JPH0684164A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPH0684164A
JPH0684164A JP23344292A JP23344292A JPH0684164A JP H0684164 A JPH0684164 A JP H0684164A JP 23344292 A JP23344292 A JP 23344292A JP 23344292 A JP23344292 A JP 23344292A JP H0684164 A JPH0684164 A JP H0684164A
Authority
JP
Japan
Prior art keywords
lubricating oil
magnetic recording
recording medium
lubricant
lubricating
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
Application number
JP23344292A
Other languages
Japanese (ja)
Other versions
JP3044940B2 (en
Inventor
Takashi Fukuchi
▲隆▼ 福地
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP23344292A priority Critical patent/JP3044940B2/en
Publication of JPH0684164A publication Critical patent/JPH0684164A/en
Application granted granted Critical
Publication of JP3044940B2 publication Critical patent/JP3044940B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Lubricants (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To maintain the initial lubricating effect even under severe application condition by rigidly fixing a lubricant on a protection film through a lubricant fixing layer. CONSTITUTION:Coupling of Pt-OEP and a protection film and PFH-NH2 on a carbon protection film of a magnetic recording medium is shown. In an embodiment, octaethylporphyrin-platinum complex (abbreviated as Pt-OEP) is used as a substance to form a lubricant fixing layer, while 1-amino- pentadecafluoroheptane (PFH-NH2) as a lubricant. The molecule planes of Pt-OEP 2 are closely overlapped at the plane of the graphite structure 1 within a carbon protection film of the magnetic recording medium, moreover the molecule plane of Pt-OEP 2 is also closely overlapped and the platinum atom of Pt-OEP 2 is chemically combined with PFH-NH2 3. As explained, a lubricant thin film provided on a magnetic recording medium perfectly covers the medium surface with its lubricant fixing layer. The lubricant is conditioned to be fixed on the fixing layer and thereby the lubricant is never peeled from the medium surface.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、磁気記録媒体に関し、
特にその潤滑薄膜に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording medium,
Particularly, it relates to the lubricating thin film.

【0002】[0002]

【従来の技術】近年、磁気記録装置の技術動向は記録容
量を増大させるために媒体上のヘッドの浮上量をより小
さくする方向に進んでいる。これに伴いヘッドと媒体と
が衝突して記録されたデータが破損する、いわゆるヘッ
ドクラッシュが多発するようになった。このヘッドクラ
ッシュはスライダージンバル系の異常振動や媒体のうね
り、媒体上へのダストの付着等、種々の機械的要因が重
なり合い、さらに潤滑薄膜の潤滑効果が低下したときに
起こると考えられている。潤滑効果の低下はおもに潤滑
油が保護膜上から剥離することによって起こるが、従
来、磁気記録媒体の潤滑油は保護膜上に直接成膜されて
おり、潤滑油が保護膜上から剥離することは不可避の問
題であった。
2. Description of the Related Art In recent years, the technical trend of magnetic recording devices has been in the direction of reducing the flying height of a head on a medium in order to increase the recording capacity. As a result, the head and the medium collide with each other and the recorded data is damaged, so-called head crash frequently occurs. It is considered that this head crash occurs when various mechanical factors such as abnormal vibration of the slider gimbal system, waviness of the medium, adhesion of dust on the medium, and the like further reduce the lubricating effect of the lubricating thin film. The deterioration of the lubrication effect mainly occurs when the lubricating oil peels off from the protective film, but conventionally, the lubricating oil of the magnetic recording medium is directly formed on the protective film, and the lubricating oil peels off from the protective film. Was an unavoidable problem.

【0003】[0003]

【発明が解決しようとする課題】上述した従来の磁気記
録媒体において、潤滑油が保護膜上から剥離する原因
は、潤滑油が直接保護膜上に成膜される結果、カーボン
保護膜と潤滑油分子との間に強固な結合が生成し得ない
ためである。
In the above-described conventional magnetic recording medium, the cause of the lubricating oil peeling off from the protective film is that the lubricating oil is directly formed on the protective film, resulting in the carbon protective film and the lubricating oil. This is because a strong bond cannot be formed with the molecule.

