部電極 Ａ 実施例７ Ｂ 比較例 1 Magnetic Material 2 Conductor 3 External Electrode A Example 7 B Comparative Example
Claims (2)
と、導電体の積層巻線を形成するための銀の金属粉末を
含有する導電体層を印刷法により交互に積層し、内部に
導電体のコイルを形成し、これを同時に焼結した積層型
インダクタンス素子において、前記磁性体層にＮｉ−Ｃ
ｕ系フェライトとエチルセルロース樹脂とからなる磁性
体を用いたことを特徴とする積層型インダクタンス素
子。1. A magnetic material layer containing a ceramic powder and a conductor layer containing a silver metal powder for forming a laminated winding of a conductor are alternately laminated by a printing method, and a conductor layer is formed inside the conductor layer. In a laminated inductance element in which a coil is formed and is sintered at the same time, a Ni-C layer is formed on the magnetic layer.
A laminated inductance element using a magnetic material made of u-based ferrite and ethyl cellulose resin.
子において、前記磁性体が主成分として、各々４２＜ａ
＜５０、４０＜ｂ＜４８、４＜ｃ＜８、ａ＋ｂ＋ｃ＝１
００となるａＦｅ2Ｏ3、ｂＮｉＯ、ｃＣｕＯ（ｍｏｌ
％）と、副成分として、各々０〜０.５ｗｔ％（各元素
とも０ｗｔ％を含まない）となるＢｉ2Ｏ3、ＭｎＯ、Ｃ
ｏＯとからなることを特徴とする積層型インダクタンス
素子。2. The laminated inductance element according to claim 1, wherein the magnetic substance is a main component, and 42 <a.
<50, 40 <b <48, 4 <c <8, a + b + c = 1
AFe 2 O 3 , bNiO, cCuO (mol
%) And Bi 2 O 3 , MnO, and C as subcomponents of 0 to 0.5 wt% (each element does not include 0 wt%).
and a laminated inductance element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7296077A JP3035479B2 (en) | 1995-10-18 | 1995-10-18 | Multilayer inductance element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7296077A JP3035479B2 (en) | 1995-10-18 | 1995-10-18 | Multilayer inductance element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09115730A true JPH09115730A (en) | 1997-05-02 |
| JP3035479B2 JP3035479B2 (en) | 2000-04-24 |
Family
ID=17828827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7296077A Expired - Fee Related JP3035479B2 (en) | 1995-10-18 | 1995-10-18 | Multilayer inductance element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3035479B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2362155A (en) * | 2000-05-12 | 2001-11-14 | Murata Manufacturing Co | Laminated electronic component |
| JP2008288332A (en) * | 2007-05-16 | 2008-11-27 | Tdk Corp | Ferrite paste and method of manufacturing laminated ceramic component |
-
1995
- 1995-10-18 JP JP7296077A patent/JP3035479B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2362155A (en) * | 2000-05-12 | 2001-11-14 | Murata Manufacturing Co | Laminated electronic component |
| GB2362155B (en) * | 2000-05-12 | 2002-09-04 | Murata Manufacturing Co | Laminated electronic component |
| US6492733B2 (en) | 2000-05-12 | 2002-12-10 | Murata Manufacturing Co., Ltd. | Laminated electronic component |
| JP2008288332A (en) * | 2007-05-16 | 2008-11-27 | Tdk Corp | Ferrite paste and method of manufacturing laminated ceramic component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3035479B2 (en) | 2000-04-24 |
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