JPS61110302A - Magnetic recording system - Google Patents
Magnetic recording systemInfo
- Publication number
- JPS61110302A JPS61110302A JP59230075A JP23007584A JPS61110302A JP S61110302 A JPS61110302 A JP S61110302A JP 59230075 A JP59230075 A JP 59230075A JP 23007584 A JP23007584 A JP 23007584A JP S61110302 A JPS61110302 A JP S61110302A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic recording
- thin
- layer
- head
- medium
- 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
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 70
- 239000010410 layer Substances 0.000 claims abstract description 26
- 239000010409 thin film Substances 0.000 claims abstract description 17
- 239000011241 protective layer Substances 0.000 claims abstract description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 9
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000005294 ferromagnetic effect Effects 0.000 claims description 7
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910000684 Cobalt-chrome Inorganic materials 0.000 claims 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 claims 1
- 239000010952 cobalt-chrome Substances 0.000 claims 1
- 239000010408 film Substances 0.000 abstract description 6
- 230000005284 excitation Effects 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 4
- 229910000889 permalloy Inorganic materials 0.000 abstract description 3
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 238000010030 laminating Methods 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910017052 cobalt Inorganic materials 0.000 description 5
- 239000010941 cobalt Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- 241000030538 Thecla Species 0.000 description 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000000682 scanning probe acoustic microscopy Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- DJAVHZLSEKTYAD-UHFFFAOYSA-N [Cr].[Co].[Au] Chemical compound [Cr].[Co].[Au] DJAVHZLSEKTYAD-UHFFFAOYSA-N 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical group [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
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
-
- 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
-
- 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
-
- 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
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
-
- 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
- G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements
-
- 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/85—Coating a support with a magnetic layer by vapour deposition
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Record Carriers (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】
［利用分野］
本発明は強磁性金属を主成分とする金ＷＡ薄膜よりなる
記録層を有する薄膜型の磁気記録媒体に磁気記録情報を
記録再生する方式に関したものであり、更に詳しくは長
期使用にわたって安定した磁気記録再生を可能とした新
しい磁気記録再生方式％式％
近年高密度記録への要求はますます高くなり、従来のバ
インダーを用いた塗布型に替わるものとして、磁気記録
層として強磁性金属１１１１Ａを用いたもの、更には特
公昭５８−９１号公報等の如く垂直磁気異方性を有する
コバルト系合金薄膜を用いたもの等金ｉ＊ｉを記録層と
した薄膜型の磁気記録媒体が提案されている。しかし磁
気記録層としてかかる金属１ｉ１１！を用いた場合には
、磁気記録ヘッドとの摩擦抵抗が大きいために摩耗や損
傷を受けやすく耐久性に欠けるという難点がある。[Detailed Description of the Invention] [Field of Application] The present invention relates to a method for recording and reproducing magnetically recorded information on a thin film type magnetic recording medium having a recording layer made of a gold WA thin film whose main component is a ferromagnetic metal. Yes, and more specifically, a new magnetic recording and reproducing method that enables stable magnetic recording and reproducing over long periods of use.In recent years, the demand for high-density recording has become higher and higher, and as an alternative to the conventional coating type using a binder. , those using ferromagnetic metal 1111A as the magnetic recording layer, and furthermore those using a cobalt alloy thin film having perpendicular magnetic anisotropy as in Japanese Patent Publication No. 1982-91, etc., using gold i*i as the recording layer. A thin-film magnetic recording medium has been proposed. However, the metal 1i11 used as the magnetic recording layer! When using a magnetic recording head, there is a drawback that the frictional resistance between the magnetic recording head and the magnetic recording head is large, so that the magnetic recording head is susceptible to wear and damage and lacks durability.
このため従来より強磁性金ｆｆ！薄膜上に更に保護層と
して有機高分子、ａ硬度金属、セラミックス等を設けた
ものが種々提案されている。For this reason, ferromagnetic goldff! Various methods have been proposed in which organic polymers, a-hardness metals, ceramics, etc. are further provided as protective layers on the thin film.
しかしこれらｉｔｇｉ型の磁気記録媒体の耐摩耗性、即
ち磁気ヘッド上を繰返し走行させた時の磁気記録媒体の
寿命は従来の塗布型の磁気記録媒体にくらべて劣り、実
用上未だ充分ではない状態である。However, the wear resistance of these ITGI-type magnetic recording media, that is, the lifespan of the magnetic recording media when repeatedly run on a magnetic head, is inferior to that of conventional coating-type magnetic recording media, and is still not sufficient for practical use. It is.