【0004】本発明の目的は、潤滑油を潤滑油固定層を
介して保護膜上に強固に固定することにより、上記の欠
点を解消し、過酷な使用条件においても潤滑油が媒体上
から剥離することがなく、初期の潤滑効果が維持される
潤滑薄膜を有する磁気記録媒体を提供することにある。
The object of the present invention is to fix the lubricating oil firmly on the protective film via the lubricating oil fixing layer, thereby eliminating the above-mentioned drawbacks and allowing the lubricating oil to separate from the medium even under severe operating conditions. It is an object of the present invention to provide a magnetic recording medium having a lubricating thin film that maintains the initial lubrication effect without causing the above problem.

【0005】[0005]

【課題を解決するための手段】本第一の発明の磁気記録
媒体は、少なくとも部分的にグラファイト構造を有する
カーボン保護膜上に成膜される潤滑油固定層と、潤滑油
固定層と化学結合を形成する潤滑油とから構成される潤
滑薄膜を有している。
A magnetic recording medium according to the first aspect of the present invention comprises a lubricating oil fixing layer formed on a carbon protective film having a graphite structure at least partially, and a chemical bonding with the lubricating oil fixing layer. Has a lubricating thin film composed of a lubricating oil that forms

【0006】本第二の発明の磁気記録媒体は、少なくと
も部分的にグラファイト構造を有するカーボン保護膜上
に成膜される潤滑油固定層と、潤滑油固定層と包接化合
物を形成する潤滑油とから構成される潤滑薄膜を有して
いる。
A magnetic recording medium according to the second aspect of the present invention is a lubricating oil fixing layer formed on a carbon protective film having a graphite structure at least partially, and a lubricating oil forming an inclusion compound with the lubricating oil fixing layer. It has a lubricating thin film composed of

【0007】[0007]

【作用】本発明の磁気記録媒体用潤滑薄膜は2種類の薄
膜層から構成されている。
The lubricating thin film for magnetic recording media of the present invention is composed of two types of thin film layers.

【0008】第1の薄膜層は潤滑油固定層であり、この
層を形成する物質の分子平面上に分布するπ電子は、保
護膜中に存在するカーボンのグラファイト構造の分子平
面上に分布するπ電子と相互作用する性質を有してい
る。そして、π電子同士の相互作用により両者が強固に
密着する結果、潤滑油固定層は保護膜上から容易に離反
しない性質を有することになる。さらに、潤滑油固定層
はその分子中に潤滑油分子と化学結合を形成するか、あ
るいは包接化合物を形成する分子構造を有している。こ
の潤滑油固定層を形成する物質としては、例えばフタロ
シアニン誘導体やポルフィリン誘導体などの多環芳香族
化合物を挙げることができるが、これらの例に限定され
るものではない。第2の薄膜層は潤滑油であり、これは
上記潤滑油固定層上に成膜されて、磁気記録媒体の最表
面を成すものである。この潤滑油はその分子中に上記潤
滑油固定層を形成する物質と化学結合をつくるか、ある
いは包接化合物をつくる分子構造を有している。潤滑油
としては、例えばパーフルオロアルキルアミンやカリッ
クスアレーンのパーフルオロアルキル誘導体を挙げるこ
とができるが、これらの例に限定されるものではない。
The first thin film layer is a lubricating oil fixing layer, and the π electrons distributed on the molecular plane of the substance forming this layer are distributed on the molecular plane of the graphite structure of carbon present in the protective film. It has the property of interacting with π electrons. Then, as a result of the π electrons interacting strongly with each other, the lubricating oil fixing layer has the property of not easily separating from the protective film. Further, the lubricating oil fixed layer has a molecular structure that forms a chemical bond with the lubricating oil molecule or forms an inclusion compound in its molecule. Examples of the substance forming the lubricating oil fixing layer include polycyclic aromatic compounds such as phthalocyanine derivatives and porphyrin derivatives, but are not limited to these examples. The second thin film layer is lubricating oil, which is formed on the lubricating oil fixed layer to form the outermost surface of the magnetic recording medium. This lubricating oil has a molecular structure which forms a chemical bond with the substance forming the above-mentioned lubricating oil fixing layer or forms an inclusion compound in its molecule. Examples of the lubricating oil include, but are not limited to, perfluoroalkylamine and perfluoroalkyl derivatives of calixarene.

