JPH0581640A - Perpendicular magnetic recording medium and device - Google Patents
Perpendicular magnetic recording medium and deviceInfo
- Publication number
- JPH0581640A JPH0581640A JP3241185A JP24118591A JPH0581640A JP H0581640 A JPH0581640 A JP H0581640A JP 3241185 A JP3241185 A JP 3241185A JP 24118591 A JP24118591 A JP 24118591A JP H0581640 A JPH0581640 A JP H0581640A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- recording
- recording medium
- layer
- divided
- 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
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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/313—Disposition of layers
- G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
- G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
- G11B5/315—Shield layers on both sides of the main pole, e.g. in perpendicular magnetic heads
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Record Carriers (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はコンピュータの外部記憶
装置として使用される垂直磁気記録媒体及びこの媒体を
使用した磁気記録装置に関する。コンピュータ等の情報
処理装置の外部記憶用の機器として使用される磁気ディ
スク装置では、情報量の増加にともなって、媒体の記憶
密度を向上させること、記録及び再生の効率を向上する
こと、及び高信頼性を図ること等が要求されている。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a perpendicular magnetic recording medium used as an external storage device of a computer and a magnetic recording device using this medium. In a magnetic disk device used as a device for external storage of an information processing device such as a computer, the storage density of a medium is improved, the recording and reproduction efficiency is improved, and There is a demand for reliability.
【０００２】近年、磁気ディスク装置の小型化、高密度
化に伴い、従来の水平磁気記録を上回る高密度の磁気記
録方式として、垂直磁気記録方式が注目されている。垂
直記録方式の代表的な例としては、非磁性の基板上に軟
磁性層を介し垂直磁化記録層を積層して二重構造とした
垂直磁気記録媒体を使用する方式がある。この種の垂直
記録媒体を使用した記録方式では、記録再生ヘッドとし
て単磁極タイプを用いる場合、ヘッドから媒体へ更にヘ
ッドへと戻る磁束ループを構成するとともに、その磁束
を書き込み／読出用のコイルに効率良く導くことが要求
される。[0002] In recent years, with the miniaturization and higher density of magnetic disk devices, the perpendicular magnetic recording method has been attracting attention as a high-density magnetic recording method that exceeds conventional horizontal magnetic recording. As a typical example of the perpendicular recording system, there is a system using a perpendicular magnetic recording medium having a double structure in which a perpendicular magnetization recording layer is laminated on a non-magnetic substrate with a soft magnetic layer interposed therebetween. In the recording method using the perpendicular recording medium of this kind, when a single magnetic pole type is used as the recording / reproducing head, a magnetic flux loop returning from the head to the medium and further back to the head is constructed, and the magnetic flux is used as a write / read coil. Efficient guidance is required.
【０００３】[0003]
【従来の技術】図１〜図３に従来の垂直磁気記録装置、
即ち、垂直磁気記録用の磁気媒体及び磁気ヘッドの組み
合わせから成る垂直磁気記録装置を示す。これらの図に
おいて、１０は垂直磁気記録媒体、１１は基板、１２は
軟磁性層、１３は記録層、２０は単磁極ヘッド、２１は
主磁極、２２はコイル、２３はガラス溝、２４はフェラ
イトブロック（ヨーク）である。1 to 3 show a conventional perpendicular magnetic recording device,
That is, it shows a perpendicular magnetic recording apparatus including a combination of a magnetic medium for perpendicular magnetic recording and a magnetic head. In these figures, 10 is a perpendicular magnetic recording medium, 11 is a substrate, 12 is a soft magnetic layer, 13 is a recording layer, 20 is a single pole head, 21 is a main pole, 22 is a coil, 23 is a glass groove, and 24 is a ferrite. It is a block (yoke).
【０００４】垂直磁気記録媒体１０は二重膜構造で、非
磁性基板１１上にパーマロイ（ＮｉＦｅ）等の高透磁率
層（軟磁性層）１２を介してＣｏＣｒ等の垂直磁化記録
層１３を形成したものである。一方、単磁極ヘッド２０
は、先端が媒体１０の面に近接して設けられたパーマロ
イ（ＮｉＦｅ）等の軟磁性膜からなる主磁極部２１と、
Ｃｕ等からなる記録再生用コイル２２、及び磁束のリタ
ーンパスとスライダ機能を兼ねるフェライトブロック
（ヨーク）２４からなり、このブロック２４の一部にガ
ラス溝２３が形成されている。The perpendicular magnetic recording medium 10 has a double film structure, and a perpendicular magnetic recording layer 13 such as CoCr is formed on a non-magnetic substrate 11 via a high magnetic permeability layer (soft magnetic layer) 12 such as permalloy (NiFe). It was done. On the other hand, the single pole head 20
Is a main magnetic pole portion 21 made of a soft magnetic film such as permalloy (NiFe) whose tip is provided close to the surface of the medium 10,
The recording / reproducing coil 22 is made of Cu or the like, and the ferrite block (yoke) 24 has a magnetic flux return path and a slider function. A glass groove 23 is formed in a part of the block 24.