また、磁気記録ヘッドとしては、従来の塗布型の磁気記
録媒体用として、記録媒体と暦動する面をチタン酸バリ
ウム等で構成したものが知られているが、これらは記録
再生の摺動において、媒体に傷を付けず、ヘッド摺動面
自体も摩耗しないもので、耐久性に優れたものが使われ
ている。しかし、前記の薄膜型の磁気記録媒体は、潤滑
剤等をしみ込ませて耐久性を上げている前述の塗布型媒
体とは異って記録層が潤滑剤がしみ込まない薄膜金ｇ層
からなるので、磁気記録ヘッドは記録媒体との廖動によ
り、損傷を受けやすく、またこの損傷により逆に記録媒
体にも傷が発生しゃすく耐久性に乏しいという欠点があ
った。In addition, magnetic recording heads for conventional coating-type magnetic recording media are known in which the surface that moves with the recording medium is made of barium titanate, etc., but these , which do not damage the media, do not wear out the head sliding surface itself, and are highly durable. However, unlike the above-mentioned coated media, which is impregnated with lubricant to increase durability, the thin-film magnetic recording medium has a recording layer made of a thin gold G layer that does not allow lubricant to penetrate. However, the magnetic recording head is easily damaged due to its movement with the recording medium, and this damage is also likely to cause scratches on the recording medium, resulting in poor durability.
［発明の目的］
本発明はかかる現状に鑑みなされたもので、耐久性に優
れた強磁性金属を主成分とする金属ｗＪＷＡよりなる記
録層を有する薄膜型の磁気記録媒体に情報を記録再生す
る磁気記録再生方式を目的としたものである。[Object of the Invention] The present invention has been made in view of the current situation, and is a method for recording and reproducing information on a thin-film magnetic recording medium having a recording layer made of metal wJWA whose main component is a highly durable ferromagnetic metal. It is intended for magnetic recording and reproducing systems.
［発明の構成１作用］
すなわち本発明は磁気記録媒体としては基体上に鉄、コ
バルト、ニッケル等の金属あるいはこれらの合金からな
る強磁性金属薄膜層を、垂直磁気異方性を有するコバル
ト系合金ｉ１１等からなる垂直記録用の金属薄Ｓ層を、
または鉄、パーマロイ。[Structure 1 of the invention] That is, the present invention provides a magnetic recording medium in which a ferromagnetic metal thin film layer made of metals such as iron, cobalt, nickel, or alloys thereof is formed on a substrate, and a cobalt-based alloy having perpendicular magnetic anisotropy is used as a magnetic recording medium. A thin metal S layer for perpendicular recording consisting of i11 etc.
Or iron, permalloy.
コバルト・ニオブ・ジルコン合金等の高透磁率を有する
金属層に続けてその上に前述のＩ直記録用の金属薄膜層
を順次形成したもの等のＲＭＪ型の磁気記録媒体におい
て、該金ＩＩ膜層上にＣＯ３Ｏ４よりなるコバルト酸化
物保護層を設けたものを用いる。In an RMJ type magnetic recording medium, such as one in which a metal thin film layer for I direct recording described above is sequentially formed on a metal layer having high magnetic permeability such as a cobalt-niobium-zircon alloy, the gold II film A cobalt oxide protective layer made of CO3O4 is provided on the layer.
ここで、ＣＯ３Ｏ４よりなるコバルト酸化物保護層とし
ては、更に好ましくはランダム配向した保ｖｉｍである
。又、コバルト酸化物のＣＯ３Ｏｇはコバルト金属を蒸
発源、ターゲットとして酸化性雰囲気下で真空蒸着法、
スパッタリング法等により形成される。なお、コバルト
酸化物であるＣＣｈ ０４の分析はオージェ電子分光法
（ＡＥＳ）。Here, the cobalt oxide protective layer made of CO3O4 is more preferably randomly oriented vim. In addition, cobalt oxide CO3Og is produced by vacuum evaporation in an oxidizing atmosphere using cobalt metal as an evaporation source and target.
It is formed by a sputtering method or the like. The cobalt oxide CCh 04 was analyzed using Auger electron spectroscopy (AES).
Ｘａ回折法（ＤＸ）が用いられた。Xa diffraction method (DX) was used.
