JPH06111237A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPH06111237A JPH06111237A JP25439092A JP25439092A JPH06111237A JP H06111237 A JPH06111237 A JP H06111237A JP 25439092 A JP25439092 A JP 25439092A JP 25439092 A JP25439092 A JP 25439092A JP H06111237 A JPH06111237 A JP H06111237A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- metal film
- apex portion
- magnetic head
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 42
- 239000013078 crystal Substances 0.000 claims abstract description 4
- 239000010408 film Substances 0.000 description 39
- 238000000034 method Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 239000000696 magnetic material Substances 0.000 description 4
- 229910000702 sendust Inorganic materials 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000001513 hot isostatic pressing Methods 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Magnetic Heads (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、磁気ディスク等の磁気
記録媒体に対して相対移動しながら情報の記録・再生・
消去等を行う磁気ヘッドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to recording / reproducing / information of information while moving relative to a magnetic recording medium such as a magnetic disk.
The present invention relates to a magnetic head that erases data.
【０００２】[0002]
【従来の技術】一般に、コンピュータ等の磁気記録装置
であるフレキシブル磁気ディスクドライブ（ＦＤＤ），
ハードディスクドライブ（ＨＤＤ）等には、情報の記録
・再生・消去等を行うためにギャップ対向面に金属膜を
用いたＭＩＧヘッドと称される磁気ヘッドが利用されて
いる。2. Description of the Related Art Generally, a flexible magnetic disk drive (FDD), which is a magnetic recording device for a computer or the like,
In hard disk drives (HDD) and the like, magnetic heads called MIG heads that use a metal film on the gap facing surface are used to record, reproduce, and erase information.
【０００３】以下、このような従来からあるＭＩＧヘッ
ドと称される磁気ヘッドを図３により説明する。Hereinafter, such a conventional magnetic head called a MIG head will be described with reference to FIG.
【０００４】図３は、従来からある磁気ヘッドの要部を
示す縦断面図である。FIG. 3 is a longitudinal sectional view showing a main part of a conventional magnetic head.
【０００５】この種の磁気ヘッド１は、熱間静水圧プレ
ス処理が施された多結晶Ｍｎ−Ｚｎフェライト等の焼結
フェライト等からなる磁性部材２を素材とし、リーディ
ング側の磁性部材２ａとトレーリング側の磁性部材２ｂ
とにより形成されている。そして、前記リーディング側
の磁性部材２ａのトレーリング側の磁性部材２ｂと対向
する面には、アペックス部（傾斜部）３を有する略コの
字形状の巻線窓４が形成されている。This type of magnetic head 1 is made of a magnetic member 2 made of sintered ferrite or the like such as polycrystalline Mn-Zn ferrite which has been subjected to hot isostatic pressing, and is made of a magnetic material 2a on the leading side and a tray. Ring side magnetic member 2b
It is formed by and. A substantially U-shaped winding window 4 having an apex portion (inclined portion) 3 is formed on the surface of the leading-side magnetic member 2a facing the trailing-side magnetic member 2b.
【０００６】また、前記リーディング側の磁性部材２ａ
の巻線窓４を形成した面と、トレーリング側の磁性部材
２ｂとには、スパッタリング法等の薄膜形成法によって
相互に対向する面にセンダスト（Ｆｅ−Ａｌ−Ｓｉ）等
からなる金属膜５が形成されてギャップ対向面６とされ
ている。そして、前記金属膜５が形成されたギャップ対
向面６にガラス（ＳｉＯ2 ）等のギャップ部材７を付着
させ、相互に対向させるように突き合わせて、高温加圧
状態でギャップ部材７を溶融させることにより接合する
とともに、所望のギャップ８が形成されている。さら
に、トレーリング側の磁性部材２ｂには、巻線９が巻回
されている。The leading side magnetic member 2a
Of the surface on which the winding window 4 is formed and the magnetic member 2b on the trailing side are opposed to each other by a thin film forming method such as a sputtering method, and a metal film 5 made of sendust (Fe-Al-Si) or the like. Are formed to serve as the gap facing surface 6. Then, a gap member 7 made of glass (SiO 2 ) or the like is attached to the gap facing surface 6 on which the metal film 5 is formed, and they are abutted so as to face each other, and the gap member 7 is melted under high temperature and pressure. And the desired gap 8 is formed. Further, a winding 9 is wound around the magnetic member 2b on the trailing side.