【0009】[0009]

【実施例】次に、本発明の実施例について図面を参照し
て説明する。
Embodiments of the present invention will now be described with reference to the drawings.

【0010】図1は本発明の一実施例の磁気記録媒体の
潤滑膜を形成する物質の分子構造図、図1(A)は本実
施例の磁気記録媒体の潤滑膜に係る潤滑油PFH−NH
2 の分子構造図、図1(B)は本実施例の磁気記録媒体
の潤滑膜の潤滑油固定層を形成するの化合物Pt−OE
Pの分子構造図、図2は本実施例の磁気記録媒体のカー
ボン保護膜上でPt−OEPが保護膜およびPFH−N
2 と結合したときの様子を示す概略図である。
FIG. 1 is a molecular structure diagram of a substance forming a lubricating film of a magnetic recording medium according to one embodiment of the present invention, and FIG. 1A is a lubricating oil PFH- relating to the lubricating film of the magnetic recording medium of this embodiment. NH
2 is a molecular structure diagram of FIG. 1, FIG. 1 (B) is a compound Pt-OE for forming a lubricating oil fixing layer of the lubricating film of the magnetic recording medium of this embodiment.
FIG. 2 is a molecular structure diagram of P, and FIG. 2 shows Pt-OEP as a protective film and PFH-N on the carbon protective film of the magnetic recording medium of this example.
FIG. 3 is a schematic diagram showing a state when combined with H 2 .

【0011】ここで、一実施例として潤滑油固定層を形
成する物質としはオクタエチルポルフィリン−白金錯塩
(以下、Pt−OEPと略記する)を、潤滑油としては
1−アミノ−ペンタデカフルオロヘプタン(PFH−N
2 )を用いる。
Here, as one example, octaethylporphyrin-platinum complex salt (hereinafter abbreviated as Pt-OEP) is used as the substance forming the lubricating oil fixed layer, and 1-amino-pentadecafluoroheptane is used as the lubricating oil. (PFH-N
H 2 ) is used.

【0012】また、図1の(A)および(B)は、本発
明に係る潤滑薄膜の一実施例であるPFH−NH2 3お
よびPt−OEP2の分子構造を示しており、図2は磁
気記録媒体のカーボン保護膜中のグラファイト構造1の
平面にPt−OEP2の分子平面が重なり合って密着
し、さらにこのPt−OEP2中の白金原子とPFH−
NH2 3が化学結合したときの様子を示している。
1A and 1B show the molecular structures of PFH-NH 2 3 and Pt-OEP 2, which are examples of the lubricating thin film according to the present invention, and FIG. The plane of the graphite structure 1 in the carbon protective film of the recording medium is superposed and adhered to the plane of the molecule of Pt-OEP2, and the platinum atom in this Pt-OEP2 and PFH-
The state when NH 2 3 is chemically bonded is shown.

【0013】潤滑薄膜の形成方法としては、磁気記録媒
体のカーボン保護膜1上に先ず潤滑油固定層を成膜す
る。成膜法は塗布法、蒸着法、スパッタ法等の方法で行
うことができる。図1(B)に示すように、潤滑油固定
層の成分であるPt−OEP2は複数の芳香環が縮合た
多環芳香族化合物であり、その分子平面が、図2に示す
ように、カーボン保護膜に含まれるグラファイト構造の
分子平面と重なり合って強固に密着する。
As a method of forming the lubricating thin film, a lubricating oil fixing layer is first formed on the carbon protective film 1 of the magnetic recording medium. The film forming method can be performed by a coating method, a vapor deposition method, a sputtering method, or the like. As shown in FIG. 1 (B), Pt-OEP2, which is a component of the lubricating oil fixed layer, is a polycyclic aromatic compound in which a plurality of aromatic rings are condensed, and its molecular plane is carbon as shown in FIG. The molecular plane of the graphite structure contained in the protective film overlaps and firmly adheres.