そして、磁気記録ヘッドとしては磁気記録媒体との摺動
面をなすスライダ一部を高硬度（ビッカース硬度１９０
０〜２３Ｏ０ ）、緻密なチタンカーバイド含有アルミ
ナセラミックス（ＡｌＩ３Ｏ３ ・ＴＩＣ：アルミナ・
チタンカーバイド）で構成したものを用い、前述のＣＯ
３Ｏ４のコバルト酸化物保護層を設けた薄膜型の磁気記
録媒体と組合せて記録再生するものである。As a magnetic recording head, a part of the slider that forms the sliding surface with the magnetic recording medium is made of high hardness (Vickers hardness 190).
0~23O0), dense titanium carbide-containing alumina ceramics (AlI3O3 ・TIC: alumina ・
titanium carbide), and the CO
Recording and reproduction is performed in combination with a thin film type magnetic recording medium provided with a 3O4 cobalt oxide protective layer.
本発明は、強磁性の金属薄膜よりなる磁気記録層の上に
ＣＯ３Ｏａのコバルト酸化物保護層を設けた磁気記録媒
体と、アルミナチタンカーバイトで磁極を挾んだ磁気記
録ヘッドとの組合せではじめて非常に耐久性のあるｓｕ
ｎ型の磁気記録媒体の磁気記録再生方式を実現したもの
である。The present invention was first achieved by combining a magnetic recording medium in which a cobalt oxide protective layer of CO3Oa is provided on a magnetic recording layer made of a ferromagnetic metal thin film, and a magnetic recording head in which a magnetic pole is sandwiched between alumina titanium carbide. very durable su
This realizes a magnetic recording and reproducing method for an n-type magnetic recording medium.
以下に本発明の実施例を示す。Examples of the present invention are shown below.
第１図は本発明の垂直記録方式での一構成例を示すもの
で、１０はフロッピーディスク用のフレキシブル両面型
の垂直磁気記録媒体、２ｏは公知の主磁極励磁型の垂直
磁気記録ヘッドである。垂直磁気記録媒体１０は、厚さ
５０μ卯のポリエチレンテレフタレートフィルムを基体
１１とし、その両面に０．４μ風のニッケル鉄合金より
なる高透磁率金属薄膜層１２と、０．４μ肌のコバルト
・り０ム（り０ム： ２０ｗｔ％）の合金薄膜よりなる
垂直磁気記録層１３とを特開昭５７−１００６２７号公
報と同様の対向ターゲット式スパッタ法で順次積層し、
更にその上にコバルト金属をターゲットとし酸化性ガス
雰囲気下の公知の反応性スパッタリング法で３Ｏ０人の
コバルト酸化物ＣＯ３Ｏ４の保護層１４を積層したもの
を、直径５．２５インチに打ち抜いてフロッピーディス
クとしたものである。FIG. 1 shows a configuration example of the perpendicular recording system of the present invention, where 10 is a flexible double-sided perpendicular magnetic recording medium for floppy disks, and 2o is a known main pole excitation type perpendicular magnetic recording head. . The perpendicular magnetic recording medium 10 has a base 11 made of a polyethylene terephthalate film with a thickness of 50 μm, and on both sides thereof a high magnetic permeability metal thin film layer 12 made of a nickel-iron alloy with a thickness of 0.4 μm and a cobalt layer with a thickness of 0.4 μm. A perpendicular magnetic recording layer 13 made of an alloy thin film of 0.0 μm (20 wt %) was sequentially laminated by the facing target sputtering method similar to that in JP-A-57-100627.
Furthermore, a protective layer 14 of 3O0 cobalt oxide CO3O4 was laminated thereon using a known reactive sputtering method in an oxidizing gas atmosphere using cobalt metal as a target, and a floppy disk was punched out to a diameter of 5.25 inches. This is what I did.
一方垂直磁気記録ヘッド２０は、＄ｉ ３Ｏ０μｍ、厚
さ１μｍのパーマロイにニッケル・鉄）薄膜の主磁極２
１をマンガン・ジンクフェライトコア２２で支持すると
共に、励磁コイル２３で巻き、更に主磁極２１の先端部
を挾んで媒体と摺動する面にアルミナ・チタンカーバイ
トからなるスライダ一部２４を設けている（実施例）。On the other hand, the perpendicular magnetic recording head 20 has a main magnetic pole 2 made of a thin film of permalloy (nickel/iron) with a thickness of $i 300 μm and a thickness of 1 μm.
