JPS63102024A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS63102024A JPS63102024A JP24779886A JP24779886A JPS63102024A JP S63102024 A JPS63102024 A JP S63102024A JP 24779886 A JP24779886 A JP 24779886A JP 24779886 A JP24779886 A JP 24779886A JP S63102024 A JPS63102024 A JP S63102024A
- Authority
- JP
- Japan
- Prior art keywords
- film
- alloy
- fine particle
- magnetic recording
- recording 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 25
- 239000010419 fine particle Substances 0.000 claims abstract description 14
- 229910000599 Cr alloy Inorganic materials 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 7
- 230000005415 magnetization Effects 0.000 claims description 7
- 238000004544 sputter deposition Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 229920000728 polyester Polymers 0.000 abstract description 2
- 229920001225 polyester resin Polymers 0.000 abstract description 2
- 239000004645 polyester resin Substances 0.000 abstract description 2
- 238000010894 electron beam technology Methods 0.000 abstract 2
- 238000007740 vapor deposition Methods 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 8
- -1 polyethylene terephthalate Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005566 electron beam evaporation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920006254 polymer film Polymers 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- ZTSDOGSKTICNPQ-UHFFFAOYSA-N 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,18-pentatriacontafluorooctadecanoic acid Chemical compound OC(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F ZTSDOGSKTICNPQ-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910020647 Co-O Inorganic materials 0.000 description 1
- 229910020704 Co—O Inorganic materials 0.000 description 1
- 229910020517 Co—Ti Inorganic materials 0.000 description 1
- 229910020515 Co—W Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910000108 silver(I,III) oxide Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、高密度磁気記録に適した垂直磁気記録用の磁
気記録媒体に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording medium for perpendicular magnetic recording suitable for high-density magnetic recording.
従来の技術
次の世代の高密度化を担う磁気記録技術として新しい垂
直磁気記録方式が注目されている〔外国論文誌：アイイ
ーイーイ トランザクションズオン マグネティクス（
ＩＫＥＥ ＴＲＡＮＳＡＣＴＩＯＮＳＯＮ ＭＡＧＮ
ＥＴＩＣ８）ｖｏｌ ０ＭＡＧ −１３、＆ −５。Conventional technology A new perpendicular magnetic recording method is attracting attention as a magnetic recording technology that will lead to higher density in the next generation [Foreign journal: IEE Transactions on Magnetics]
IKEE TRANSACTIONSON MAGN
ETIC8) vol 0MAG -13, & -5.
１）、ｐ、１２７２〜１２γ７（１９了７）〕。1), p, 1272-12γ7 (19ryo7)].
垂直記録では、媒体面に反平行磁化転移を形成させるの
で、磁化転移が極めて狭いものとなり、２ ヘー／
極めて高い密度の記録が可能となるが、この方式の実現
には垂直異方性を有する媒体を用いる必要があり、耐久
性と信号対雑音比（以下Ｃ／Ｎと記す）の大きさの両者
を満足せしめる媒体の量産技術の確立が重要である〔応
用磁気セミナ゛垂直磁気記録方式Ｉ＋ （６０年１２月
）〕。In perpendicular recording, an antiparallel magnetization transition is formed on the medium surface, so the magnetization transition becomes extremely narrow, making it possible to record at an extremely high density.However, this method requires perpendicular anisotropy. It is important to establish mass production technology for media that satisfies both durability and signal-to-noise ratio (hereinafter referred to as C/N) [Applied Magnetic Seminar, Perpendicular Magnetic Recording System I+]. (December 1960)].
垂直磁化膜を形成するのはスパッタリング法〔日本応用
磁気学会、第３９回研究会資料Ｐ、３１（１９８６））
、電子ビーム蒸着法〔電子通信学会論文誌、 Ｊ ６６
−Ｃ、／Ｆｉｉ１ 、 Ｐ、５５（１９８３））等で行
え、主としてＱｏ−Ｃｒ膜が検討されている。The perpendicular magnetization film is formed by sputtering method [Japan Society of Applied Magnetics, 39th Research Meeting Materials P, 31 (1986)]
, Electron beam evaporation method [Transactions of the Institute of Electronics and Communication Engineers, J 66
-C, /Fii1, P, 55 (1983)), and Qo-Cr films are mainly being studied.
磁気特性を改良する目的や、低温で磁気特性を得られる
ようにするためにＣｏ−Ｏｒに第３元素としてＴｉを添
加するもの（特開昭５９−１４６１７号公報）、ｐｔを
添加するもの（特開昭５９−１１６０５号公報）、Ｐを
添加（特開昭６９−１７２１５号公報）、Ｍｎを添加す
るもの（特開昭５９−６１０１２号公報）等が提案され
ている。For the purpose of improving magnetic properties or to obtain magnetic properties at low temperatures, Ti is added as a third element to Co-Or (Japanese Unexamined Patent Publication No. 14617/1983), and PT is added ( JP-A-59-11605), P-added (JP-A-69-17215), and Mn-added (JP-A-59-61012) have been proposed.
