JPH0620217A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPH0620217A JPH0620217A JP17655092A JP17655092A JPH0620217A JP H0620217 A JPH0620217 A JP H0620217A JP 17655092 A JP17655092 A JP 17655092A JP 17655092 A JP17655092 A JP 17655092A JP H0620217 A JPH0620217 A JP H0620217A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- core
- magnetic core
- film
- gap
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、固定型磁気ディスク装
置などに使用される浮動型の磁気ヘッドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating type magnetic head used in a fixed type magnetic disk device or the like.
【０００２】[0002]
【従来の技術】コンピューターの補助記憶装置である磁
気ディスク装置は、小型化、高容量化の技術開発が積極
的に行なわれている。磁気ディスク装置の主要部品のひ
とつである磁気記録媒体では、高保磁力化や、薄膜化の
技術が進み、短波長域での信号の記録、再生を可能にし
ている。2. Description of the Related Art A magnetic disk device, which is an auxiliary storage device for a computer, has been actively developed for miniaturization and high capacity. In the magnetic recording medium, which is one of the main components of the magnetic disk device, the technology of high coercive force and thinning has been advanced to enable signal recording / reproduction in a short wavelength region.
【０００３】一方磁気ヘッドでは、高保磁力を有する磁
気記録媒体に飽和記録するために高い飽和磁束密度を有
するＦｅ−Ａｌ−Ｓｉ合金やアモルファス合金などの金
属磁性材料で磁気ギャップ近傍を形成するメタル・イン
・ギャップタイプの磁気ヘッドが主流になりつつある。On the other hand, in a magnetic head, in order to perform saturation recording on a magnetic recording medium having a high coercive force, a metal magnetic material having a high saturation magnetic flux density, such as a Fe--Al--Si alloy or an amorphous alloy, which forms the vicinity of the magnetic gap, In-gap type magnetic heads are becoming mainstream.
【０００４】以下に従来の磁気ヘッドについて説明す
る。図３に示すように、Ｍｎ−Ｚｎフェライトなどの第
１磁性コア２にダイヤモンド砥石などにより巻線溝３を
形設した後、磁束を集中させる働きのある巻線溝３の斜
面４を鏡面に加工する。次に第１磁性コア２およびＭｎ
−Ｚｎフェライトなどの第２磁性コア５のギャップの形
成面を鏡面に加工した後、スパッタリングなどの真空薄
膜形成技術によりＦｅ−Ａｌ−Ｓｉ合金などの膜厚１〜
８μｍの磁性膜１を少なくとも電磁変換動作をするフロ
ントギャップ部７に形設する。A conventional magnetic head will be described below. As shown in FIG. 3, after the winding groove 3 is formed on the first magnetic core 2 such as Mn-Zn ferrite with a diamond grindstone or the like, the slope 4 of the winding groove 3 having a function of concentrating the magnetic flux is made into a mirror surface. To process. Next, the first magnetic core 2 and Mn
After the gap forming surface of the second magnetic core 5 such as -Zn ferrite is processed into a mirror surface, the film thickness of Fe-Al-Si alloy or the like is 1 to 1 by a vacuum thin film forming technique such as sputtering.
The magnetic film 1 having a thickness of 8 μm is formed at least in the front gap portion 7 that performs electromagnetic conversion operation.
【０００５】なお、フロントギャップ部７はＳｉＯ2ま
たはガラスなどのギャップ材で形成されている。The front gap portion 7 is made of a gap material such as SiO 2 or glass.
【０００６】次に作動ギャップとなるＳｉＯ2などの非
磁性材を介して第１磁性コア２と第２磁性コア５を対向
させ、巻線溝３のフロントギャップ部７側をガラス６で
溶融接合して磁気ヘッドのコアチップを形成する。Next, the first magnetic core 2 and the second magnetic core 5 are opposed to each other through a non-magnetic material such as SiO 2 which becomes an operation gap, and the front gap portion 7 side of the winding groove 3 is melt-bonded with glass 6. Then, the core chip of the magnetic head is formed.
【０００７】図中の８は第１磁性コア２と第２磁性コア
５で形成するリアギャップ部を示す。Reference numeral 8 in the drawing denotes a rear gap portion formed by the first magnetic core 2 and the second magnetic core 5.