1 is supported by a manganese-zinc ferrite core 22 and wound with an excitation coil 23, and furthermore, a slider part 24 made of alumina-titanium carbide is provided on the surface that grips the tip of the main magnetic pole 21 and slides on the medium. (Example)
またスライダ一部２４の表面は５０ａｗ Ｒの曲率に研
磨されている。Further, the surface of the slider portion 24 is polished to a curvature of 50 aw R.
比較例として垂直磁気記録媒体として実施例と同じ構成
で保護層のみないもの、ヘッドとして実施例と同じ構成
でスライダ一部２４の材質にオプチカルガラス（ＢＫ７
）、チタン酸バリウムを用いたものを作成し、実施例と
共に耐久性評価を行なった。As a comparative example, a perpendicular magnetic recording medium with the same configuration as in the example but without the protective layer, and a head with the same configuration as in the example but with optical glass (BK7
), using barium titanate, was prepared and evaluated for durability along with the examples.
耐久性評価は、評価するヘッドをセットしたディスクド
ライブに評価する媒体をセットし、３Ｏ０ｒｐｍで３Ｏ
０万バス回転させる摺動テストの前後の媒体及びヘッド
の表面の粗れ具合で行なった。具体的には媒体について
は摺動テスト前後の表面性を表面粗さ計（ＳｔＪＲＦＣ
ＯＭ、東京精密側製）を用いて中心線平均粗さくＣＬＡ
）として求め、摺動後のＣＬＡ値を摺動面のＣＬＡ値で
除算した相対的表面粗さにより、一方ヘッドについては
摺動テスト後のスライダ一部の表面を前記表面粗さ計を
用いて測定しその最大摩耗深さを求めて行った。その結
果を次頁の表に示す。For durability evaluation, set the media to be evaluated in the disk drive with the head to be evaluated, and run 300 rpm at 300 rpm.
The roughness of the surface of the medium and head was evaluated before and after a sliding test with 00,000 bus rotations. Specifically, the surface quality of the media before and after the sliding test was measured using a surface roughness meter (StJRFC).
OM, manufactured by Tokyo Seimitsu) to obtain center line average roughness CLA
), and the relative surface roughness is calculated by dividing the CLA value after sliding by the CLA value of the sliding surface.On the other hand, for the head, the surface of a part of the slider after the sliding test is calculated using the surface roughness meter mentioned above. The maximum wear depth was determined by measurement. The results are shown in the table on the next page.
表から明らかの様に、本発明のコバルト酸化物ＣＯ３Ｏ
４による媒体の保護層とヘッドのスライダ一部にアルミ
ナ・チタンカーバイトを用いた組合せが媒体の表面粗さ
の変化がなく、ヘッドのスライダ一部にも傷がなく、３
Ｏ０万バスの摺動テストでは殆んど劣化がなく、比較例
のいづれに比しても最良の結果であり、高い耐久性を示
した。As is clear from the table, the cobalt oxide CO3O of the present invention
The combination of using alumina titanium carbide for the protective layer of the medium and a part of the head slider according to 4 does not change the surface roughness of the medium and there is no scratch on the part of the head slider.
In the 000,000 bus sliding test, there was almost no deterioration, which was the best result compared to any of the comparative examples, and showed high durability.
尚、本発明はその趣旨からいって、実施例に示したフロ
ッピーディスク及び垂直磁気記録媒体。Incidentally, the present invention covers the floppy disk and perpendicular magnetic recording medium shown in the examples.
垂直ヘッドを用いた垂直磁気記録方式に何等限定される
ものではなく、アルミナ酸化処理をしたアルミディスク
等所謂ハードディスク、磁気テープへの適用、鉄、コバ
ルト、ニッケル等張磁性金属ｆｉｌ１層よりなる面内磁
気記録用媒体とリングヘッドとを組み合せた面内磁気記
録方式にも適用出来る事は云うまでもない。The application is not limited to the perpendicular magnetic recording method using a perpendicular head, but it can also be applied to so-called hard disks such as aluminum disks treated with alumina oxidation, magnetic tapes, and in-plane recording methods consisting of one layer of isotonic magnetic metal film of iron, cobalt, and nickel. Needless to say, the present invention can also be applied to a longitudinal magnetic recording system that combines a magnetic recording medium and a ring head.
