JPS58150121A - Vertical magnetic recording head - Google Patents
Vertical magnetic recording headInfo
- Publication number
- JPS58150121A JPS58150121A JP3292082A JP3292082A JPS58150121A JP S58150121 A JPS58150121 A JP S58150121A JP 3292082 A JP3292082 A JP 3292082A JP 3292082 A JP3292082 A JP 3292082A JP S58150121 A JPS58150121 A JP S58150121A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- pole
- film
- main
- auxiliary
- 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】
本発明は、垂直磁気記録媒体を垂直方向に磁化する磁気
記録に用いる垂直磁気記録へ、ドの改良に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in perpendicular magnetic recording used for magnetic recording in which a perpendicular magnetic recording medium is magnetized in the perpendicular direction.
従来、磁気記録媒体の面方向の残留磁化を用いたものが
一般的である。しかし、この方式では、記録情報の高密
度化とともに磁気記録媒体内の磁場が大きくなるため記
録情報の高密度化に限界があった。そこで、記録情報の
高密度化とともに反磁場を零に近ずける方式として垂直
磁気記録媒体面に垂直な磁化モードを利用する垂直磁化
方式が提案された。この垂直磁化方式に使用される磁気
へ、ドには、第1図(A)、(B)に示すように構成し
たものがある。即ち、第1図(A)に示す磁気へ、ド1
は、その先端を先細に形成した磁気記録再生用主磁極1
aと、磁気抵抗減少用として断面積を大きく形成した補
助磁極1bと、記録情報に対応した電流を与えるため、
又は、記録された情報を再生した電流を得るための記録
再生用コイル1cとから構成されており、記録情報に対
応した電流がコイル1cに与えられると、破線で示す磁
束2が主磁極1a→磁気記録媒体3→補助磁極1b→主
磁極1aで構成される閉磁気回路を透過し、この磁ゝ束
2により主磁極1aの先端に対向する垂直磁気記録媒体
シの磁性層に垂直方向に前記電流に対応した記録情報が
磁化される。また、第1図(B)に示す磁気へ、ド1′
は、第1図(A)に示す磁気へ、ド1の主磁極1aの先
端を先細に形成する代シに非磁性材1dの間にスパッタ
リング等圧よって磁性層1a/を形成したものである。Conventionally, it has been common to use residual magnetization in the in-plane direction of a magnetic recording medium. However, with this method, the magnetic field within the magnetic recording medium increases as the density of recorded information increases, so there is a limit to how high the density of recorded information can be increased. Therefore, a perpendicular magnetization method that utilizes a magnetization mode perpendicular to the surface of a perpendicular magnetic recording medium was proposed as a method for increasing the density of recorded information and bringing the demagnetizing field closer to zero. The magnetic field used in this perpendicular magnetization method includes one constructed as shown in FIGS. 1(A) and 1(B). That is, to the magnetism shown in FIG. 1(A),
is a main magnetic pole 1 for magnetic recording and reproducing whose tip is tapered.
a, an auxiliary magnetic pole 1b formed with a large cross-sectional area for reducing magnetic resistance, and in order to provide a current corresponding to the recorded information,
Alternatively, it is composed of a recording and reproducing coil 1c for obtaining a current that reproduces recorded information, and when a current corresponding to the recorded information is applied to the coil 1c, a magnetic flux 2 shown by a broken line changes from the main magnetic pole 1a to The magnetic flux 2 passes through a closed magnetic circuit consisting of the magnetic recording medium 3 → auxiliary magnetic pole 1b → main magnetic pole 1a, and the magnetic flux 2 causes the magnetic flux 2 to spread in the perpendicular direction to the magnetic layer of the perpendicular magnetic recording medium facing the tip of the main magnetic pole 1a. Recorded information corresponding to the current is magnetized. In addition, to the magnetism shown in FIG. 1(B),
1(A), a magnetic layer 1a/ is formed between the non-magnetic material 1d by equal pressure sputtering, instead of forming the tip of the main pole 1a of the magnetic pole 1 into a tapered shape. .