【０００５】図３に示すように、作動にあたっては、媒
体１０の高透磁率層（軟磁性層）１２は記録再生ヘッド
２０のフェライトブロック（ヨーク）２４と共に磁束の
リターンパス１４を形成し、記録再生効率の向上に大き
く寄与する。As shown in FIG. 3, in operation, the high-permeability layer (soft magnetic layer) 12 of the medium 10 forms a magnetic flux return path 14 together with the ferrite block (yoke) 24 of the recording / reproducing head 20 to perform recording. It greatly contributes to the improvement of regeneration efficiency.
【０００６】[0006]
【発明が解決しようとする課題】ところで、上述の従来
の垂直磁気記録装置、即ちヘッド・媒体系において、よ
り高い記録再生効率を実現するためには、主磁極２１、
記録層１３、高誘磁率層１２、及びフェライトブロック
２４からなる磁気回路を可能な限り閉磁路にすることが
必要となる。しかし、従来の垂直磁気記録媒体１０の構
造のままでは、リターンパス１４となる高誘磁率層１２
とフェライトブロック２４との間に磁気的にハード材で
ある垂直記録層１３が存在するため、実質的には開磁路
となり、その記録再生効率にも限界が生じていた。In order to achieve higher recording / reproducing efficiency in the above-described conventional perpendicular magnetic recording device, that is, the head / medium system, the main magnetic pole 21,
It is necessary to make the magnetic circuit composed of the recording layer 13, the high magnetic susceptibility layer 12 and the ferrite block 24 as closed magnetic circuit as possible. However, with the structure of the conventional perpendicular magnetic recording medium 10 as it is, the high magnetic susceptibility layer 12 to be the return path 14 is formed.
Since the perpendicular recording layer 13 which is a magnetically hard material exists between the magnetic recording medium and the ferrite block 24, the magnetic recording medium is practically an open magnetic circuit, and its recording / reproducing efficiency is limited.
【０００７】また、垂直磁気記録方式では、記録再生ヘ
ッド２０と媒体１０の表面との間の空隙をより狭くしな
ければならないことは良く知られており、その究極の形
態として期待されている方式にヘッド・媒体におけるコ
ンタクトレコーディングがある。しかし、このコンタク
トレコーディングは、接触によって媒体面又はヘッド面
に磨耗が生じるという問題がある。したがって、この磨
耗をいかに少なくするかということが重要となる。Further, in the perpendicular magnetic recording system, it is well known that the gap between the recording / reproducing head 20 and the surface of the medium 10 must be made narrower, and the system expected as the ultimate form thereof. There is contact recording in the head and medium. However, this contact recording has a problem in that the medium surface or the head surface is worn by the contact. Therefore, how to reduce this wear is important.
【０００８】以上のことより、従来の垂直磁気記録装置
では、ヘッド・媒体間で接触記録を行うと、記録層１３
に主磁極２１が接触し磁極のエッジ部分からノイズを拾
い易く、また記録を乱す等の問題がある。また、接触を
避けるために磁極表面を非磁性体で被うと、記録・再生
効率が低下するという問題が生じる。本発明は、上記問
題点に鑑み、従来の垂直磁気記録媒体に比べて、記録・
再生効率を向上させた垂直磁気記録媒体及びこの媒体を
使用する磁気記録装置を提供することを目的とする。From the above, in the conventional perpendicular magnetic recording apparatus, when contact recording is performed between the head and the medium, the recording layer 13 is formed.
There is a problem that the main magnetic pole 21 comes into contact with the main magnetic pole 21 to easily pick up noise from the edge portion of the magnetic pole and disturbs recording. Further, if the surface of the magnetic pole is covered with a non-magnetic material to avoid contact, there is a problem that recording / reproducing efficiency is reduced. In view of the above problems, the present invention provides a recording / recording medium as compared with a conventional perpendicular magnetic recording medium.
An object of the present invention is to provide a perpendicular magnetic recording medium with improved reproduction efficiency and a magnetic recording device using this medium.
