JPS61134907A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPS61134907A JPS61134907A JP25666184A JP25666184A JPS61134907A JP S61134907 A JPS61134907 A JP S61134907A JP 25666184 A JP25666184 A JP 25666184A JP 25666184 A JP25666184 A JP 25666184A JP S61134907 A JPS61134907 A JP S61134907A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- magnetic
- head
- medium
- coil
- 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
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (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圧磁化する垂
直磁気記録罠おいて、効率の良い記録再生を行なう磁気
ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a magnetic head that performs efficient recording and reproduction in a perpendicular magnetic recording trap in which a magnetic recording medium is piezomagnetized in a direction perpendicular to the surface of the medium.
（従来技術とその問題点）
垂直磁気記録忙おける、１つの組み合せとして、第３図
（ａ）に示すようＫ リング型磁気ヘッドと垂直異方性
単層膜が知られている（昭和５６年度電子通信′学会全
国大会講演論文集分冊Ｉ Ｐ１７９）。第３図（ａｌｔ
ｉ、高透磁率磁性材料１に、コイル５を巻い友リング型
ヘッド１０であり、図（ｂ）ｔＬ高透磁率磁性材料１の
ギヤツブ部付近に高透磁率磁性薄膜２を蒸着、スパッタ
リング等で付加し、コイル５を巻いたメタルインギャッ
プリング型へラド１１である。リング型ヘッド１０及び
メタルインギャップリング型へラド１１において、記録
媒体基板４と垂直異方性膜３から成る記録媒体を６の方
向へ移動させ、記録時には、コイル５に電流を流して、
媒体に記録し、再生時忙は、媒体からの残留磁界により
コイル５に電流が流れ、情報の記憶を行彦っていｔｏ
ところが、前記ヘッドは、従来の面内記録方式と基本的
には同様であり、媒体を垂直に記録させるのに関与する
磁界の垂直成分の大きさと同程度に面内に記録させるの
に関与する磁界の水平成分が記録時九発生する。し念が
って、媒体を垂直に記録するｔめに、ヘッドのギャップ
長を狭くしたり、媒体の垂直異方性を高め之すしてい念
。しかし、ヘッドを狭ギャップにすることは、ギャップ
長の精度及び加工上に困難が伴い、歩留りの低下が起つ
念。さらに１媒体の垂直異方性を十分高めることは、連
続製造上難かしい。(Prior art and its problems) One known combination for perpendicular magnetic recording is a K-ring magnetic head and a perpendicular anisotropic single layer film, as shown in Figure 3(a). Collected papers from the National Conference of the Society of Electronics and Communication Engineers, Volume I, P179). Figure 3 (alt
i. A coil 5 is wound around a high permeability magnetic material 1 to form a ring-type head 10, and a high permeability magnetic thin film 2 is deposited near the gear part of the high permeability magnetic material 1 by vapor deposition, sputtering, etc. It is a metal-in-gap ring type helad 11 with a coil 5 wound thereon. In the ring type head 10 and the metal-in-gap ring type head 11, the recording medium consisting of the recording medium substrate 4 and the vertical anisotropic film 3 is moved in the direction 6, and during recording, a current is passed through the coil 5,
During recording and reproduction on a medium, a residual magnetic field from the medium causes a current to flow through the coil 5, and the information is stored. However, the head is basically the same as the conventional longitudinal recording method. During recording, a horizontal component of the magnetic field that causes in-plane recording is generated to the same extent as the vertical component of the magnetic field that causes vertical recording on the medium. However, in order to record perpendicularly to the medium, it is recommended to narrow the head gap length or increase the perpendicular anisotropy of the medium. However, making the head with a narrow gap poses difficulties in gap length accuracy and machining, leading to a drop in yield. Furthermore, it is difficult to sufficiently increase the perpendicular anisotropy of one medium in terms of continuous production.
（発明の目的）
本発明は、上記の欠点を改善するために１補助磁極の配
置により、記録時には、磁界の垂直成分を高め、記録効
率を上げ、再生時忙け、出力電圧の増加とかり、記録再
生に優れた垂直磁気記録用ヘッド？提供するものである
。(Objective of the Invention) In order to improve the above-mentioned drawbacks, the present invention increases the perpendicular component of the magnetic field during recording by arranging one auxiliary magnetic pole, thereby increasing the recording efficiency and reducing the busy time during reproduction and the increase in output voltage. , a perpendicular magnetic recording head with excellent recording and playback performance? This is what we provide.
