JPS6257111A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPS6257111A JPS6257111A JP19625485A JP19625485A JPS6257111A JP S6257111 A JPS6257111 A JP S6257111A JP 19625485 A JP19625485 A JP 19625485A JP 19625485 A JP19625485 A JP 19625485A JP S6257111 A JPS6257111 A JP S6257111A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- film
- high permeability
- recording
- magnetic film
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Landscapes
- Magnetic Heads (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、磁気記録媒体を媒体面の垂直方向に磁化する
垂直磁気記録において、記録再生効率の優れた垂直磁気
記録ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a perpendicular magnetic recording head with excellent recording and reproducing efficiency in perpendicular magnetic recording in which a magnetic recording medium is magnetized in a direction perpendicular to the surface of the medium.
（従来の技術）
従来、垂直磁気記録において、基本的な記録再生ヘッド
として知られているヘッドを第４図に示す（アイイーイ
ーイー・トランザックジョン・オン・マグネテックス（
ＩＢＥＢ Ｔ’ｒａｎｓ Ｍｊｇｎ、ｔ ＭＡＧ −１
４゜４３６＊ １９７８ ） ）りこれは、高透磁率磁
性薄膜ｌから成る主磁極ヘッドと、高透磁率磁性材料４
から成る補助磁極ヘッドとから構成され、前記補助磁極
に記録再生用のコイ／Ｉ／７を巻いた補助磁極励磁型単
磁極ヘッドであり、この間に記録媒体８が配置される。(Prior Art) Figure 4 shows a head known as a basic recording/reproducing head in perpendicular magnetic recording (IEE Transac John on Magnetex).
IBEB T'rans Mjgn,t MAG -1
4゜436*1978) This consists of a main pole head made of a high permeability magnetic thin film l and a high permeability magnetic material 4.
This is an auxiliary magnetic pole excitation type single magnetic pole head consisting of an auxiliary magnetic pole head consisting of an auxiliary magnetic pole head, and a coil/I/7 for recording/reproduction is wound around the auxiliary magnetic pole, and a recording medium 8 is disposed between the auxiliary magnetic pole head.
（発明が解決しようとする問題点）
この従来ヘッドは、垂直磁気記録に訃いて、高記録密度
を達成しているが、主磁極ヘッドは、短冊状になってお
ル狭トラック化すると主磁極磁性膜は磁気回路的な見方
によると磁気抵抗が大きくなり記録再生効率が十分でな
かった◎
本発明の目的は、この問題点を解決し、記録再生効率を
向上させた垂直磁気記録ヘッドを提供するものである。(Problems to be Solved by the Invention) This conventional head uses perpendicular magnetic recording to achieve high recording density. From the perspective of a magnetic circuit, magnetic films have large magnetic resistance and insufficient recording and reproducing efficiency. The purpose of the present invention is to solve this problem and provide a perpendicular magnetic recording head with improved recording and reproducing efficiency. It is something to do.
（問題点を解決するための手段）
本発明は、高透磁率磁性薄膜を含む複数の高透磁率磁性
体からなる主磁極磁性膜と、１つ又は複数のコイルとを
含んで構成される磁気ヘッドにおいて、記録再生に関与
する該主磁極磁性薄膜の幅が媒体と接する端面へ向かり
てトラック幅より大きな幅から、トラック幅の長さにま
で変化している形状を有することを特徴とする磁気ヘッ
ドであるＯ
（作用）
記録再生に関与する主磁極ヘッドＯ高透磁率磁性体（以
降、主磁極磁性膜と略する）を、トラック鴨方向におい
て、トラック幅より大きな幅から、媒体と接する端面へ
向かつて、トラック幅の長さに絞シ込む形状にすること
によシ、トラック幅と同じである従来技術の短冊状の主
磁極磁性膜に比べ磁気回路的に見た場合、磁気抵抗を小
さくすることができる。そして、記録再生電圧に係わる
磁束か増加し、記録再生効率の向上が計られる口（実施
例）
次に１本発明の実施例を第２図に示す口ただし、以下の
５ｊ！施例では主磁極磁性膜は、第１図に示すような威
り込みの形状に形成した。すなわち高透磁率磁性薄膜ｌ
は絞ｐ込み角度φでトラック幅ＴＷまで変化している。(Means for Solving the Problems) The present invention provides a magnetic field comprising a main pole magnetic film made of a plurality of high permeability magnetic materials including a high permeability magnetic thin film, and one or more coils. The head is characterized in that the width of the main pole magnetic thin film involved in recording and reproduction changes from a width larger than the track width to the length of the track width toward the end surface in contact with the medium. (Operation) The main pole head O, which is a magnetic head, is brought into contact with the medium from a width larger than the track width in the direction of the track. By forming a shape that narrows down to the length of the track width toward the end face, the magnetic resistance is reduced from a magnetic circuit perspective compared to the strip-shaped main pole magnetic film of the prior art, which is the same as the track width. can be made smaller. Then, the magnetic flux related to the recording and reproducing voltage is increased, and the recording and reproducing efficiency is improved (Example) Next, an example of the present invention is shown in FIG. 2, but the following 5j! In the example, the main pole magnetic film was formed in a convex shape as shown in FIG. That is, a high permeability magnetic thin film l
varies up to the track width TW with the narrowing angle φ.