【０００９】[0009]
【課題を解決するための手段】このような課題を解決す
るために、本発明によれば、図４に示すように、非磁性
のディスク基板（１１）上に軟磁性層（１２）を介して
垂直磁化記録層（１３）を積層し、該記録層を所定幅で
同心円状に分割し、さらに分割した記録層間の非データ
領域（１５）を軟磁性材（１６）で充填したことを特徴
とする垂直磁気記録媒体が提供される。In order to solve such a problem, according to the present invention, as shown in FIG. 4, a soft magnetic layer (12) is provided on a non-magnetic disk substrate (11). A perpendicular magnetization recording layer (13) is laminated, the recording layer is divided into concentric circles with a predetermined width, and the non-data area (15) between the divided recording layers is filled with a soft magnetic material (16). A perpendicular magnetic recording medium is provided.
【００１０】また、本発明によれば、図５及び図６に示
すように、非磁性のディスク基板（１１）上に軟磁性層
（１２）を介して垂直磁化記録層（１３）を積層し、該
記録層を所定幅で同心円状に分割し、さらに分割した記
録層間の非データ領域（１５）を軟磁性材（１６）で充
填して成る垂直磁気記録媒体（１）と、記録再生用コイ
ル（２２）と組み合わせた主磁極（２１）を、その先端
が媒体（１）と対抗する面に露出するように設け、主磁
極（２１）と磁気的に結合している補助磁極（２５）を
媒体対抗面に露出させ、該補助磁極の露出部を複数に分
割し、分割された個々の補助磁極の露出部の幅が、前記
記録媒体（１）の溝部（１５）に埋め込まれた同心円状
の軟磁性部分（１６）の幅と等しくし、主磁極（２１）
の幅を分割された垂直記録層（１３）の幅に対応させ、
更に該補助磁極（２５）の媒体記録層（１３）に対抗す
る部分を非磁性の対磨耗材料（２６）で埋め込んでなる
磁気ヘッド（２）と、を組み合わせたことを特徴とする
垂直磁気記録装置が提供される。Further, according to the present invention, as shown in FIGS. 5 and 6, a perpendicular magnetization recording layer (13) is laminated on a non-magnetic disk substrate (11) via a soft magnetic layer (12). A perpendicular magnetic recording medium (1) in which the recording layer is divided into concentric circles with a predetermined width, and the non-data area (15) between the divided recording layers is filled with a soft magnetic material (16); A main magnetic pole (21) combined with a coil (22) is provided with its tip exposed on the surface facing the medium (1), and an auxiliary magnetic pole (25) magnetically coupled to the main magnetic pole (21). Exposed on the medium facing surface, the exposed portion of the auxiliary magnetic pole is divided into a plurality, and the width of the exposed portion of each divided auxiliary magnetic pole is a concentric circle embedded in the groove (15) of the recording medium (1). The same as the width of the soft magnetic part (16), and the main pole (21)
Corresponding to the width of the divided perpendicular recording layer (13),
Further, the perpendicular magnetic recording is characterized in that a part of the auxiliary magnetic pole (25) facing the medium recording layer (13) is combined with a magnetic head (2) in which a non-magnetic antiwear material (26) is embedded. A device is provided.
【００１１】[0011]
【作用】本発明の垂直磁気記録媒体では、分割した記録
層（１３）間の非データ領域（１５）（即ち、ガードバ
ンド領域）に軟磁性材（１６）が存在するため、主磁極
（２１）、記録層（１３）、軟磁性層ないし高透磁率層
（１２）、及びこのガードバンド領域の軟磁性材（１
６）、フェライトブロック（２４）からなる理想的な閉
磁気回路の形成が可能となり、記録再生効率が著しく改
善される。また、非データ領域（１５）に軟磁性材（１
６）と非磁性材（１８）とを組み合わせたものを充填
し、この非磁性材（１８）として硬質材を用いることに
より磁気ヘッドスライダの摺動、衝突等に対する保護が
十分に確保され、媒体面の耐衝撃性も高められる。In the perpendicular magnetic recording medium of the present invention, since the soft magnetic material (16) exists in the non-data area (15) (that is, the guard band area) between the divided recording layers (13), the main magnetic pole (21). ), The recording layer (13), the soft magnetic layer or the high magnetic permeability layer (12), and the soft magnetic material (1) in the guard band region.
6), an ideal closed magnetic circuit composed of the ferrite block (24) can be formed, and the recording / reproducing efficiency is remarkably improved. In addition, the soft magnetic material (1
By filling a combination of 6) and a non-magnetic material (18) and using a hard material as the non-magnetic material (18), the magnetic head slider is sufficiently protected against sliding, collision, etc. The impact resistance of the surface is also improved.