又一方では、高分子フィルム等の基板上に直接Ｃｏ−Ｏ
ｒ垂直磁化膜を形成するのではなく、下地３べ一
層として、クロム、ゲルマニウム等を配したものも提案
されている（特開昭Ｓ了−８９１９号公報）。On the other hand, Co-O is directly deposited on a substrate such as a polymer film.
Instead of forming an r-perpendicularly magnetized film, a structure in which chromium, germanium, etc. are arranged as a three-layer base layer has also been proposed (Japanese Patent Laid-Open Publication No. 8919/1989).
発明が解決しようとする問題点
しかしながら耐久性を向−トするために、微粒子塗布層
を配した上に上記した構成のものを試作しても十分なＣ
／Ｎを短波長で得ることができないといった問題があり
、更なる改善が空寸れていた。Problems to be Solved by the Invention However, in order to improve durability, even if a prototype with the above structure is made with a fine particle coating layer, sufficient C.
There was a problem that /N could not be obtained at a short wavelength, and further improvement was impossible.
本発明は上記した事情に鑑みなされたもので１耐久性と
Ｃ／Ｎをバランスよく改良した垂直磁気記録用の磁気テ
ープ、磁気ディスク等の磁気記録媒体を提供するもので
ある。The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a magnetic recording medium such as a magnetic tape or a magnetic disk for perpendicular magnetic recording, which has improved durability and C/N in a well-balanced manner.
問題点を解決するだめの子役
上記した問題点を解決するため本発明の磁気記録媒体は
、微粒子塗布層を配した基板１−にＴ１−Ｃｒ合金下地
層、Ｃｏ−Ｃｒ重直磁化膜を４１層したものである。Child actor to solve the problems In order to solve the above-mentioned problems, the magnetic recording medium of the present invention has a T1-Cr alloy underlayer and a Co-Cr double magnetization film 41 on a substrate 1- on which a fine particle coating layer is arranged. It is layered.
作用
本発明の磁気記録媒体は上記した構成により、微粒子塗
布層の形状の影響でＣｏ−Ｃｒの配向性が低下する作用
をＴｉ−Ｃｒ合金下地層が補修するため、形状効果によ
る耐久性向上を果たしてもＣ／Ｎの低下を防ぐことがで
きるのである。Function: The magnetic recording medium of the present invention has the above-described structure, so that the Ti-Cr alloy underlayer repairs the effect of reducing the orientation of Co-Cr due to the shape of the fine particle coating layer, so durability can be improved due to the shape effect. Even if it is true, it is possible to prevent a decrease in C/N.
実施例
以下、図面を参照して本発明の実施例について詳しく説
明する。図は本発明の実施例の磁気記録媒体の拡大断面
図である。図で１は基板で、ポリエチレンテレフタレー
ト、ポリフェニレンサルファイド、ポリカーボネート等
の平滑な高分子フィルム、アルミ・マグネシウム合金等
の研摩した非磁性板等を用いることができる。２は微粒
子塗布層テ、Ａｇ２Ｏ，、ＣａＯ，ＣａＣＯ３，カーボ
ン、 ＢａＳＯ４゜ムライト等の無機微粒子又はポリエ
ステル球、ポリエチレン球等の有機微粒子をポリエステ
ル樹脂。Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The figure is an enlarged sectional view of a magnetic recording medium according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a substrate, which may be a smooth polymer film made of polyethylene terephthalate, polyphenylene sulfide, polycarbonate, or the like, a polished nonmagnetic plate made of aluminum/magnesium alloy, or the like. 2 is a fine particle coating layer, inorganic fine particles such as Ag2O, CaO, CaCO3, carbon, BaSO4゜mulite, or organic fine particles such as polyester spheres, polyethylene spheres, etc., and polyester resin.
ポリウレタン樹脂、エポキシ樹脂等で分散固定し、中心
線平均粗さで０．００６〜Ｑ、１μｍの範囲で、適宜最
適化すればよい。３はＴｉ−Ｃｒ合金下地層でスパッタ
法、電子ビーム蒸着法等で形成することができ、膜厚は
０．０２μｍから０．１μｍが好ましい。又Ｔｉ：Ｃｒ
は原子％でＴ１が３ｏ〜７０％残りがＣｒとするのが好
ましい。４はＣｏ−Ｏｒ垂５ ノ、−
直磁化膜でスパッタ法はもとより１電子ビーノ、蒸着法
でも本発明の構成によれば十分望ましい特性を実現でき
るので、量産性は時に改善されるものであるといえる。It may be dispersed and fixed with polyurethane resin, epoxy resin, etc., and the center line average roughness may be optimized as appropriate within the range of 0.006 to Q, 1 μm. 3 is a Ti-Cr alloy base layer which can be formed by sputtering, electron beam evaporation, etc., and preferably has a thickness of 0.02 μm to 0.1 μm. Also, Ti:Cr
It is preferable that T1 is 30 to 70% in atomic % and the remainder is Cr. 4 is a Co-Or perpendicularly magnetized film which can be used not only by sputtering, but also by 1-electron vino and evaporation methods according to the structure of the present invention, so that mass production is sometimes improved. It can be said.