第２図（、）は、主磁極ヘッドと補助磁極ヘッドを組み
合せたヘッドで、補助磁極励磁盤ヘッドの実施例である
。FIG. 2 (,) shows a head that combines a main magnetic pole head and an auxiliary magnetic pole head, and is an example of an auxiliary magnetic pole excitation disk head.
非磁性基板５として厚さ１ｒＸＩｌｎのネオセラムガラ
ス基板上に、主磁極磁性膜として厚さ０．３μｍのＣｏ
ＺｒＮｅ非晶質合金からなる第１の高透磁率磁性薄膜ｌ
を、ＲＦマグネトロンスパッタ法によ）作製した。そし
て、この主磁極磁性膜を第１図に示すような絞り込みの
形状に１周知の半導体集積化微細加工技術を用いて形成
した。次に、前記主磁極ヘッドに更に磁１１．−を増加
させるための厚づけＩ傍として、厚さ３μｍの同じ（Ｃ
ｏＺｒＮｂ非晶質合金からなる第２の高透磁率磁性膜２
をＲＦマグネトロンスパッタ法によシ作製した。なお、
以下の実施例において、厚づけｊ−として第２の高透磁
率磁性膜２を形成した◎これは、記録再生の効率から考
えると具備した方が望ましいが、なくてもよい。The non-magnetic substrate 5 is a Neoceram glass substrate with a thickness of 1rXIln, and the main pole magnetic film is a Co with a thickness of 0.3 μm.
First high permeability magnetic thin film made of ZrNe amorphous alloy
was produced by RF magnetron sputtering method). Then, this main pole magnetic film was formed into a narrow shape as shown in FIG. 1 using a well-known semiconductor integration microfabrication technique. Next, a magnet 11. is added to the main pole head. - As a thickening I side to increase the same (C
Second high permeability magnetic film 2 made of oZrNb amorphous alloy
was produced by RF magnetron sputtering. In addition,
In the following examples, the second high permeability magnetic film 2 was formed as the thickening film 2. Although it is desirable to have this in terms of recording and reproducing efficiency, it is not necessary.
このようにして、主磁極ヘッドを作製する一方補助磁極
ヘッドは、高透磁率磁性材料４′から成るＭｎ −Ｚｎ
フェライトにコイル７を巻き作製した。In this way, the main pole head is manufactured, while the auxiliary pole head is made of Mn-Zn made of high permeability magnetic material 4'.
A coil 7 was produced by winding it around ferrite.
記録再生の方法は、次の通りである。記録媒体８を移動
させ、記録時にはコイル７に電圧を印加することにより
コイルに発生した磁界によシ。The recording/reproducing method is as follows. By moving the recording medium 8 and applying a voltage to the coil 7 during recording, the magnetic field generated in the coil is used.
情報を記録し、再生時には、記録媒体６からの漏洩磁界
によりコイル７に誘起される電圧を検出したＯ
第２図（ｂ）は、図（、）と同様に主磁極ヘッドと補助
磁極ヘッドを組み合わせた主磁極ヘッドヘッドの実施例
である〇
主磁極ヘッド及び補助磁極ヘッドの作製方法は。When information is recorded and reproduced, the voltage induced in the coil 7 by the leakage magnetic field from the recording medium 6 is detected. This is an example of a combined main pole head. The method for manufacturing the main pole head and the auxiliary pole head is as follows.
ｗＪ２図（、）と同様であるので詳細は略するが、コイ
ル７を主磁極側に巻き、上部に、磁束を更に増加させる
ために、高透磁率磁性材料４″から成るＭｎ−Ｚｎフェ
ライトを設けたものである。しかし、高透磁率磁性材料
４″は、必要に応じて設ければよく、なくてもよい。記
録再生の方法は、前記実施例と同様である。The details are omitted as it is the same as in Figure wJ2 (,), but the coil 7 is wound on the main pole side, and Mn-Zn ferrite made of high permeability magnetic material 4'' is placed on the top to further increase the magnetic flux. However, the high permeability magnetic material 4'' may be provided as needed or may be omitted. The recording and reproducing method is the same as in the previous embodiment.