【００１２】[0012]
【実施例】以下、本発明の実施例について詳細に説明す
る。図４は本発明の垂直磁気記録媒体の実施例１を一部
断面で示した要部斜視図である。垂直磁気記録媒体１
は、ガラス材からなる非磁性基板１１上にパーマロイ
（ＮｉＦｅ）等からなる高透磁率磁性層１２と、その表
面にＣｏＣｒ等からなる垂直磁気記録層１３を積層させ
た二重構造である。また、上記記録層１３は例えば半径
方向に対してデータトラック幅に相当する所定幅ごとに
分割され、その分割された同心円状の記録層１３の間の
非データ領域１５にパーマロイ（ＮｉＦｅ）等からなる
軟磁性材１６を充填している。EXAMPLES Examples of the present invention will be described in detail below. FIG. 4 is a perspective view of a main part of a first embodiment of a perpendicular magnetic recording medium of the present invention, which is partially shown in cross section. Perpendicular magnetic recording medium 1
Is a double structure in which a high-permeability magnetic layer 12 made of permalloy (NiFe) or the like and a perpendicular magnetic recording layer 13 made of CoCr or the like are stacked on a non-magnetic substrate 11 made of a glass material. Further, the recording layer 13 is divided into predetermined widths corresponding to the data track width in the radial direction, and the non-data area 15 between the divided concentric recording layers 13 is made of permalloy (NiFe) or the like. Is filled with the soft magnetic material 16.
【００１３】図５は本発明の垂直磁気記録装置、即ち媒
体・ヘッド系の実施例の正面図であり、図６は同実施例
を図５の矢印VIから見た図である。これらの図におい
て、２はヘッド、２１は主磁極、２２はコイル、２３は
ガラス溝、２４はフェライトブロック、２５は非磁性体
埋め込み部分である。記録再生ヘッド２は、コイル２２
と組み合わせた主磁極２１を、その先端が媒体１と対抗
する面に露出するように設けている。後方で主磁極２１
と磁気的に結合している補助磁極２５は媒体１と対抗す
る面に露出されている。この補助磁極２５の露出部は複
数に分割され、分割された個々の補助磁極２５の露出部
の幅が、記録媒体１の非データ領域１５に埋め込まれた
同心円状の軟磁性部分１６の幅と等しくしている。ま
た、ディスク媒体１の半径方向に関する主磁極２１の幅
を、分割された垂直記録層１３の幅に対応させ、更に補
助磁極２５の媒体対抗面に非磁性の耐磨耗材料２６を埋
め込んで構成される。FIG. 5 is a front view of an embodiment of the perpendicular magnetic recording apparatus of the present invention, that is, a medium / head system, and FIG. 6 is a view of the embodiment as seen from the arrow VI of FIG. In these figures, 2 is a head, 21 is a main pole, 22 is a coil, 23 is a glass groove, 24 is a ferrite block, and 25 is a non-magnetic material embedded portion. The recording / reproducing head 2 has a coil 22.
The main magnetic pole 21 combined with is provided so that its tip is exposed on the surface facing the medium 1. Main pole 21 at the rear
The auxiliary magnetic pole 25 that is magnetically coupled with is exposed on the surface facing the medium 1. The exposed portion of the auxiliary magnetic pole 25 is divided into a plurality of portions, and the width of the divided exposed portion of each auxiliary magnetic pole 25 is equal to the width of the concentric soft magnetic portion 16 embedded in the non-data area 15 of the recording medium 1. Are equal. Further, the width of the main magnetic pole 21 in the radial direction of the disk medium 1 is made to correspond to the width of the divided perpendicular recording layer 13, and a non-magnetic abrasion resistant material 26 is embedded in the medium facing surface of the auxiliary magnetic pole 25. To be done.
【００１４】したがって、図５及び図６で示すように、
このような構成をもつ本実施例の垂直磁気記録媒体１と
単磁極型ヘッド２を用いれば、分割した記録層１３間の
非データ領域１５（即ち、ガードバンド領域）に軟磁性
材１６が存在するため、主磁極２１、記録層１３、軟磁
性層ないし高透磁率層１２、及びこのガードバンド領域
の軟磁性材１６、フェライトブロック２４からなる理想
的な閉磁気回路１７の形成が可能となり、記録再生効率
が著しく改善される。Therefore, as shown in FIGS. 5 and 6,
By using the perpendicular magnetic recording medium 1 and the single pole type head 2 of this embodiment having such a configuration, the soft magnetic material 16 exists in the non-data area 15 (that is, the guard band area) between the divided recording layers 13. Therefore, it is possible to form an ideal closed magnetic circuit 17 including the main magnetic pole 21, the recording layer 13, the soft magnetic layer or the high magnetic permeability layer 12, the soft magnetic material 16 in the guard band region, and the ferrite block 24. The recording / reproducing efficiency is significantly improved.