（発明の構成）
本発明はリング型磁気ヘッド又はメタルインギャップリ
ング型磁気ヘッドＫ＞いて、磁気記録媒体を挾んで、反
対側に高透磁率磁性材料から成る補助磁極を配置したこ
とを特徴とする。(Structure of the Invention) The present invention is characterized in that a ring-type magnetic head or a metal-in-gap ring-type magnetic head is provided with an auxiliary magnetic pole made of a high magnetic permeability magnetic material on the opposite side of the magnetic recording medium. do.
（実施例）
以下、本発明について図面を用いて詳細に説明する。第
１図及び第２図は本発明の実施例を示す図である。まず
、第１図は、高透磁率磁性材料１に、コイル５が巻かれ
たリング型ヘッド１０と、記録媒体基板４と垂直異方性
膜３から成る垂直磁気記優媒体を挾んで、反対側に前記
材料１と同種又は異種の高透磁率磁性材料１′から成る
補助磁極１５とを配置したもので、記録媒体を６の方向
へ移動させ、記録時ＫＶｉ、コイル５に電流を流して、
媒体に記録し、再生時ＫＦｉ媒体からの残留磁界により
コイル５に電流が流れ、情報の記憶を行かう。(Example) Hereinafter, the present invention will be described in detail using the drawings. FIGS. 1 and 2 are diagrams showing embodiments of the present invention. First, FIG. 1 shows a ring-shaped head 10 in which a coil 5 is wound around a high magnetic permeability magnetic material 1, and a perpendicular magnetic recording medium consisting of a recording medium substrate 4 and a perpendicular anisotropic film 3 held in between. An auxiliary magnetic pole 15 made of a high magnetic permeability magnetic material 1' of the same type or a different type from the material 1 is arranged on the side.The recording medium is moved in the direction 6, and a current is applied to KVi and the coil 5 during recording. ,
When information is recorded on a medium and reproduced, a residual magnetic field from the KFi medium causes current to flow through the coil 5, thereby storing information.
次に、第２図は、基本的には第１図と同様であるが、高
透磁率磁性材料１０１ケ所に高透磁率磁性薄膜２を形成
したメタルインギャップ型へラド１１における実施例で
ある。Next, FIG. 2 is basically the same as FIG. 1, but shows an example of a metal-in-gap type herad 11 in which high permeability magnetic thin films 2 are formed at 101 locations of high permeability magnetic material. .
なお、第１図、第２図において、補助磁極１５の形状は
、四角柱であるが、円柱等任意の形状でもよく、さらに
、補助磁極１５にコイルを巻いて、励磁ヘッドとして使
用してもよい。In FIGS. 1 and 2, the shape of the auxiliary magnetic pole 15 is a square prism, but it may have any shape such as a cylinder. Furthermore, a coil may be wound around the auxiliary magnetic pole 15 and used as an excitation head. good.
次に、本発明の実施例のヘッドに使用した材料を示す。Next, materials used for the head of the embodiment of the present invention will be shown.
第１図、第２図、第３図において、高透磁率磁性材料１
．１’にはＭｎ −Ｚｎｎ系フッイトを用い、高透磁率
磁性薄膜２には、蒸着、メッキ・スバフタ法のいづれか
で形成される６系非晶質膜又はパーマロイ膜を用いた。In Figures 1, 2, and 3, high permeability magnetic material 1
．． A Mn-Znn based foot was used for 1', and a 6-based amorphous film or a permalloy film formed by either vapor deposition, plating or buffing was used for the high permeability magnetic thin film 2.
本発明の効果を明らかにするために、リング型ヘッドに
ついて本発明ヘッド（第１図）と従来ヘッド（第３図（
ａ））とを記録再生における評価を行彦った。なお、用
いた媒体は、フロッピー用Ｃｏ−Ｃｒ単層媒体である。In order to clarify the effects of the present invention, the present invention head (Fig. 1) and the conventional head (Fig. 3 (Fig. 3) were compared with ring-type heads.
We evaluated a)) in terms of recording and playback. The medium used was a Co--Cr single layer medium for floppies.
記録電流（工。）−出力電圧特性（Ｅｏ）についての結
果を第４図に示す。第４図から、本発明ヘッドは、従来
ヘッドと比較して、記録し易く、又、出力電圧が大きい
ことがわかった。FIG. 4 shows the results regarding the recording current (E)-output voltage characteristics (Eo). From FIG. 4, it was found that the head of the present invention was easier to record and had a higher output voltage than the conventional head.