このような従来の磁気へ、ドでは、所定の磁束は閉磁気
ループとなるが、大部分が開磁気ループとなる。即ち、
主磁極1a及び磁性層1 a’から発生した磁束が磁気
記録媒体3上で漏れてしまうため、記録効率が低下する
欠点があった。In such conventional magnetism, a predetermined magnetic flux forms a closed magnetic loop, but most of the magnetic flux forms an open magnetic loop. That is,
Since the magnetic flux generated from the main pole 1a and the magnetic layer 1a' leaks onto the magnetic recording medium 3, there is a drawback that the recording efficiency decreases.
本発明は、前記欠点を除去するだめにがされたものであ
り、その特徴は、高透磁率磁性膜からなる主磁極を中央
部に設け、該主磁極を中心にして渦巻状に高透磁性材か
らなる補助磁極を配設したことにある。The present invention has been made to eliminate the above-mentioned drawbacks, and is characterized by providing a main magnetic pole made of a high magnetic permeability magnetic film in the center, and spirally forming a high magnetic permeability film around the main magnetic pole. This is due to the provision of auxiliary magnetic poles made of material.
以下、実施例とともに本発明の詳細な説明する。Hereinafter, the present invention will be described in detail along with examples.
第2図は、本発明の一実施例の構成を示す斜視図である
。本実施例の磁気へ、ドは、第2図に示すように、中央
部に主磁極10を設け、この主磁極10を中心にして補
助磁極11を渦巻状に配設し、この補助磁極11の所定
の位置に記録再生用コイル12を巻いたものである。1
6は垂直磁気記録媒体である。FIG. 2 is a perspective view showing the configuration of an embodiment of the present invention. As shown in FIG. 2, the magnetism of this embodiment is such that a main magnetic pole 10 is provided in the center, and auxiliary magnetic poles 11 are arranged in a spiral shape around this main magnetic pole 10. A recording/reproducing coil 12 is wound around a predetermined position. 1
6 is a perpendicular magnetic recording medium.
前記主磁極10は、高透磁率磁性膜10aを非磁性体1
0bの側面にスバ、タリング等により形成し、その上に
他の非磁性体10cを接着したものである。また、補助
磁極11は、高透磁率の磁性材から々す、磁気抵抗を減
少するためにその断面積が大きく、かつ、主磁極10を
囲む渦巻状の形状である。そして、主磁極10と補助磁
極11は電気的磁気的に接続している。The main magnetic pole 10 includes a high magnetic permeability magnetic film 10a and a non-magnetic material 1.
It is formed on the side surface of 0b by sprue, talling, etc., and another non-magnetic material 10c is adhered thereon. The auxiliary magnetic pole 11 is made of a magnetic material with high magnetic permeability, has a large cross-sectional area in order to reduce magnetic resistance, and has a spiral shape surrounding the main magnetic pole 10. The main magnetic pole 10 and the auxiliary magnetic pole 11 are electrically and magnetically connected.
次に、本実施例の動作を説明する。Next, the operation of this embodiment will be explained.
第2図において、補助磁極11に巻かれた記録再生用コ
イル12に記録せしめる情報に対応した電流が与えられ
ると、破線で示す磁束14が、主磁極10の高透磁率磁
性膜10a→垂直磁気記録媒体13→補助磁極11→高
透磁率磁性膜10aで形成される閉磁気回路を透過する
。この磁束14により主磁極10の高透磁率磁性膜10
aの先端に対向する垂直磁気記録媒体13の磁性層の垂
直方向に前記電流に対応した情報が磁化される。In FIG. 2, when a current corresponding to information to be recorded is applied to the recording/reproducing coil 12 wound around the auxiliary magnetic pole 11, the magnetic flux 14 shown by the broken line changes from the high permeability magnetic film 10a of the main magnetic pole 10 to the perpendicular magnetic It passes through a closed magnetic circuit formed by the recording medium 13→auxiliary magnetic pole 11→high permeability magnetic film 10a. This magnetic flux 14 causes the high permeability magnetic film 10 of the main pole 10 to
Information corresponding to the current is magnetized in the perpendicular direction of the magnetic layer of the perpendicular magnetic recording medium 13 facing the tip of a.