【0014】次に上記のようにして成膜された潤滑油固
定層の上に潤滑油であるPFH−NH2 3を成膜する。
図1(A)に示すように、PFH−NH2 3は末端にN
2基を有する直鎖状フッ化アルキルであり、この末端
NH2 基がPt−OEP2の白金原子と反応して化学結
合が形成されることにより、図2に示すように、PFH
−NH2 3がPt−OEP2上に固定される。このよう
にして磁気記録媒体上に設けられた潤滑薄膜は、媒体表
面を潤滑油固定層が完全に覆い、さらにこの潤滑油固定
層に潤滑油が固定された状態になっており、潤滑油が媒
体表面から剥離することを防いでいる。
Next, PFH-NH 2 3 which is a lubricating oil is formed on the lubricating oil fixed layer formed as described above.
As shown in FIG. 1 (A), PFH-NH 2 3 has N at the end.
It is a linear alkyl fluoride having an H 2 group, and this terminal NH 2 group reacts with a platinum atom of Pt—OEP2 to form a chemical bond, so that as shown in FIG.
-NH 2 3 is fixed on Pt-OEP2. In this way, the lubricating thin film provided on the magnetic recording medium is such that the surface of the medium is completely covered with the lubricating oil fixed layer, and the lubricating oil is fixed to this lubricating oil fixed layer. It prevents peeling from the medium surface.

【0015】次に、潤滑油の固定方法について潤滑薄膜
の例をあげて詳細について説明する。
Next, the method of fixing the lubricating oil will be described in detail by taking an example of a lubricating thin film.

【0016】例1 PFH−NH2 /Pt−OEP系潤滑薄膜 潤滑薄膜の形成は次のように行った。スパッタカーボン
保護膜を有する5インチ磁気記録媒体上にPt−OEP
のクロロホルム溶液(濃度0.1%)を用いてスピンコ
ート法により潤滑油固定層の成膜を行った。媒体回転数
は3000rpmとした。自然乾燥により溶媒を除去し
た後、100℃で1時間焼成して潤滑油固定層とカーボ
ン保護膜とを密着させ、その後、媒体表面をクロロホル
ムで洗浄して余分のPt−OEPを除去した。このよう
にして成膜された潤滑油固定層の膜厚は30オングスト
ロームであった。
[0016] Example 1 PFH-NH 2 / Pt- OEP system formation of a lubricating film lubrication film was performed as follows. Pt-OEP on a 5-inch magnetic recording medium having a sputtered carbon protective film
A lubricating oil fixed layer was formed by a spin coating method using the chloroform solution (concentration: 0.1%). The medium rotation speed was 3000 rpm. After the solvent was removed by natural drying, the lubricating oil fixed layer was adhered to the carbon protective film by firing at 100 ° C. for 1 hour, and then the surface of the medium was washed with chloroform to remove excess Pt-OEP. The thickness of the lubricating oil fixed layer thus formed was 30 Å.

【0017】次に潤滑油固定層の上にPFH−NH2
エタノール溶液(濃度0.05%)を用いてスピンコー
ト法により潤滑油層を成膜した。媒体回転数は3500
rpmとした。自然乾燥により溶媒を除去した後、70
℃で3時間焼成して潤滑油固定層と潤滑油との間に化学
結合を形成させ、その後、媒体表面をエタノールで洗浄
して余分のPFH−NH2 を除去した。成膜された潤滑
油層の膜厚は25オングストロームであった。
Next, a lubricating oil layer was formed on the fixed lubricating oil layer by spin coating using an ethanol solution of PFH-NH 2 (concentration: 0.05%). Medium speed is 3500
rpm. After removing the solvent by natural drying, 70
The mixture was calcined at ℃ for 3 hours to form a chemical bond between the fixed layer of lubricating oil and the lubricating oil, and then the surface of the medium was washed with ethanol to remove excess PFH-NH 2 . The film thickness of the formed lubricating oil layer was 25 Å.