第１図は本発明の一つの構成例の説明図である。
１０：フレキシブル垂直磁気ディスク、２０：垂直磁気
記録ヘッド、 １１：基体、１２：高透磁率金属薄層、
１３：コバルト・クロム金、ｉＩＳ層、１４：００３Ｏ
４の保護層、 ２１：主１１極、２２：コ ア、 ２
３：励磁コイル、２４ニスライダ一部
手続補正書（自発）
昭和６０年２月ｌ 日FIG. 1 is an explanatory diagram of one configuration example of the present invention. 10: Flexible perpendicular magnetic disk, 20: Perpendicular magnetic recording head, 11: Substrate, 12: High magnetic permeability metal thin layer, 13: Cobalt chromium gold, iIS layer, 14: 003O
4 protective layer, 21: Main 11 poles, 22: Core, 2
3: Excitation coil, 24 Nislider partial procedural amendment (voluntary) February 1, 1985
Claims (1)
該記録層上にＣＯ＿３Ｏ＿４よりなるコバルト酸化物保
護層を設けた磁気記録媒体と、摺動する面がチタンカー
バイド含有アルミナセラミックスで構成された磁気記録
ヘッドを用いて、磁気記録再生を行う事を特徴とする磁
気記録方式。 ２）前記記録層が垂直磁気記録層である特許請求の範囲
第１項記載の磁気記録方式。 ３）前記垂直磁気記録層がコバルト−クロムを主成分と
する合金薄膜よりなる特許請求の範囲第２項記載の磁気
記録方式。[Claims] 1) forming a recording layer made of a ferromagnetic metal thin film on a substrate;
It is characterized by performing magnetic recording and reproduction using a magnetic recording medium in which a cobalt oxide protective layer made of CO_3O_4 is provided on the recording layer, and a magnetic recording head whose sliding surface is made of titanium carbide-containing alumina ceramics. A magnetic recording method. 2) The magnetic recording system according to claim 1, wherein the recording layer is a perpendicular magnetic recording layer. 3) The magnetic recording system according to claim 2, wherein the perpendicular magnetic recording layer is made of an alloy thin film containing cobalt-chromium as a main component.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59230075A JPS61110302A (en) | 1984-11-02 | 1984-11-02 | Magnetic recording system |
| EP85113929A EP0180242B1 (en) | 1984-11-02 | 1985-11-01 | Magnetic recording medium, method for producing the same, and method of recording and reproduction using the same and magnetic head |
| DE8585113929T DE3581482D1 (en) | 1984-11-02 | 1985-11-01 | MAGNETIC RECORDING MEDIUM, METHOD FOR THE PRODUCTION THEREOF AND METHOD FOR RECORDING AND PLAYBACK WITH THE SAME AND A MAGNETIC HEAD. |
| US07/077,097 US4865916A (en) | 1984-11-02 | 1987-07-22 | Magnetic recording medium method for producing the same, and method for recording and reproduction using the same and magnetic head |
| US07/471,668 US5013583A (en) | 1984-02-11 | 1990-01-24 | Method of producing a magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59230075A JPS61110302A (en) | 1984-11-02 | 1984-11-02 | Magnetic recording system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61110302A true JPS61110302A (en) | 1986-05-28 |
Family
ID=16902150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59230075A Pending JPS61110302A (en) | 1984-02-11 | 1984-11-02 | Magnetic recording system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61110302A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61196424A (en) * | 1985-02-26 | 1986-08-30 | Canon Inc | Magnetic recording medium |
| US7640939B2 (en) | 2004-04-16 | 2010-01-05 | L'oreal | Curler for natural section of hair |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4929445A (en) * | 1972-07-20 | 1974-03-15 | ||
| JPS55163665A (en) * | 1979-06-01 | 1980-12-19 | Ibm | Magnetic head slider |
| JPS5841439A (en) * | 1981-09-01 | 1983-03-10 | Matsushita Electric Ind Co Ltd | Magnetic recording medium and its manufacture |
-
1984
- 1984-11-02 JP JP59230075A patent/JPS61110302A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4929445A (en) * | 1972-07-20 | 1974-03-15 | ||
| JPS55163665A (en) * | 1979-06-01 | 1980-12-19 | Ibm | Magnetic head slider |
| JPS5841439A (en) * | 1981-09-01 | 1983-03-10 | Matsushita Electric Ind Co Ltd | Magnetic recording medium and its manufacture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61196424A (en) * | 1985-02-26 | 1986-08-30 | Canon Inc | Magnetic recording medium |
| US7640939B2 (en) | 2004-04-16 | 2010-01-05 | L'oreal | Curler for natural section of hair |
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