第２図（ｃ）は、片側励磁型ヘッドの実施例を示したも
ので、前記実施例と同様の方法、材料で、非磁性基板５
上に、主磁極磁性膜としての第１の高透磁率磁性博膜ｌ
と厚づけ層としての第２の高透磁率磁性膜２を形成した
。次に、Ｌ牢屋の高透磁率磁性材料４から成る側面部材
として、Ｍｎ−Ｚｎフェライトを用い、同図（Ｃ）のよ
うに接着した。さらに、保ａ！４膜の役目の非磁性絶縁
膜６としてエポキシｗ脂硬質耐熱性接着剤を用いた。記
録再生の方法は、前記実施例と同様である。FIG. 2(c) shows an embodiment of a single-sided excitation type head, in which a non-magnetic substrate 5 is
On top, a first high permeability magnetic film l as a main pole magnetic film.
A second high permeability magnetic film 2 as a thickening layer was then formed. Next, Mn--Zn ferrite was used as a side member of the high permeability magnetic material 4 of the L prison, and it was bonded as shown in FIG. 4(C). In addition, Hoa! As the non-magnetic insulating film 6 serving as the fourth film, an epoxy double-stick hard heat-resistant adhesive was used. The recording and reproducing method is the same as in the previous embodiment.
Ｍ２図（−１）は、薄膜ヘッドの実施例を示したもので
％罰記芙施例と同様の方法、材料で非磁性基板５上に、
主磁極磁性膜としての第１の高透磁率磁性（４膜ｌと厚
づけ層としての第２の高透磁率磁性膜２、及び磁束のリ
ターンパスとして高透磁率磁性膜２′８形成した。また
、コイル７′として銅をメッキ法によプ形成し、保ｄ膜
の役目の非磁性結縁膜６としてエポキシ樹脂系硬質耐熱
性接着剤を用いた０記録再生の方法は、前記実施例と同
様である。Figure M2 (-1) shows an example of a thin film head.
A first high permeability magnetic film (4 films 1) as a main pole magnetic film, a second high permeability magnetic film 2 as a thickening layer, and a high permeability magnetic film 2'8 as a return path for magnetic flux were formed. Further, a zero recording and reproducing method in which copper is formed by plating as the coil 7' and an epoxy resin-based hard heat-resistant adhesive is used as the non-magnetic binding film 6 serving as a retention film is similar to the above embodiment. The same is true.
なお、上記実施例において、高透磁率磁性！ｉ＆ｌ。In addition, in the above example, high magnetic permeability! i&l.
２．２′として、スパッタ法によるＣｏＺｒＮｂ非晶質
合金膜を用いたが、別の成膜法、例えばメッキ法、蒸着
法でもよく％また。膜もｓ ＣｏＺｒＭ合金膜（ＭはＨ
ｆ等第３の添加金属を意味する）、パーマロイ膜、セン
ダスト膜等でもよい０さらに、高透磁率磁性材料４．
４’、 ４“として％Ｍｎ −Ｚｎ系フェライトの他
、Ｎｉ−Ｚｎ７エライト、Ｎ菟−ｒｅ金合金センダスト
等でもよい口また、主磁極磁性膜としての高透磁率磁性
薄膜ｌの絞シ込み形状は、本実施例において第１図に示
したように形成したが、第３図（ａｔ〜（ｄ）に示すよ
うな他の形状でもよい。ここで、図（、）は片側から絞
夛込んだものであり、図（ｂ）及び（Ｃ）は絞プ込み形
状を曲線状にしたものであるロー（ｄ）は、絞り込み形
状の先端の部分に、絞り込みの効果が失われないような
長さで、短備状に残したものである。As 2.2', a CoZrNb amorphous alloy film was used by sputtering, but other film forming methods such as plating or vapor deposition may also be used. The film is also CoZrM alloy film (M is H
f), a permalloy film, a sendust film, etc.Furthermore, a high permeability magnetic material4.
4', 4'' may be made of %Mn-Zn ferrite, Ni-Zn7 elite, N-re gold alloy sendust, etc. Also, the narrowed shape of the high magnetic permeability magnetic thin film l as the main pole magnetic film is formed as shown in FIG. 1 in this example, but other shapes as shown in FIG. 3 (at to (d)) may also be used. Figures (b) and (C) are curved aperture shapes.Low (d) is a curved aperture shape. So, this is what I left in the short notice.