【0018】このようにして形成した磁気記録媒体上の
潤滑薄膜に対してコンタクトスタートアンドストップ
(CSS)試験を10000回繰り返して行い、その前
後の摩擦係数を測定した結果、試験前0.11、試験後
0.15であった。また、CSS試験後の潤滑油層の膜
厚は20オングストロームであった。この試験結果か
ら、本発明に係るPFH−NH2 /Pt−OEP系潤滑
薄膜は過酷なCSS試験の後においてもその摩擦係数に
大きな変化はなく、また、潤滑油層の膜厚減少も僅かで
あるので、潤滑薄膜の媒体上からの剥離が殆ど起こって
いないことがわかった。 例2 ウンデカフルオロシクロヘキサン−1−アミン(UFC
H−NH2 )/カルボニル鉄フタロシアニン(Fe−P
c)系潤滑薄膜 潤滑薄膜の形成は次のように行った。スパッタカーボン
保護膜を有する5インチ磁気記録媒体上にFe−Pcの
クロロホルム溶液(濃度0.1%)を用いてスピンコー
ト法により潤滑油固定層の成膜を行った。媒体回転数は
3000rpmとした。自然乾燥により溶媒を除去した
後、100℃で1時間焼成して潤滑油固定層とカーボン
保護膜とを密着させ、その後、媒体表面をクロロホルム
30mlで洗浄して余分のFe−Pcを除去した。この
ようにして成膜された潤滑油固定層の膜厚は35オング
ストロームであった。
A contact start-and-stop (CSS) test was repeated 10,000 times on the lubricating thin film on the magnetic recording medium thus formed, and the friction coefficient before and after the test was measured. It was 0.15 after the test. The film thickness of the lubricating oil layer after the CSS test was 20 Å. From these test results, the PFH-NH 2 / Pt-OEP lubricating thin film according to the present invention has no significant change in its friction coefficient even after the severe CSS test, and the thickness of the lubricating oil layer is slightly reduced. Therefore, it was found that the peeling of the lubricating thin film from the medium hardly occurred. Example 2 Undecafluorocyclohexan-1-amine (UFC
H-NH 2) / carbonyl iron phthalocyanine (Fe-P
c) System lubricating thin film The lubricating thin film was formed as follows. A lubricating oil fixed layer was formed on a 5-inch magnetic recording medium having a sputtered carbon protective film by spin coating using a chloroform solution of Fe-Pc (concentration 0.1%). The medium rotation speed was 3000 rpm. After removing the solvent by natural drying, the lubricating oil fixed layer was adhered to the carbon protective film by firing at 100 ° C. for 1 hour, and then the medium surface was washed with 30 ml of chloroform to remove excess Fe—Pc. The thickness of the lubricating oil fixed layer thus formed was 35 Å.

【0019】次に潤滑油固定層の上にUFCH−NH2
のエタノール溶液(濃度0.05%)を用いてスピンコ
ート法により潤滑油層を成膜した。媒体回転数は350
0rpmとした。自然乾燥により溶媒を除去した後、7
0℃で3時間焼成して潤滑油固定層と潤滑油との間に化
学結合を形成させ、その後、媒体表面をエタノールで洗
浄して余分のUFCH−NH2 を除去した。成膜された
潤滑油層の膜厚は25オングストロームであった。
Next, UFCH-NH 2 was formed on the lubricating oil fixed layer.
A lubricating oil layer was formed by spin coating using the ethanol solution (concentration: 0.05%). Medium speed is 350
It was set to 0 rpm. After removing the solvent by natural drying, 7
It was calcined at 0 ° C. for 3 hours to form a chemical bond between the fixed layer of lubricating oil and the lubricating oil, and then the surface of the medium was washed with ethanol to remove excess UFCH-NH 2 . The film thickness of the formed lubricating oil layer was 25 Å.