【００１５】図７は本発明の垂直磁気記録媒体の実施例
２を示した断面図である。この媒体１ｂでは、記録部分
１３と軟磁性部分１６の表面を同一保護膜３１で覆って
いる。保護膜３１は１００Å以下と薄膜であるのが望ま
しい。これにより、垂直磁気記録媒体の耐久性を上げる
ことができる。図８は本発明の垂直磁気記録媒体の実施
例３を示した断面図である。この媒体１ｃでは、保護膜
３１の表面を更に潤滑層３２が覆っている。これによ
り、垂直磁気記録媒体の耐久性が更に向上する。FIG. 7 is a sectional view showing a second embodiment of the perpendicular magnetic recording medium of the present invention. In this medium 1b, the surfaces of the recording portion 13 and the soft magnetic portion 16 are covered with the same protective film 31. The protective film 31 is preferably a thin film having a thickness of 100 Å or less. Thereby, the durability of the perpendicular magnetic recording medium can be improved. FIG. 8 is a sectional view showing Example 3 of the perpendicular magnetic recording medium of the present invention. In this medium 1c, the surface of the protective film 31 is further covered with the lubricating layer 32. This further improves the durability of the perpendicular magnetic recording medium.
【００１６】具体的には、この実施例の垂直磁気記録媒
体１ｃを製作する場合において、同心円上の軟磁性部分
１６を多孔質化し潤滑材３２を含浸させてもよい。例え
ば、記録層１３としたがってＣｏＣｒを使用し、軟磁性
層１６としてＮｉＦｅを用い、希硝酸でエッチングし軟
磁性層１６を多孔質化した。この時、ＣｏＣｒの記録層
１３全くエッチングされなかった。この上に、ふっ化カ
ーボン系液体潤滑材３２を塗布した。このように、記録
再生ヘッドとの接触面をエッチングにより多孔化し、潤
滑材を塗布することにより耐久性を向上させる効果があ
る。Specifically, when manufacturing the perpendicular magnetic recording medium 1c of this embodiment, the concentric soft magnetic portions 16 may be made porous and impregnated with the lubricant 32. For example, the recording layer 13 and therefore CoCr were used, NiFe was used as the soft magnetic layer 16, and the soft magnetic layer 16 was made porous by etching with dilute nitric acid. At this time, the CoCr recording layer 13 was not etched at all. On this, a carbon fluoride liquid lubricant 32 was applied. As described above, the contact surface with the recording / reproducing head is made porous by etching, and the lubricant is applied, so that the durability is improved.
【００１７】図９は本発明の垂直磁気記録媒体の実施例
４を一部断面で示した要部斜視図である。図４に示した
実施例１と異なる点は、非データ領域１５を軟磁性材１
６とＴｉ等からなる非磁性材１８を組み合わせて充填し
たことである。即ち、溝状の非データ領域１５の中央部
に軟磁性材１６は配設し、その両側にＴｉ等からなる非
磁性材１８を組み込んだ。これにより、主磁極２１（図
５及び６）から発生する半径方向の磁束が広がり（図１
０）を抑制することが可能となる（図１１）。更に、非
磁性材１８として硬質のＳｉＯ2 或いはAl2O3 材を用い
れば、磁気ヘッド２のスライダの摺動、衝突等に対しの
保護が十分に確保され、媒体面の耐衝撃性も高めること
が可能となる。FIG. 9 is a perspective view showing a principal part of a fourth embodiment of the perpendicular magnetic recording medium of the present invention, which is partially sectioned. The difference from the first embodiment shown in FIG. 4 is that the non-data area 15 is formed by the soft magnetic material 1.
6 and the non-magnetic material 18 made of Ti or the like are combined and filled. That is, the soft magnetic material 16 was disposed in the center of the groove-shaped non-data area 15, and the non-magnetic material 18 made of Ti or the like was incorporated on both sides thereof. As a result, the magnetic flux in the radial direction generated from the main magnetic pole 21 (FIGS. 5 and 6) spreads (see FIG. 1).
0) can be suppressed (FIG. 11). Furthermore, if a hard SiO 2 or Al 2 O 3 material is used as the non-magnetic material 18, sufficient protection is ensured against sliding and collision of the slider of the magnetic head 2 and the impact resistance of the medium surface is also enhanced. It becomes possible.