【０００８】図４に示すように、記録能力を向上させる
ために磁性膜１を第１磁性コア２と第２磁性コア５の両
方に形設して、図３で説明したようにして形成した磁気
ヘッドのコアチップもある。As shown in FIG. 4, the magnetic film 1 is formed on both the first magnetic core 2 and the second magnetic core 5 in order to improve the recording ability, and is formed as described in FIG. There are also core chips for magnetic heads.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら上記の従
来の構成では、リアギャップ部８にも磁性膜１が存在す
るので、第１磁性コア２と第２磁性コア５の接着強度が
弱くなり歩留りが悪化するという問題点、また、電気抵
抗の低い磁性膜１がリアギャップ部８の全体にあるので
高い周波数では透磁率の劣化により再生能力が劣るとい
う問題点を有していた。However, in the above-mentioned conventional structure, since the magnetic film 1 is also present in the rear gap portion 8, the adhesive strength between the first magnetic core 2 and the second magnetic core 5 is weakened and the yield is increased. There is a problem in that the magnetic film 1 is deteriorated, and since the magnetic film 1 having a low electric resistance is present in the entire rear gap portion 8, the reproducing capability is deteriorated at a high frequency due to deterioration in magnetic permeability.
【００１０】本発明は上記従来の問題点を解決するもの
で、第１磁性コアと第２磁性コアの接着強度が強く、か
つ、電気特性の劣化のない磁気ヘッドを提供することを
目的とする。The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a magnetic head in which the adhesion strength between the first magnetic core and the second magnetic core is high and the electrical characteristics are not deteriorated. .
【００１１】[0011]
【課題を解決するための手段】この目的を達成するため
に本発明の磁気ヘッドは、リアギャップ部には磁性膜が
なく、フロントギャップ部の磁性膜を必要最小限に形設
し、ギャップの対向面にフェライト面を露出させた構成
としたものである。In order to achieve this object, the magnetic head of the present invention does not have a magnetic film in the rear gap portion, and the magnetic film in the front gap portion is formed to the required minimum, The structure is such that the ferrite surface is exposed on the facing surface.
【００１２】[0012]
【作用】この構成において、第１磁性コアと第２磁性コ
アの接着強度を弱める磁性膜が少なくなり、フェライト
での接着面を多くして、接着強度を強くすることとな
る。In this structure, the magnetic film that weakens the adhesive strength between the first magnetic core and the second magnetic core is reduced, and the adhesive surface of ferrite is increased to enhance the adhesive strength.
【００１３】[0013]
【実施例】以下本発明の一実施例について、図面を参照
しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１４】本発明の一実施例を示す図１および図２で
は、従来例と同一部品に同一番号を付して説明は省略す
る。In FIGS. 1 and 2 showing an embodiment of the present invention, the same parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.
【００１５】本実施例の特徴とするところは、前述従来
の構成に第１磁性コア２および第２磁性コア５の対向面
の全面でなく、一部に磁性膜を形設したことにある。The feature of this embodiment resides in that the magnetic film is formed on a part of the facing structure of the first magnetic core 2 and the second magnetic core 5 instead of the entire surface in the conventional structure.
【００１６】すなわち、図１に示すように、第１磁性コ
ア２には、その巻線溝３の斜面４のフロントギャップ部
７側の一部にＣコア磁性膜１１を形設し、第２磁性コア
５には、そのフロントギャップ７側の一部にＩコア磁性
膜１２を形設した構成である。That is, as shown in FIG. 1, in the first magnetic core 2, a C core magnetic film 11 is formed in a part of the slope 4 of the winding groove 3 on the side of the front gap portion 7, and the second magnetic core 2 is formed. In the magnetic core 5, an I-core magnetic film 12 is formed on a part of the magnetic core 5 on the front gap 7 side.
【００１７】以下にＣコア磁性膜１１およびＩコア磁性
膜１２の形成方法について説明する。A method of forming the C core magnetic film 11 and the I core magnetic film 12 will be described below.
【００１８】図２（ａ）に示すように、第１磁性コア２
に、ダイヤモンド砥石などにより巻線溝３とフロントギ
ャップ部に必要最小限の磁性膜を形設させる所定寸法の
磁性膜溝９を形成する。また、第２磁性コア５に同じく
ダイヤモンド砥石などによりフロントギャップ部に必要
最小限の磁性膜を形設させる所定寸法の磁性膜溝１０を
形成する。As shown in FIG. 2A, the first magnetic core 2
Then, a magnetic film groove 9 having a predetermined size for forming a minimum required magnetic film in the winding groove 3 and the front gap portion is formed by a diamond grindstone or the like. Further, a magnetic film groove 10 of a predetermined size is formed in the second magnetic core 5 by using a diamond grindstone or the like so as to form a minimum required magnetic film in the front gap portion.