【０００７】以上の説明は、リーディング側の磁性部材
２ａとトレーリング側の磁性部材２ｂとの両者に金属膜
５が形成されるとともに、リーディング側の磁性部材２
ａにアペックス部３が形成されている例について説明し
たが、金属膜５がリーディング側の磁性部材２ａとトレ
ーリング側の磁性部材２ｂとの何れか一方に形成されて
いるものや、アペックス部３がリーディング側の磁性部
材２ａとトレーリング側の磁性部材２ｂとの両者に形成
されているもの等の種々の形態がある。In the above description, the metal film 5 is formed on both the magnetic member 2a on the leading side and the magnetic member 2b on the trailing side, and the magnetic member 2 on the leading side is formed.
Although the example in which the apex portion 3 is formed on a is described, the metal film 5 is formed on either one of the leading-side magnetic member 2a and the trailing-side magnetic member 2b, or the apex portion 3 is formed. Are formed on both the magnetic member 2a on the leading side and the magnetic member 2b on the trailing side.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、前述し
た従来の磁気ヘッド１においては、アペックス部３を有
するリーディング側の磁性部材２ａに、スパッタリング
法等の薄膜形成法によって金属膜５ａを形成する場合に
は、図４に示すように、所定の素材のターゲット１０に
対して、ギャップ対向面６を平行状態として成膜がなさ
れる。すなわち、アペックス部３とターゲット１０とが
非平行状態で成膜がなされ、アペックス部３の金属膜５
の特性が、ギャップ対向面６等のターゲット１０に対し
て平行状態で成膜される他の部分に比べ劣るという問題
点があった。However, in the above-described conventional magnetic head 1, when the metal film 5a is formed on the leading-side magnetic member 2a having the apex portion 3 by a thin film forming method such as a sputtering method. As shown in FIG. 4, a film is formed with a gap facing surface 6 parallel to a target 10 of a predetermined material. That is, the apex portion 3 and the target 10 are formed in a non-parallel state, and the metal film 5 of the apex portion 3 is formed.
However, there is a problem that the characteristic is inferior to that of other portions such as the gap facing surface 6 which are formed in parallel with the target 10.
【０００９】また、前述した従来の磁気ヘッド１のアペ
ックス部３においては、磁束が特性の劣る金属膜５を通
りにくく、主として磁性部材２中を通るためにウィグル
ノイズ等を発生させ易いという問題点があった。Further, in the apex portion 3 of the conventional magnetic head 1 described above, it is difficult for the magnetic flux to pass through the metal film 5 having inferior characteristics, and since the magnetic flux mainly passes through the magnetic member 2, it is easy to generate wiggle noise or the like. was there.
【００１０】本発明はこれらの点に鑑みてなされたもの
であり、前述した従来のものにおける問題点を克服し、
アペックス部の金属膜の磁気特性を向上させ、ウィグル
ノイズの発生要因の一因を確実に除去した極めて信頼性
の高い磁気ヘッドを提供することを目的とする。The present invention has been made in view of these points, and overcomes the above-mentioned problems with the conventional ones.
An object of the present invention is to provide an extremely reliable magnetic head in which the magnetic characteristics of the metal film of the apex portion are improved and one cause of the wiggle noise is reliably removed.
【００１１】[0011]
【課題を解決するための手段】前述した目的を達成する
ため本発明の磁気ヘッドは、ギャップ対向面の少なくと
も一方にアペックス部を有する金属膜が形成された磁気
ヘッドにおいて、前記アペックス部に形成される金属膜
の結晶構成を、前記アペックス部の法線方向に柱状に形
成されていることを特徴としている。In order to achieve the above-mentioned object, the magnetic head of the present invention is a magnetic head having a metal film having an apex portion formed on at least one of the gap facing surfaces. The crystalline structure of the metal film is formed in a columnar shape in the normal direction of the apex portion.
【００１２】[0012]
【作用】ところで、ＭＩＧヘッドと称される金属膜を有
する磁気ヘッドがウィグルノイズを発生することが知ら
れている。そして、このウィグルノイズを防止するため
に各種の提案がなされている。By the way, it is known that a magnetic head having a metal film called a MIG head generates wiggle noise. Various proposals have been made to prevent this wiggle noise.