【００１８】なお、以上説明した本発明の垂直磁気記録
媒体１は従来のスパッタリング、蒸着等の薄膜形成法に
加えて、レジストパターニングとエッチング等からなる
フォトリソグラフィー技術を用いることにより製作が可
能である。一方、記録再生ヘッド２において、非磁性材
料２６の表面を多孔質化し、潤滑材を含浸させることも
できる。この場合において、非磁性材料２６としてガラ
スを用い、埋め込み、表面を研磨した後、ＣＦ4 プラズ
マでエッチングし多孔質化した。このとき磁極材として
用いたＮｉＦｅはエッチングされない。この上にふっ化
カーボン系液体潤滑材を塗布した。The perpendicular magnetic recording medium 1 of the present invention described above can be manufactured by using a photolithography technique including resist patterning and etching in addition to conventional thin film forming methods such as sputtering and vapor deposition. .. On the other hand, in the recording / reproducing head 2, the surface of the non-magnetic material 26 may be made porous and impregnated with a lubricant. In this case, glass was used as the non-magnetic material 26, embedded, the surface was polished, and then made porous by etching with CF 4 plasma. At this time, NiFe used as the magnetic pole material is not etched. A carbon fluoride type liquid lubricant was applied on this.
【００１９】また、記録再生ヘッド２において、非磁性
材料２６の表面及び補助磁極２５の表面を多孔質化し、
潤滑材を含浸させることもできる。前記と同様の方法
で、ＮｉＦｅを多孔質化した後、非磁性材（ガラス）を
多孔質化し、この上にふっ化カーボン系液体潤滑材を塗
布した。In the recording / reproducing head 2, the surface of the nonmagnetic material 26 and the surface of the auxiliary magnetic pole 25 are made porous.
It can also be impregnated with a lubricant. After the NiFe was made porous by the same method as described above, the non-magnetic material (glass) was made porous, and the fluorocarbon-based liquid lubricant was applied onto the NiFe.
【００２０】[0020]
【発明の効果】以上説明したように、本発明では、分割
した記録層１３間の非データ領域１５に軟磁性材１６が
存在するため、主磁極２１、記録層１３、軟磁性層ない
し高誘磁率層１２、及び非データ領域の軟磁性材１６、
フェライトブロック２４からなる理想的な閉磁気回路の
形成がされるため、記録再生効率・耐衝撃性に優れた垂
直磁気記録媒体が実現でき、磁気ディスク装置の小型化
・大容量化及び高信頼性に寄与するところが大きい。As described above, in the present invention, since the soft magnetic material 16 is present in the non-data area 15 between the divided recording layers 13, the main magnetic pole 21, the recording layer 13, the soft magnetic layer or the high magnetic field is provided. The magnetic susceptibility layer 12, and the soft magnetic material 16 in the non-data area,
Since the ideal closed magnetic circuit composed of the ferrite block 24 is formed, a perpendicular magnetic recording medium excellent in recording / reproducing efficiency and impact resistance can be realized, and the magnetic disk device can be made compact, have a large capacity, and have high reliability. It greatly contributes to.
【図１】従来の垂直磁気記録装置の概略断面図である。FIG. 1 is a schematic cross-sectional view of a conventional perpendicular magnetic recording device.
【図２】図１の矢印IIから見た従来の垂直磁気記録装置
の図である。FIG. 2 is a diagram of a conventional perpendicular magnetic recording device as seen from an arrow II in FIG.
【図３】図２の線III −III における断面図で、従来の
垂直磁気記録装置を示す。3 is a sectional view taken along line III-III in FIG. 2, showing a conventional perpendicular magnetic recording apparatus.
【図４】本発明の垂直磁気記録装置で使用する磁気記録
媒体の実施例を示す。FIG. 4 shows an embodiment of a magnetic recording medium used in the perpendicular magnetic recording apparatus of the present invention.
【図５】本発明の実施例にかかる垂直磁気記録装置の断
面図である。FIG. 5 is a sectional view of a perpendicular magnetic recording apparatus according to an example of the present invention.
【図６】図５の矢印VIから見た図で、本発明の垂直磁気
記録装置の１実施例を示す。FIG. 6 is a view seen from an arrow VI in FIG. 5, showing one embodiment of the perpendicular magnetic recording apparatus of the present invention.
【図７】媒体の表面を保護膜で覆った本発明の１実施例
の断面図である。FIG. 7 is a cross-sectional view of one embodiment of the present invention in which the surface of the medium is covered with a protective film.