【００１９】ついで図２（ｂ）に示すように、第１磁性
コア２と第２磁性コア５の対向面をリン酸などでエッチ
ング処理した後、スパッタリングなどの真空薄膜形成技
術によりＦｅ−Ａｌ−Ｓｉ合金またはＦｅ−Ｎｉ合金な
どの高飽和磁束密度を有する膜厚が５〜１０μｍの磁性
膜１１ａ，１２ａを第１磁性コア２と第２磁性コア５
に、各対向面と直角方向からスパッタリングして形設す
る。その後、磁性膜１１ａ，１２ａの透磁率が向上する
温度条件で熱処理を行なう。Then, as shown in FIG. 2B, the facing surfaces of the first magnetic core 2 and the second magnetic core 5 are etched with phosphoric acid or the like, and then Fe-Al- is formed by a vacuum thin film forming technique such as sputtering. The first magnetic core 2 and the second magnetic core 5 are formed of the magnetic films 11a and 12a having a high saturation magnetic flux density and a film thickness of 5 to 10 μm, such as Si alloy or Fe—Ni alloy.
Then, it is formed by sputtering from a direction perpendicular to each facing surface. After that, heat treatment is performed under a temperature condition in which the magnetic permeability of the magnetic films 11a and 12a is improved.
【００２０】ついで、図２（ｃ）に示すように、第１磁
性コア２と第２磁性コア５のギャップの対向面を、ダイ
ヤモンド砥粒を用いたラッピング加工などにより鏡面に
加工する。このラッピング加工によりギャップの対向面
に成膜された磁性膜１１ａ，１２ａは除去され、巻線溝
３と磁性膜溝９，１０の部分にのみ磁性膜１１ａ，１２
ａが残る。Then, as shown in FIG. 2C, the opposing surfaces of the gap between the first magnetic core 2 and the second magnetic core 5 are mirror-finished by lapping using diamond abrasive grains. The magnetic films 11a and 12a formed on the opposing surfaces of the gap are removed by this lapping process, and the magnetic films 11a and 12 are formed only on the winding groove 3 and the magnetic film grooves 9 and 10.
a remains.
【００２１】ついで、図２（ｄ）に示すように、第１磁
性コア２の巻線溝３を加工して砥粒径の小さいダイヤモ
ンド砥石などにより鏡面に仕上げて斜面４を形成する。Then, as shown in FIG. 2D, the winding groove 3 of the first magnetic core 2 is processed and mirror-finished with a diamond grindstone having a small abrasive grain size to form a slope 4.
【００２２】さらに、巻線溝３の幅よりやや大きい寸法
の砥石で巻線溝３の部分を加工して残っている、磁性膜
１１ａを除去し、磁性膜溝９，１０以外の対向面にフェ
ライト面を露出させる。Furthermore, the remaining magnetic film 11a is removed by processing the portion of the winding groove 3 with a grindstone having a size slightly larger than the width of the winding groove 3, and the remaining surface other than the magnetic film grooves 9 and 10 is removed. Expose the ferrite surface.
【００２３】ついで図２（ｅ）に示すように、ギャップ
の形成面にＳｉＯ2または、ガラスなどを真空薄膜形成
手段によりギャップ長と同等寸法のギャップ材１４を第
１磁性コア２と第２磁性コア５に形設し、対向面を組合
せてギャップ部を形成し加圧保持する。Then, as shown in FIG. 2 (e), a gap material 14 having the same size as the gap length is formed on the gap forming surface by vacuum thin film forming means such as SiO 2 or glass. The core 5 is formed, and the opposing surfaces are combined to form a gap portion, which is held under pressure.
【００２４】この状態で巻線溝３に接着のガラス材を挿
入し、フロントギャップ７を下側にして、電気炉で７０
０℃前後で溶融させ第１磁性コア２と第２磁性コア５を
ガラス６で接着する。In this state, an adhesive glass material is inserted into the winding groove 3 and the front gap 7 is set to the lower side.
It is melted at around 0 ° C. and the first magnetic core 2 and the second magnetic core 5 are bonded with glass 6.
【００２５】ついで、図２（ｆ）に示すように、記録媒
体の走行面１３をダイヤモンド砥石などを用いた研削加
工やラッピング加工により、第１磁性コア２側の磁性膜
１１ａの一部が露出するまで接着した第１磁性コア２と
第２磁性コア５を加工して、Ｃコア磁性膜１１とＩコア
磁性膜１２を有するコアチップを形成する。Then, as shown in FIG. 2F, a part of the magnetic film 11a on the first magnetic core 2 side is exposed by grinding or lapping the running surface 13 of the recording medium using a diamond grindstone or the like. The first magnetic core 2 and the second magnetic core 5 that have been adhered until are processed to form a core chip having a C core magnetic film 11 and an I core magnetic film 12.
【００２６】このとき、Ｃコア磁性膜１１の幅寸法を規
制することで、記録媒体の走行面１３側から、ギャップ
長を確認することができるので、作業性や歩留りが良化
できる。At this time, by controlling the width dimension of the C core magnetic film 11, the gap length can be confirmed from the running surface 13 side of the recording medium, so that workability and yield can be improved.