次に、本発明によるヘッドと従来のヘッドについて記録
再生評価による比較を行なった０ここで本発明及び従来
ヘッドは、第２図（ａ）に示したものを用いた。ここで
１本発明ヘッドの主磁極磁性膜は、第１図に示すような
絞シ込み形状を有しておシ、従来ヘッドの主磁極磁性膜
は絞シ込みがなく短冊状でトラック幅３００μｍ８して
いる。なお、本発明ヘッドにおいて幅１ｍｍからトラッ
ク幅３００μｍへの絞り込み角φは、３０”、 ４ｓ６
°、６００と３種類のものを作製した０そして１本発明
及び従来ヘッドの主磁極ヘッドとして主磁極磁性膜が０
．３μｍ厚のＣｏＺｒＮｂスパッタ膜、厚づけ層が３μ
ｍのＣｏＺｒＮｂスパッタ膜で形成されているものを用
い、記録媒体８としてＣｏ −Ｃｒ／Ｎｔ −Ｐａ二層
垂直媒体を用い、３．５７０ツピ一デイスク評価装置に
て、記録再生評価した。その結果を、＠５図に示す。Next, the head according to the present invention and the conventional head were compared by recording/reproducing evaluation.Here, the head according to the present invention and the conventional head shown in FIG. 2(a) were used. Here, 1. The main pole magnetic film of the head of the present invention has a constriction-scarred shape as shown in FIG. are doing. In addition, in the head of the present invention, the narrowing angle φ from a width of 1 mm to a track width of 300 μm is 30”, 4s6
The main pole magnetic film of the main pole head of the present invention and the conventional head is 0 and 1.
．． 3μm thick CoZrNb sputtered film, thickening layer 3μm
Recording and reproduction were evaluated using a Co--Cr/Nt--Pa two-layer vertical medium as the recording medium 8 using a 3.570-pi disk evaluation device. The results are shown in Figure @5.
−第５図は、孤立波に−おける、絞シ込み角度φと再生
電圧Ｅとの関係を示したものである。なお、ここで、φ
＝９０°は、従来ヘッドの値である。これから、絞り込
み角度φが小さくなるほど、再生電圧Ｅが増加すること
がわかった０したがりて１本発明により主磁極磁性膜が
、絞り込み形状を有することにより、従来の短冊状に比
べ、記録再生効率の向上がなされた。FIG. 5 shows the relationship between the narrowing angle φ and the reproduction voltage E in a solitary wave. Note that here, φ
=90° is the value of the conventional head. From this, it was found that the reproduction voltage E increases as the convergence angle φ becomes smaller. Therefore, the main pole magnetic film according to the present invention has a constriction shape, which improves the recording and reproduction efficiency compared to the conventional strip shape. improvements have been made.
（発明の効果）
本発明は、主磁極磁性膜を絞り込み形状にすることによ
り、以下に示す効果がありた〇（１１記録再生効率が向
上し、再生電圧が増加した０
（２）配録時に、より少ない記録電流で、媒体を容易に
磁化することができ、消費電力が少なくなった０
（３） 再生分解能が向上し、記録密度が伸びた。(Effects of the Invention) The present invention has the following effects by forming the main pole magnetic film into a constricted shape. , the medium can be easily magnetized with less recording current, reducing power consumption. (3) Reproduction resolution has improved and recording density has increased.
（４）磁区構造に安定化が見られ所望のヘッド特性が得
られるようになシ、歩留ルが改善された。(4) The magnetic domain structure was stabilized, the desired head characteristics were obtained, and the yield was improved.