【図８】媒体の保護膜表面を更に潤滑材で覆った本発明
の他の実施例の断面図である。FIG. 8 is a cross-sectional view of another embodiment of the present invention in which the surface of the protective film of the medium is further covered with a lubricant.
【図９】本発明の垂直磁気記録装置で使用する他の磁気
記録媒体の実施例を示す。FIG. 9 shows an embodiment of another magnetic recording medium used in the perpendicular magnetic recording apparatus of the present invention.
【図１０】本発明の垂直磁気記録媒体と単磁極ヘッドの
組み合わせによる記録再生の状態を示す図である。FIG. 10 is a diagram showing a recording / reproducing state by a combination of the perpendicular magnetic recording medium of the present invention and a single magnetic pole head.
【図１１】本発明の垂磁気記録媒体と単磁極ヘッドの組
み合わせによる記録再生の状態の他の実施例を示す図で
ある。FIG. 11 is a diagram showing another embodiment of the recording / reproducing state by the combination of the perpendicular magnetic recording medium of the present invention and the single pole head.
１…垂直磁気記録媒体 １１…ディスク基板 １２…軟磁性体 １３…既知記録層 １５…非データ領域 １６…軟磁性材 １７…磁束の流れ ２…ヘッド ２１…主磁極 ２２…コイル ２３…ガラス溝 ２４…ヨーク ２５…補助磁極 DESCRIPTION OF SYMBOLS 1 ... Perpendicular magnetic recording medium 11 ... Disk substrate 12 ... Soft magnetic material 13 ... Known recording layer 15 ... Non-data area 16 ... Soft magnetic material 17 ... Flow of magnetic flux 2 ... Head 21 ... Main magnetic pole 22 ... Coil 23 ... Glass groove 24 … Yoke 25… Auxiliary magnetic pole
───────────────────────────────────────────────────── フロントページの続き (72)発明者 貝津 功剛 神奈川県川崎市中原区上小田中1015番地 富士通株式会社内 (72)発明者 金井 均 神奈川県川崎市中原区上小田中1015番地 富士通株式会社内 (72)発明者 笠松 祥治 神奈川県川崎市中原区上小田中1015番地 富士通株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kouji Kaitsu 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Within Fujitsu Limited (72) Inventor Hitoshi Kanai 1015 Kamedota, Nakahara-ku, Kawasaki, Kanagawa within Fujitsu Limited (72) Inventor Shoji Kasamatsu 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Within Fujitsu Limited
Claims (7)
性層（１２）を介して垂直磁化記録層（１３）を積層
し、該記録層を所定幅で同心円状に分割し、さらに分割
した記録層間の非データ領域（１５）を軟磁性材（１
６）で充填したことを特徴とする垂直磁気記録媒体。1. A perpendicular magnetization recording layer (13) is laminated on a non-magnetic disk substrate (11) via a soft magnetic layer (12), and the recording layer is divided into concentric circles with a predetermined width, and further divided. The non-data area (15) between the recording layers is recorded with a soft magnetic material (1
A perpendicular magnetic recording medium filled with 6).
録装置の記録トラック幅と等しいことを特徴とする請求
項１に記載の垂直磁気記録媒体。2. The perpendicular magnetic recording medium according to claim 1, wherein the predetermined width is equal to a recording track width of a magnetic recording device using the medium.
５）を、軟磁性材（１６）と非磁性材（１８）とを組み
合わせて充填したことを特徴とする請求項１又は２に記
載の垂直磁気記録媒体。3. A non-data area (1) between recording layers (13)
The perpendicular magnetic recording medium according to claim 1 or 2, wherein the soft magnetic material (16) and the non-magnetic material (18) are combined and filled in 5).
特徴とする請求項３に記載の垂直磁気記録媒体。4. The perpendicular magnetic recording medium according to claim 3, wherein the non-magnetic material (18) is a hard material.
６）を充填し又は軟磁性材（１６）と非磁性材（１８）
とを組み合わせて充填した部分の表面を同一の保護膜
（３１）で覆ったことを特徴とする請求項１〜４のいず
れか１項に記載の垂直磁気記録媒体。5. A portion of the recording layer (13) and a soft magnetic material (1
6) filled with soft magnetic material (16) and non-magnetic material (18)
The perpendicular magnetic recording medium according to any one of claims 1 to 4, wherein the surface of the portion filled with the combination of and is covered with the same protective film (31).
２）で覆ったことを特徴とする請求項５に記載の垂直磁
気記録媒体。6. The surface of the protective film (31) is further provided with a lubricating film (3).