【００２７】以上のように本実施例によれば、第１磁性
コア２と第２磁性コア５の対向面でＣコア磁性膜１１と
Ｉコア磁性膜１２との接着面を極めて少なくできる。リ
アギャップ部８の磁性膜１１ａ，１２ａは除去され、か
つ、フロントギャップ部７においては、磁性膜溝９，１
０を設けて第１磁性コア２と第２磁性コア５の対向面を
ダイヤモンド砥粒によってラッピング加工することで、
磁性膜１１ａ，１２ａを除去してフロントギャップ部７
に必要最小限のＣコア磁性膜１１とＩコア磁性膜１２を
形設した構成により、第１磁性コア２と第２磁性コア５
の接着強度を著しく向上できる。As described above, according to this embodiment, the bonding surface between the C core magnetic film 11 and the I core magnetic film 12 on the facing surface of the first magnetic core 2 and the second magnetic core 5 can be extremely reduced. The magnetic films 11a and 12a of the rear gap part 8 are removed, and in the front gap part 7, the magnetic film grooves 9 and 1a are removed.
By providing 0 and lapping the facing surfaces of the first magnetic core 2 and the second magnetic core 5 with diamond abrasive grains,
The front gap portion 7 is formed by removing the magnetic films 11a and 12a.
The minimum required C core magnetic film 11 and I core magnetic film 12 are formed, so that the first magnetic core 2 and the second magnetic core 5 are formed.
The adhesive strength of can be remarkably improved.
【００２８】[0028]
【発明の効果】以上の実施例の説明からも明らかなよう
に本発明は、リアギャップ部には磁性膜がなく、フロン
トギャップ部の磁性膜を必要最小限に形設し、ギャップ
の対向面にフェライト面を露出させた構成により、第１
磁性コアと第２磁性コアの接着強度が強く、かつ、特性
の劣化のない優れた磁気ヘッドを実現できるものであ
る。As is apparent from the above description of the embodiments, the present invention does not have a magnetic film in the rear gap portion, and the magnetic film in the front gap portion is formed to the necessary minimum, and the opposing surface of the gap is formed. With the structure in which the ferrite surface is exposed on the
It is possible to realize an excellent magnetic head in which the adhesive strength between the magnetic core and the second magnetic core is strong and the characteristics are not deteriorated.
【図１】本発明の一実施例の磁気ヘッドのコアチップの
外観斜視図FIG. 1 is an external perspective view of a core chip of a magnetic head according to an embodiment of the present invention.
【図２】同磁気ヘッドのコアチップの形成方法の工程順
の断面図2A to 2C are cross-sectional views in the order of steps of a method of forming a core chip of the magnetic head.
【図３】従来の磁気ヘッドのコアチップの外観斜視図FIG. 3 is an external perspective view of a core chip of a conventional magnetic head.
【図４】従来の他の磁気ヘッドのコアチップの外観斜視
図FIG. 4 is an external perspective view of a core chip of another conventional magnetic head.
２ 第１磁性コア ５ 第２磁性コア ６ ガラス ７ フロントギャップ部 １１ Ｃコア磁性膜（磁性膜） １２ Ｉコア磁性膜（磁性膜） 2 1st magnetic core 5 2nd magnetic core 6 Glass 7 Front gap part 11 C core magnetic film (magnetic film) 12 I core magnetic film (magnetic film)
Claims (1)
磁性コアの対向する表面に形設した磁性膜の上に磁気ギ
ャップとなるギャップ材を形設し、前記磁気ギャップを
ガラスで接合したメタル・イン・ギャップタイプの磁気
ヘッドであって、前記第１磁性コアと前記第２磁性コア
のフロントギャップ部にのみ必要最小限に形設した前記
磁性膜を備えた磁気ヘッド。1. A pair of a first magnetic core and a second ferrite core.
A magnetic head of a metal-in-gap type in which a gap material serving as a magnetic gap is formed on a magnetic film formed on opposite surfaces of a magnetic core, and the magnetic gap is joined by glass. A magnetic head comprising the magnetic film formed in a minimum necessary amount only in the front gap portion of the magnetic core and the second magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17655092A JPH0620217A (en) | 1992-07-03 | 1992-07-03 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17655092A JPH0620217A (en) | 1992-07-03 | 1992-07-03 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0620217A true JPH0620217A (en) | 1994-01-28 |
Family
ID=16015547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17655092A Pending JPH0620217A (en) | 1992-07-03 | 1992-07-03 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0620217A (en) |
-
1992
- 1992-07-03 JP JP17655092A patent/JPH0620217A/en active Pending
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