第１図は５本発明の磁気ヘッドの主磁極磁性薄膜の形状
の一例を示す図％第２図は本発明の実施例を示す図、第
３図は主磁極磁性薄膜の他の形状を示す図、第４図は、
従来の磁気ヘッドの例を示す図％第５図は、絞り込み角
度φと再生電圧Ｅとの関係について示した図ロ
ト・・高透磁率磁性薄膜
２、 ２’、 ２＃・・高透磁率磁性膜４、 ４／、
４ＩＩ、・・高透磁率磁性材料５・・・非磁性基板
６・・・非磁性絶縁膜
７．７′・・・コイル
８・・・記録媒体
ど−＼
兜 ｊ 図
了り
（α）（ｂ）
（Ｃ） （ｄ）第３図
７ｗ
（α）（ｂ）
（Ｃ） （ｄ）第４図Figure 1 is a diagram showing an example of the shape of the main pole magnetic thin film of the magnetic head of the present invention. Figure 2 is a diagram showing an embodiment of the present invention, and Figure 3 is a diagram showing another shape of the main pole magnetic thin film. Figure 4 is
Figure 5 shows an example of a conventional magnetic head. Figure 5 is a diagram showing the relationship between the narrowing angle φ and the reproduction voltage E.Roto...High permeability magnetic thin film 2, 2', 2#...High permeability magnetic Membrane 4, 4/,
4II,...High permeability magnetic material 5...Nonmagnetic substrate 6...Nonmagnetic insulating film 7.7'...Coil 8...Recording medium? b) (C) (d) Fig. 3 7w (α) (b) (C) (d) Fig. 4
Claims (1)
主磁極磁性膜と、１つ又は複数のコイルとを含んで構成
される磁気ヘッドにおいて、記録再生に関与する該主磁
極磁性薄膜の幅が媒体と接する端面へ向かって、トラッ
ク幅より大きな幅からトラック幅の長さにまで変化して
いる形状を有することを特徴とする磁気ヘッド。In a magnetic head that includes a main pole magnetic film made of a plurality of high permeability magnetic materials including a high permeability magnetic thin film, and one or more coils, the main pole magnetic thin film involved in recording and reproduction is 1. A magnetic head having a shape in which the width changes from a width larger than a track width to a length equal to the track width toward an end surface in contact with a medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19625485A JPS6257111A (en) | 1985-09-04 | 1985-09-04 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19625485A JPS6257111A (en) | 1985-09-04 | 1985-09-04 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6257111A true JPS6257111A (en) | 1987-03-12 |
Family
ID=16354748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19625485A Pending JPS6257111A (en) | 1985-09-04 | 1985-09-04 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6257111A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04366403A (en) * | 1991-06-14 | 1992-12-18 | Nec Corp | Vertical magnetic head and its manufacture |
| KR20000007599A (en) * | 1998-07-04 | 2000-02-07 | 구자홍 | Magnetic head apparatus |
| JP2008123692A (en) * | 2005-02-07 | 2008-05-29 | Samsung Electronics Co Ltd | Vertical magnetic recording head |
| WO2009019981A1 (en) * | 2007-08-08 | 2009-02-12 | Seiko Instruments Inc. | Proximity-field optical head, and information recording/reproducing device |
| US7518826B2 (en) | 2004-11-08 | 2009-04-14 | Tdk Corporation | Perpendicular magnetic recording head and magnetic recording apparatus |
| US8098456B2 (en) | 2005-04-28 | 2012-01-17 | Samsung Electronics Co., Ltd. | Perpendicular magnetic recording head having a tapered main pole |
| JP2013054809A (en) * | 2011-09-06 | 2013-03-21 | Hitachi Ltd | Magnetic recording head and magnetic recording apparatus |
| US8599520B1 (en) * | 2011-12-20 | 2013-12-03 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having an adaptive read sensor track width |
-
1985
- 1985-09-04 JP JP19625485A patent/JPS6257111A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04366403A (en) * | 1991-06-14 | 1992-12-18 | Nec Corp | Vertical magnetic head and its manufacture |
| KR20000007599A (en) * | 1998-07-04 | 2000-02-07 | 구자홍 | Magnetic head apparatus |
| US7518826B2 (en) | 2004-11-08 | 2009-04-14 | Tdk Corporation | Perpendicular magnetic recording head and magnetic recording apparatus |
| JP2008123692A (en) * | 2005-02-07 | 2008-05-29 | Samsung Electronics Co Ltd | Vertical magnetic recording head |
| US8098456B2 (en) | 2005-04-28 | 2012-01-17 | Samsung Electronics Co., Ltd. | Perpendicular magnetic recording head having a tapered main pole |
| WO2009019981A1 (en) * | 2007-08-08 | 2009-02-12 | Seiko Instruments Inc. | Proximity-field optical head, and information recording/reproducing device |
| JP5611590B2 (en) * | 2007-08-08 | 2014-10-22 | セイコーインスツル株式会社 | Near-field optical head and information recording / reproducing apparatus |
| JP2013054809A (en) * | 2011-09-06 | 2013-03-21 | Hitachi Ltd | Magnetic recording head and magnetic recording apparatus |
| US8824103B2 (en) | 2011-09-06 | 2014-09-02 | Hitachi, Ltd. | Magnetic recording head and magnetic recording apparatus |
| US8599520B1 (en) * | 2011-12-20 | 2013-12-03 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having an adaptive read sensor track width |
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