6. The perpendicular magnetic recording medium according to claim 5, which is covered with 2).
性層（１２）を介して垂直磁化記録層（１３）を積層
し、該記録層を所定幅で同心円状に分割し、さらに分割
した記録層間の非データ領域（１５）を軟磁性材（１
６）で充填して成る垂直磁気記録媒体（１）と、 記録再生用コイル（２２）と組み合わせた主磁極（２
１）を、その先端が媒体（１）と対抗する面に露出する
ように設け、主磁極（２１）と磁気的に結合している補
助磁極（２５）を媒体対抗面に露出させ、該補助磁極の
露出部を複数に分割し、分割された個々の補助磁極の露
出部の幅が、前記記録媒体（１）の溝部（１５）に埋め
込まれた同心円状の軟磁性部分（１６）の幅と等しく
し、主磁極（２１）の幅を分割された垂直記録層（１
３）の幅に対応させ、更に該補助磁極（２５）の媒体記
録層（１３）に対抗する部分を非磁性の対磨耗材料（２
６）で埋め込んでなる磁気ヘッド（２）と、を組み合わ
せたことを特徴とする垂直磁気記録装置。7. A perpendicular magnetization recording layer (13) is laminated on a non-magnetic disk substrate (11) via a soft magnetic layer (12), and the recording layer is divided into concentric circles with a predetermined width, and further divided. The non-data area (15) between the recording layers is recorded with a soft magnetic material (1
A perpendicular magnetic recording medium (1) filled with 6) and a main magnetic pole (2) combined with a recording / reproducing coil (22).
1) is provided so that its tip is exposed on the surface facing the medium (1), and the auxiliary magnetic pole (25) magnetically coupled to the main magnetic pole (21) is exposed on the medium facing surface. The exposed portion of the magnetic pole is divided into a plurality of portions, and the width of the divided exposed portion of each auxiliary magnetic pole is the width of the concentric soft magnetic portion (16) embedded in the groove (15) of the recording medium (1). And the width of the main pole (21) is divided into the perpendicular recording layer (1
3) and the portion of the auxiliary magnetic pole (25) facing the medium recording layer (13) is made of a non-magnetic anti-wear material (2).
6. A perpendicular magnetic recording device characterized in that a magnetic head (2) embedded in 6) is combined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3241185A JP3057586B2 (en) | 1991-09-20 | 1991-09-20 | Perpendicular magnetic recording medium and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3241185A JP3057586B2 (en) | 1991-09-20 | 1991-09-20 | Perpendicular magnetic recording medium and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0581640A true JPH0581640A (en) | 1993-04-02 |
| JP3057586B2 JP3057586B2 (en) | 2000-06-26 |
Family
ID=17070493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3241185A Expired - Fee Related JP3057586B2 (en) | 1991-09-20 | 1991-09-20 | Perpendicular magnetic recording medium and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3057586B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6773782B2 (en) | 1999-05-28 | 2004-08-10 | Fujitsu Limited | Magnetic memory medium having a magnetic film laminated on a substrate and a non-magnetic film formed thereon, and method of manufacturing the same |
| US7067207B2 (en) | 2002-11-08 | 2006-06-27 | Kabushiki Kaisha Toshiba | Magnetic recording medium having a patterned soft magnetic layer |
| CN100349213C (en) * | 2004-08-23 | 2007-11-14 | Tdk股份有限公司 | Magnetic recording medium and magnetic recording/reproducing apparatus |
| US8034413B2 (en) | 2007-11-09 | 2011-10-11 | Fuji Electric Co., Ltd. | Method for manufacturing magnetic recording media |
-
1991
- 1991-09-20 JP JP3241185A patent/JP3057586B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6773782B2 (en) | 1999-05-28 | 2004-08-10 | Fujitsu Limited | Magnetic memory medium having a magnetic film laminated on a substrate and a non-magnetic film formed thereon, and method of manufacturing the same |
| US7067207B2 (en) | 2002-11-08 | 2006-06-27 | Kabushiki Kaisha Toshiba | Magnetic recording medium having a patterned soft magnetic layer |
| CN100349213C (en) * | 2004-08-23 | 2007-11-14 | Tdk股份有限公司 | Magnetic recording medium and magnetic recording/reproducing apparatus |
| US8034413B2 (en) | 2007-11-09 | 2011-10-11 | Fuji Electric Co., Ltd. | Method for manufacturing magnetic recording media |
| US8470391B2 (en) | 2007-11-09 | 2013-06-25 | Fuji Electric Co., Ltd. | Magnetic recording media |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3057586B2 (en) | 2000-06-26 |
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