【0020】このようにして形成した磁気記録媒体上の
潤滑薄膜に対してCSS試験を10000回繰り返して
行い、その前後の摩擦係数を測定した結果、試験前0.
12、試験後0.15であった。また、CSS試験後の
潤滑油層の膜厚は20オングストロームであった。この
試験結果から、本発明に係るUFCH−NH2 /Fe−
Pc系潤滑薄膜は過酷なCSS試験の後においてもその
摩擦係数に大きな変化はなく、また、潤滑油層の膜厚減
少も僅かであるので、潤滑薄膜の媒体上からの剥離が殆
ど起こっていないことがわかった。 例3 ペンタデカフルオロヘプタン−カリックス[6]アレー
ンアセチル誘導体(PFCA)/ニトロシルルテニウム
フタロシアニン(Ru−Pc)系潤滑薄膜 潤滑薄膜の形成は次のように行った。スパッタカーボン
保護膜を有する5インチ磁気記録媒体上にRu−Pcの
アセトン溶液(濃度0.1%)を用いてスピンコート法
により潤滑油固定層の成膜を行った。媒体回転数は30
00rpmとした。自然乾燥により溶媒を除去した後、
100℃で1時間焼成して潤滑油固定層と保護膜を強固
に密着させ、その後、媒体表面をアセトンで洗浄して余
分のRu−Pcを除去した。このようにして成膜された
潤滑油固定層の膜厚は20オングストロームであった。
The CSS test was repeated 10,000 times on the lubricating thin film thus formed on the magnetic recording medium, and the friction coefficient before and after the CSS test was measured.
12, which was 0.15 after the test. The film thickness of the lubricating oil layer after the CSS test was 20 Å. From the test results, UFCH-NH 2 according to the present invention / Fe-
The friction coefficient of the Pc-based lubricating thin film did not change significantly even after the severe CSS test, and the film thickness of the lubricating oil layer was slightly reduced. Therefore, the lubricating thin film hardly peeled from the medium. I understood. Example 3 Pentadecafluoroheptane-calix [6] areneacetyl derivative (PFCA) / nitrosylruthenium phthalocyanine (Ru-Pc) -based lubricating thin film A lubricating thin film was formed as follows. A lubricating oil fixed layer was formed on a 5-inch magnetic recording medium having a sputtered carbon protective film by a spin coating method using an acetone solution of Ru-Pc (concentration: 0.1%). Medium speed is 30
It was set to 00 rpm. After removing the solvent by natural drying,
The lubricating oil fixed layer and the protective film were firmly adhered by firing at 100 ° C. for 1 hour, and then the surface of the medium was washed with acetone to remove excess Ru-Pc. The thickness of the lubricating oil fixed layer thus formed was 20 Å.

【0021】次に潤滑油固定層の上にPFCAのエタノ
ール溶液(濃度0.05%)を用いてスピンコート法に
より潤滑油層を成膜した。媒体回転数は3500rpm
とした。自然乾燥により溶媒を除去した後、100℃で
3時間焼成してPFCAの末端カリックス[6]アレー
ンアセチル誘導体にRu−Pcのニトロシル基を包接さ
せ、その後、媒体表面をアセトンで洗浄して余分のPF
CAを除去した。成膜された潤滑油層の膜厚は20オン
グストロームであった。
Then, a lubricating oil layer was formed on the lubricating oil fixed layer by spin coating using an ethanol solution of PFCA (concentration: 0.05%). Medium speed is 3500 rpm
And After removing the solvent by natural drying, the product was calcined at 100 ° C. for 3 hours to allow the terminal calix [6] areneacetyl derivative of PFCA to include the nitrosyl group of Ru—Pc, and then wash the medium surface with acetone to remove excess. PF
CA was removed. The film thickness of the formed lubricating oil layer was 20 Å.

【0022】このようにして形成した磁気記録媒体上の
潤滑薄膜に対してCSS試験を10000回繰り返して
行い、その前後の摩擦係数を測定した結果、試験前0.
13、試験後0.16であった。また、CSS試験後の
潤滑油層の膜厚は20オングストロームであった。この
試験結果から、本発明に係るPFCA/Ru−Pc系潤
滑薄膜は過酷なCSS試験の後においてもその摩擦係数
に大きな変化はなく、また、潤滑油層の減少も観測され
なかったので、潤滑薄膜の媒体上からの剥離が殆ど起こ
っていないことがわかった。
The CSS test was repeated 10,000 times on the lubricating thin film thus formed on the magnetic recording medium, and the friction coefficient before and after the CSS test was measured.
13 and 0.16 after the test. The film thickness of the lubricating oil layer after the CSS test was 20 Å. From these test results, the PFCA / Ru-Pc-based lubricating thin film according to the present invention showed no significant change in its friction coefficient even after the severe CSS test, and no reduction in the lubricating oil layer was observed. It was found that almost no peeling from the medium occurred.