【００１３】本発明は、本発明者らが永年にわたり鋭意
研究を行なってきた磁気ヘッドの研究において発見した
以下の事実に基づくものである。The present invention is based on the following facts discovered by the present inventors in the research of magnetic heads, which have been earnestly studied for many years.
【００１４】すなわち、ＭＩＧヘッドと称される金属膜
を有する磁気ヘッドにおいては、アペックス部の金属膜
の特性が、ギャップ対向面に比べ劣るとともに、磁気ヘ
ッドのアペックス部においては、磁束が特性の劣る金属
膜部分を通りにくく、主として磁性部材中を通るために
ウィグルノイズを発生させ易いという事実による。That is, in a magnetic head having a metal film called a MIG head, the characteristics of the metal film of the apex portion are inferior to those of the gap facing surface, and the magnetic flux is inferior in the apex portion of the magnetic head. This is due to the fact that it is difficult to pass through the metal film portion and it is easy to generate wiggle noise mainly because it passes through the magnetic member.
【００１５】従って、前述した構成からなる本発明の磁
気ヘッドによれば、アペックス部に形成される金属膜の
結晶構成を、前記アペックス部の法線方向に柱状に形成
することにより、アペックス部に形成される金属膜の磁
気特性を向上させることができる。そして、アペックス
部に形成される金属膜の磁気特性の向上によりアペック
ス部における磁束が、金属膜を通り易くなり、ウィグル
ノイズの発生要因の一因を確実に除去することができ
る。Therefore, according to the magnetic head of the present invention having the above-mentioned structure, the crystal structure of the metal film formed in the apex portion is formed in a columnar shape in the normal direction of the apex portion, so that the apex portion is formed. The magnetic characteristics of the formed metal film can be improved. Then, the magnetic characteristics of the metal film formed in the apex portion are improved, so that the magnetic flux in the apex portion easily passes through the metal film, and one cause of the generation factor of the wiggle noise can be surely removed.
【００１６】[0016]
【実施例】以下、本発明の実施例を図１および図２につ
いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
【００１７】図１は本発明の磁気ヘッドの一実施例の要
部を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing a main part of an embodiment of a magnetic head of the present invention.
【００１８】本実施例の磁気ヘッド１１は、ＭＩＧヘッ
ドに用いたものであり、図１に示すように、熱間静水圧
プレス処理が施された多結晶Ｍｎ−Ｚｎフェライト等の
焼結フェライト等からなる磁性部材１２を素材とし、リ
ーディング側の磁性部材１２ａとトレーリング側の磁性
部材１２ｂとが形成されている。そして、前記リーディ
ング側の磁性部材１２ａのトレーリング側の磁性部材１
２ｂと対向するギャップ対向面１３には、適宜な角度の
傾斜面のアペックス部１４を有する略コの字形状の巻線
窓１５が形成されている。The magnetic head 11 of this embodiment is used for a MIG head, and as shown in FIG. 1, sintered ferrite such as polycrystalline Mn-Zn ferrite or the like which has been subjected to hot isostatic pressing. The magnetic member 12 made of is used as a material to form a leading-side magnetic member 12a and a trailing-side magnetic member 12b. Then, the magnetic member 1 on the trailing side of the magnetic member 12a on the leading side.
A substantially U-shaped winding window 15 having an apex portion 14 having an inclined surface at an appropriate angle is formed on the gap facing surface 13 facing the 2b.
【００１９】また、前記リーディング側の磁性部材１２
ａの巻線窓１５を形成した面と、トレーリング側の磁性
部材１２ｂとは、スパッタリング法等の薄膜形成法によ
って相互に対向する各ギャップ面１３にセンダスト等か
らなる金属膜１６がそれぞれ形成されている。The magnetic member 12 on the leading side is also provided.
A metal film 16 made of sendust or the like is formed on each of the gap surfaces 13 facing each other by a thin film forming method such as a sputtering method on the surface of the magnetic disk 12b on the trailing side where the winding window 15 of a is formed. ing.