（発明の効果）
本発明は、従来ヘッドに補助磁極を付加することＫより
、以下の効果があった。(Effects of the Invention) The present invention has the following effects compared to adding an auxiliary magnetic pole to the conventional head.
（１）記録時において、記録電流を小さく出き、消費電
力も小さくなった。(1) During recording, a smaller recording current is output and power consumption is also reduced.
（２）再生出力が従来より大きな値が得られた。(2) A larger value of reproduction output than before was obtained.
（３）媒体の異方性が従来より低い値でも、記録再生で
きた。(3) Recording and reproduction were possible even when the anisotropy of the medium was lower than conventional values.
（４）従来よりギャップが広くでき、ギャップ精度が向
上し、歩留りも改善された。(4) The gap can be made wider than before, the gap accuracy is improved, and the yield is also improved.
第１図、第２図は本発明の実施例を示す図、第３図は、
従来から提案されている磁気ヘッドを示す図、第４図は
、従来ヘッドと本発明によるヘッドについて、記録電流
工。と再生出力電圧焉との関係を示した図。
１．１′・・・高透磁率磁性材料 ２・・・高透磁
率磁性薄膜３・・・垂直異方性膜 ４・・
・記録媒体基板５・・・コイル ６・・・
記録媒体の移動方向・１０・・・リング型磁気ヘッド
１１・・・メタルインギャップリング型磁気ヘッド１５
・・・補助磁極
第１図
１．１′ 高透磁ｊＰＥ昧士生ニオ科３ 皇ｉｌｌ
！方オ主膿
４、訛儒Ｉ策棒１級
５、コイル
乙 １ヒノ引ヤ（１に４オ（ｈオ号重力方ｎ１１０
、 りンワ゛型届１へ−７）−
１５、稀’ｊ、ｔＦ穐スム
第２図
Ｚ、高透磁率１ａ性藩順
１１、メワルイシ午°°マッフ０１ルク″９５ｔヘッド
第３ 図
第４図
梱FIG. 1 and FIG. 2 are diagrams showing an embodiment of the present invention, and FIG. 3 is a diagram showing an embodiment of the present invention.
FIG. 4 is a diagram showing a conventionally proposed magnetic head. FIG. 4 shows the recording current construction of the conventional head and the head according to the present invention. FIG. 3 is a diagram showing the relationship between the output voltage and the reproduced output voltage. 1.1'... High magnetic permeability magnetic material 2... High magnetic permeability magnetic thin film 3... Vertical anisotropic film 4...
・Recording medium board 5...Coil 6...
Moving direction of recording medium 10...Ring type magnetic head 11...Metal-in-gap ring type magnetic head 15
...Auxiliary magnetic pole Figure 1 1.1' High permeability
! Fang O Shuyu 4, Accent Confucian I Strategy 1st Grade 5, Coil Otsu 1 Hino Hikiya (1 to 4 O (h O Gravity Way N110)
, Rinwa type notification 1 - 7) - 15, Rare 'j, tF Sumumu Fig. 2 Z, High magnetic permeability 1a property 11, Mewaruishi o °° Muff 01 Luk'' 95t head Fig. 3 Fig. 4 Illustrated packaging
Claims (1)
気ヘッドにおいて、磁気記録媒体を挾んで、反対側に、
高透磁率磁性材料から成る補助磁極を配置したことを特
徴とする磁気ヘッド。In a ring type magnetic head or a metal-in-gap ring type magnetic head, on the opposite side with the magnetic recording medium in between,
A magnetic head characterized in that an auxiliary magnetic pole made of a high permeability magnetic material is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25666184A JPS61134907A (en) | 1984-12-05 | 1984-12-05 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25666184A JPS61134907A (en) | 1984-12-05 | 1984-12-05 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61134907A true JPS61134907A (en) | 1986-06-23 |
Family
ID=17295710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25666184A Pending JPS61134907A (en) | 1984-12-05 | 1984-12-05 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61134907A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4839761A (en) * | 1987-07-31 | 1989-06-13 | Seagate Technology, Inc. | Magnetic head for perpendicular magnetic recording system |
| JPH07307004A (en) * | 1994-05-11 | 1995-11-21 | Nec Corp | Magnetic head device |
-
1984
- 1984-12-05 JP JP25666184A patent/JPS61134907A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4839761A (en) * | 1987-07-31 | 1989-06-13 | Seagate Technology, Inc. | Magnetic head for perpendicular magnetic recording system |
| JPH07307004A (en) * | 1994-05-11 | 1995-11-21 | Nec Corp | Magnetic head device |
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