このとき、前記磁束14のほとんどが垂直磁気記録媒体
16を通して主磁極10を囲んだ補助、磁極11に入り
、一群の閉磁気ループを形成するため主磁極10の高透
磁率磁性11[10aを先端に磁束14のすべてが集中
する。その結果記録効率が大幅に改善されることになる
。At this time, most of the magnetic flux 14 passes through the perpendicular magnetic recording medium 16 and enters the auxiliary magnetic pole 11 surrounding the main magnetic pole 10, forming a group of closed magnetic loops. All of the magnetic flux 14 is concentrated at . As a result, recording efficiency will be greatly improved.
なお、本発明は、前記実施例に限定されることなく、そ
の要旨を変更しない範囲において、適宜変形し得ること
は勿論である。例えば、実施例では、主磁極10をスバ
、タリングによる高透磁率磁性膜10 aと非磁性材1
0b、10cとで構成したが、先端が高透磁率磁性体で
かつ先細なものでもよい。It should be noted that the present invention is not limited to the embodiments described above, and can of course be modified as appropriate without changing the gist thereof. For example, in the embodiment, the main magnetic pole 10 is made of a high permeability magnetic film 10 a made of thin film and a non-magnetic material 1
0b and 10c, the tip may be made of a high permeability magnetic material and tapered.
以上説明した如く、本発明によれば、はぼ全磁束を一個
の閉磁気ループに形成するようにしたので、記録効率を
大幅に改善することができる。As explained above, according to the present invention, almost the entire magnetic flux is formed into one closed magnetic loop, so that recording efficiency can be greatly improved.
第1図(A)、(B)は、従来の垂直磁化方式における
磁気へ、ドの構成を示す図、第2図は、本発明の一実施
例の構成を示す斜視図である。
10 主磁極 11 補助磁極
用
12 記録再生コイル
△
13 垂直磁気記録媒体
14 磁束
代理人 弁理士 秋 1)収 喜
第(図
(A) (E3)a
」
第2図FIGS. 1A and 1B are diagrams showing the structure of a magnetic field in a conventional perpendicular magnetization method, and FIG. 2 is a perspective view showing the structure of an embodiment of the present invention. 10 Main magnetic pole 11 For auxiliary magnetic pole 12 Recording/reproducing coil △ 13 Perpendicular magnetic recording medium 14 Magnetic flux agent Patent attorney Aki 1) Collection Kidai (Figure (A) (E3) a ” Figure 2
Claims (1)
極を中心にして渦巻状に高透磁率磁性材からなる補助磁
極を配設したことを特徴とする垂直磁気記録へ、ド。Perpendicular magnetic recording characterized in that a main magnetic pole made of a high magnetic permeability magnetic film is provided in the center, and an auxiliary magnetic pole made of a high magnetic permeability magnetic material is arranged in a spiral shape around the main magnetic pole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3292082A JPS58150121A (en) | 1982-03-01 | 1982-03-01 | Vertical magnetic recording head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3292082A JPS58150121A (en) | 1982-03-01 | 1982-03-01 | Vertical magnetic recording head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58150121A true JPS58150121A (en) | 1983-09-06 |
Family
ID=12372330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3292082A Pending JPS58150121A (en) | 1982-03-01 | 1982-03-01 | Vertical magnetic recording head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58150121A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0214175A1 (en) * | 1985-01-22 | 1987-03-18 | Digital Equipment Corp | Vertical magnetic recording arrangement. |
US4740855A (en) * | 1985-10-18 | 1988-04-26 | Siemens Aktiengesellschaft | Magnetic thin-film head having a main and an auxiliary pole for vertical magnetization |
-
1982
- 1982-03-01 JP JP3292082A patent/JPS58150121A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0214175A1 (en) * | 1985-01-22 | 1987-03-18 | Digital Equipment Corp | Vertical magnetic recording arrangement. |
US4740855A (en) * | 1985-10-18 | 1988-04-26 | Siemens Aktiengesellschaft | Magnetic thin-film head having a main and an auxiliary pole for vertical magnetization |
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