【００２０】なお、金属膜１６の素材としては、磁性素
材、例えばパーマロイ系磁性素材、Ｃｏ−Ｔａ系アモル
ファス等を用いてもよく、特に、本実施例に限定される
ものではない。The material of the metal film 16 may be a magnetic material such as a permalloy magnetic material or a Co--Ta amorphous material, and is not particularly limited to this embodiment.
【００２１】そして、前記金属膜１６が形成されたギャ
ップ対向面１３にガラス（ＳｉＯ2）等のギャップ部材
１７を付着させ、相互に対向させるように突き合わせ
て、高温加圧状態でギャップ部材１７を溶融させること
により接合するとともに、所望のギャップ１８が形成さ
れている。さらに、トレーリング側の磁性部材１２ｂに
は、巻線１９が巻回されている。Then, a gap member 17 such as glass (SiO 2) is attached to the gap facing surface 13 on which the metal film 16 is formed, and they are abutted so as to face each other, and the gap member 17 is melted under a high temperature and pressure condition. By joining them, the desired gap 18 is formed. Further, a winding 19 is wound around the magnetic member 12b on the trailing side.
【００２２】つぎに、本実施例のリーディング側の磁性
部材１２ａの金属膜１６の形成方法を図２により説明す
る。Next, a method of forming the metal film 16 of the magnetic member 12a on the leading side of this embodiment will be described with reference to FIG.
【００２３】図２はアペックス部を有するリーディング
側の磁性部材の金属膜の形成方法の一例を説明する説明
図である。FIG. 2 is an explanatory view for explaining an example of a method of forming a metal film of a magnetic member on the leading side having an apex portion.
【００２４】前記アペックス部１４を有するリーディン
グ側の磁性部材１２ａに対する金属膜１６の形成方法
は、スパッタリング法等の公知の薄膜形成法を用いて、
図２に示すように、ターゲット２０と適宜な角度の傾斜
面とされたアペックス部１４とを平行状態として成膜を
行ない製造される。As a method of forming the metal film 16 on the magnetic member 12a on the leading side having the apex portion 14, a known thin film forming method such as a sputtering method is used.
As shown in FIG. 2, the target 20 and the apex portion 14 which is an inclined surface having an appropriate angle are parallel to each other for film formation.
【００２５】つぎに、前述した構成からなる本実施例の
磁気ヘッドの作用について実験例を例示して説明する。Next, the operation of the magnetic head of the present embodiment having the above-mentioned structure will be described by exemplifying an experimental example.
【００２６】本実施例の磁気ヘッド１１の適宜な角度の
傾斜面とされたアペックス部１４のセンダストを素材と
した金属膜１６の磁気特性と、本実施例と同一形状同一
素材からなる従来の磁気ヘッド１のアペックス部３のセ
ンダストを素材とした金属膜５の磁気特性とを比較する
比較実験を行なった。The magnetic characteristics of the metal film 16 made of sendust of the apex portion 14 of the magnetic head 11 of this embodiment, which is an inclined surface at an appropriate angle, and the conventional magnetic material made of the same material and having the same shape as this embodiment. A comparative experiment was conducted to compare the magnetic characteristics of the metal film 5 made of sendust of the apex portion 3 of the head 1 as a material.
【００２７】なお、比較実験項目は、磁気ヘッドとして
重要な磁気特性である１ＭＨｚにおける透磁率μと、保
磁力Ｈｃ（Ｏｅ：エルステッド）と、磁束密度Ｂｓ
（Ｇ：ガウス）とした。The comparative test items are the magnetic permeability μ at 1 MHz, which is an important magnetic characteristic of the magnetic head, the coercive force Hc (Oe: Oersted), and the magnetic flux density Bs.
(G: Gauss).
【００２８】実験結果を以下に示す。The experimental results are shown below.
【００２９】 この実験結果から明白なように、本実施例のアペックス
部１４の金属膜１６の磁気特性は、従来のアペックス部
３の金属膜５の磁気特性に比べ格段に向上させることが
できる。そして、本実施例の金属膜１６の結晶構成は、
アペックス部１４の法線方向に柱状に形成されている。[0029] As is apparent from the results of this experiment, the magnetic characteristics of the metal film 16 of the apex portion 14 of the present embodiment can be significantly improved as compared with the magnetic characteristics of the metal film 5 of the conventional apex portion 3. The crystal structure of the metal film 16 of this embodiment is
It is formed in a column shape in the normal direction of the apex portion 14.