【0023】[0023]

【発明の効果】以上説明したように、本発明の磁気記録
媒体は、潤滑油を潤滑油固定層を介して保護膜上に強固
に固定することにより、過酷な使用条件においても潤滑
油が媒体上から剥離することがなく、初期の潤滑効果が
維持されるという効果がある。
As described above, according to the magnetic recording medium of the present invention, the lubricating oil is firmly fixed on the protective film through the lubricating oil fixing layer, so that the lubricating oil is a medium even under severe operating conditions. There is an effect that the initial lubrication effect is maintained without peeling from the top.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例の磁気記録媒体の潤滑膜を形
成する物質の分子構造図である。図1(A)は本実施例
の磁気記録媒体の潤滑膜に係る潤滑油PFH−NH2
分子構造図である。図1(B)は本実施例の磁気記録媒
体の潤滑膜の潤滑油固定層を形成するの化合物Pt−O
EPの分子構造図である。
FIG. 1 is a molecular structure diagram of a substance forming a lubricating film of a magnetic recording medium according to an embodiment of the present invention. FIG. 1A is a molecular structure diagram of the lubricating oil PFH-NH 2 related to the lubricating film of the magnetic recording medium of this embodiment. FIG. 1B shows the compound Pt—O forming the lubricating oil fixing layer of the lubricating film of the magnetic recording medium of this example.
It is a molecular structure figure of EP.

【図2】本実施例の磁気記録媒体のカーボン保護膜上で
Pt−OEPが保護膜およびPFH−NH2 と結合した
ときの様子を示す概略図である。
FIG. 2 is a schematic view showing a state in which Pt-OEP is bonded to the protective film and PFH-NH 2 on the carbon protective film of the magnetic recording medium of this embodiment.

【符号の説明】[Explanation of symbols]

1 磁気記録媒体のカーボン保護膜のグラファイト構
造 2 Pt−OEP 3 PFH−NH
1 Graphite structure of carbon protective film of magnetic recording medium 2 Pt-OEP 3 PFH-NH 2

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 少なくとも部分的にグラファイト構造を
有するカーボン保護膜上に成膜される潤滑油固定層と、
前記潤滑油固定層と化学結合を形成する潤滑油とから構
成される潤滑薄膜を有することを特徴とする磁気記録媒
体。
1. A lubricating oil fixing layer formed on a carbon protective film at least partially having a graphite structure,
A magnetic recording medium comprising a lubricating thin film composed of the lubricating oil fixing layer and a lubricating oil forming a chemical bond.
【請求項2】 少なくとも部分的にグラファイト構造を
有するカーボン保護膜上に成膜される潤滑油固定層と、
前記潤滑油固定層と包接化合物を形成する潤滑油とから
構成される潤滑薄膜を有することを特徴とする磁気記録
媒体。
2. A lubricating oil fixing layer formed on a carbon protective film having a graphite structure at least partially,
A magnetic recording medium comprising a lubricating thin film composed of the lubricating oil fixing layer and a lubricating oil forming an inclusion compound.
JP23344292A 1992-09-01 1992-09-01 Magnetic recording media Expired - Fee Related JP3044940B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23344292A JP3044940B2 (en) 1992-09-01 1992-09-01 Magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23344292A JP3044940B2 (en) 1992-09-01 1992-09-01 Magnetic recording media

Publications (2)

Publication Number Publication Date
JPH0684164A true JPH0684164A (en) 1994-03-25
JP3044940B2 JP3044940B2 (en) 2000-05-22

Family

ID=16955111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23344292A Expired - Fee Related JP3044940B2 (en) 1992-09-01 1992-09-01 Magnetic recording media

Country Status (1)

Country Link
JP (1) JP3044940B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5536577A (en) * 1993-09-28 1996-07-16 Mitsubishi Chemical Corporation Magnetic recording medium comprising a protective layer and a lubricant layer which contains a host multidentate ligand and a guest reversibly trapped lubricant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5536577A (en) * 1993-09-28 1996-07-16 Mitsubishi Chemical Corporation Magnetic recording medium comprising a protective layer and a lubricant layer which contains a host multidentate ligand and a guest reversibly trapped lubricant
US5830577A (en) * 1993-09-28 1998-11-03 Mitsubishi Chemical Corporation Surface having a coating of a host multidentate ligand and a reversibly trapped lubricant

Also Published As

Publication number Publication date
JP3044940B2 (en) 2000-05-22

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