【００３０】また、本実施例による磁気ヘッド１１の磁
束は、アペックス部１４において金属膜１６を主に通過
し、ウィグルノイズの発生がないことも確認された。It was also confirmed that the magnetic flux of the magnetic head 11 according to the present embodiment mainly passed through the metal film 16 in the apex portion 14 and no wiggle noise was generated.
【００３１】なお、本発明は、前記実施例に限定される
ものではなく、必要に応じて変更することができる。例
えば、本実施例のアペックス部１４の形状はギャップ面
１３に対し適宜な角度の傾斜面としたが、ギャップ面１
３に対し逆クラウン状の曲面とすることもできる。The present invention is not limited to the above embodiment, but can be modified as necessary. For example, the shape of the apex portion 14 of the present embodiment is an inclined surface at an appropriate angle with respect to the gap surface 13, but the gap surface 1
Alternatively, the curved surface may have an inverted crown shape.
【００３２】[0032]
【発明の効果】以上説明したように本発明の磁気ヘッド
によれば、アペックス部の金属膜の構成を法線方向に柱
状に形成することにより、アペックス部の金属膜の磁気
特性を向上させるとともに、アペックス部における磁束
が、金属膜を通り易くなり、ウィグルノイズの発生要因
の一因を確実に除去することができ、信頼性の高い情報
処理を行なうことができるという極めて優れた効果を奏
する。As described above, according to the magnetic head of the present invention, the magnetic characteristics of the metal film of the apex portion are improved by forming the metal film of the apex portion in a columnar shape in the normal direction. The magnetic flux in the apex portion easily passes through the metal film, and one cause of the generation factor of the wiggle noise can be surely removed, and highly reliable information processing can be performed.
【図１】本発明に係る磁気ヘッドの一実施例の要部を示
す縦断面図FIG. 1 is a vertical cross-sectional view showing a main part of an embodiment of a magnetic head according to the present invention.
【図２】本発明に係るアペックス部を有するリーディン
グ側の磁性部材の金属膜の形成方法の一例を説明する説
明図FIG. 2 is an explanatory view illustrating an example of a method for forming a metal film of a magnetic member on the leading side having an apex portion according to the present invention.
【図３】従来の磁気ヘッドの要部を示す縦断面図FIG. 3 is a vertical sectional view showing a main part of a conventional magnetic head.
【図４】従来のアペックス部を有するリーディング側の
磁性部材の金属膜の形成方法を説明する説明図FIG. 4 is an explanatory view illustrating a conventional method for forming a metal film of a magnetic member on the leading side having an apex portion.
１１ 磁気ヘッド １２，１２ａ，１２ｂ 磁性部材 １３ ギャップ対向面 １４ アペックス部 １６ 金属膜 １７ ギャップ部材 １８ ギャップ ２０ ターゲット 11 Magnetic Head 12, 12a, 12b Magnetic Member 13 Gap Opposing Surface 14 Apex Part 16 Metal Film 17 Gap Member 18 Gap 20 Target
Claims (1)
ックス部を有する金属膜が形成された磁気ヘッドにおい
て、前記アペックス部に形成される金属膜の結晶構成
を、前記アペックス部の法線方向に柱状に形成されてい
ることを特徴とする磁気ヘッド。1. In a magnetic head in which a metal film having an apex portion is formed on at least one of the gap facing surfaces, the crystal structure of the metal film formed in the apex portion is columnar in a direction normal to the apex portion. A magnetic head characterized by being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25439092A JP2854470B2 (en) | 1992-09-24 | 1992-09-24 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25439092A JP2854470B2 (en) | 1992-09-24 | 1992-09-24 | Magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06111237A true JPH06111237A (en) | 1994-04-22 |
| JP2854470B2 JP2854470B2 (en) | 1999-02-03 |
Family
ID=17264315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25439092A Expired - Fee Related JP2854470B2 (en) | 1992-09-24 | 1992-09-24 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2854470B2 (en) |
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1992
- 1992-09-24 JP JP25439092A patent/JP2854470B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JP2854470B2 (en) | 1999-02-03 |
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