垂直磁化膜としては他にＣｏ−Ｃｒに第３元素を添加し
たもの、Ｃｏ−Ｔｉ 、 Ｃｏ −Ｗ 、 Ｃｏ−Ｍｏ
等であってもよいが、それらは製造条件に制約があり、
性能面でもＣｏ−Ｃｒに比へ、少し劣るので、Ｃｏ−Ｃ
ｒ膜で構成するのが好ましい。Other perpendicular magnetization films include Co-Cr with a third element added, Co-Ti, Co-W, Co-Mo.
etc., but there are restrictions on manufacturing conditions,
In terms of performance, it is slightly inferior to Co-Cr, so Co-C
It is preferable to use an R film.
５は潤滑剤層で、脂肪酸、脂肪酸エステル、弗素化合物
等の溶液塗布法で形成した層−や、真空蒸着法で形成し
た層等が適し７ている。Reference numeral 5 denotes a lubricant layer, which is suitably a layer formed by solution coating of fatty acids, fatty acid esters, fluorine compounds, etc., or a layer formed by vacuum deposition.
勿論、保護膜として、カーボン膜、５１０２膜。Of course, carbon film and 5102 film are used as protective films.
プラズマ重合膜等を配して、その上に潤滑膜を配しても
よい。A plasma polymerized film or the like may be provided, and a lubricating film may be provided thereon.
以下更に具体的にポリエチレンテレフタレートフィルム
（厚み１１０７ｚ、中心線平均表面粗さ０．００３μｍ
）上に微粒子塗布層を配した上にスパッタリング法で
Ｔｉ−Ｃｒ合金膜を配し、その上に電子ビーム蒸着法で
Ｃｏ−０ｒ （Ｏｒ ２０．６ ｗｔ６ ・、−
％）膜を０．１５７１ｍ形成し、更に潤滑剤としてパー
フロロステアリン酸を５０人真空蒸着したものを８朋幅
の磁気テープとして、相対比較した結果を示す。More specifically, polyethylene terephthalate film (thickness 1107z, center line average surface roughness 0.003 μm
), a fine particle coating layer was placed on top of the Ti-Cr alloy film by sputtering, and a 0.1571 m thick Co-0r (Or 20.6 wt6 ., -%) film was deposited on top of it by electron beam evaporation. The results of a relative comparison are shown below, using a magnetic tape of 8 mm width prepared by vacuum-depositing perfluorostearic acid as a lubricant by 50 people.
使用したデツキは８ミリビデオを音声ディジタル録再用
に改造したもので、磁気ヘッドはギャップ長０．１７μ
ｍのフェライトヘッドで、ビット長は０．３μｍで、メ
チル特性は、同一トランクの再生出力が３（ｄＢ）低下
するまでの時間で、測定環境は５°Ｃ５％ＲＨである。The deck used was an 8mm video deck modified for audio digital recording and playback, and the magnetic head had a gap length of 0.17μ.
m ferrite head, the bit length is 0.3 μm, the methyl characteristic is the time it takes for the reproduction output of the same trunk to decrease by 3 (dB), and the measurement environment is 5° C. and 5% RH.
（以下 余 白）
７ ｌニー：
発明の効果
以上のように本発明によれば、耐久性とＣ／Ｎをバラン
スよく改良した短波長記録用の磁気記録媒体が得られる
といったすぐれた効果がある。(Hereinafter, blank) 7 L knee: Effects of the Invention As described above, the present invention has the excellent effect of providing a magnetic recording medium for short wavelength recording with improved durability and C/N in a well-balanced manner. .
図は本発明の磁気記録媒体の一実施例を示す要部拡大断
面図である。
１・・・・・・基板、２・・・・・・微粒子塗布層、３
・・・・Ｔｉ−０ｒ合金下地層、４・・・・・・Ｑｏ−
Ｏｒ垂直磁化膜。The figure is an enlarged sectional view of a main part of an embodiment of the magnetic recording medium of the present invention. 1... Substrate, 2... Fine particle coating layer, 3
...Ti-0r alloy base layer, 4...Qo-
Or perpendicular magnetization film.
Claims (1)
Ｃｏ−Ｃｒ垂直磁化膜を積層して成ることを特徴とする
磁気記録媒体。A Ti-Cr alloy base layer on a substrate having a fine particle coating layer,
A magnetic recording medium comprising a stack of Co--Cr perpendicular magnetization films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24779886A JPS63102024A (en) | 1986-10-17 | 1986-10-17 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24779886A JPS63102024A (en) | 1986-10-17 | 1986-10-17 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63102024A true JPS63102024A (en) | 1988-05-06 |
Family
ID=17168811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24779886A Pending JPS63102024A (en) | 1986-10-17 | 1986-10-17 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63102024A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6723415B2 (en) | 1999-12-28 | 2004-04-20 | Hitachi Maxell, Ltd, | Magnetic recording medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58133624A (en) * | 1982-02-01 | 1983-08-09 | Seiko Epson Corp | Magnetic recording medium |
| JPS6050718A (en) * | 1983-08-31 | 1985-03-20 | Ricoh Co Ltd | Magnetic recording medium |
-
1986
- 1986-10-17 JP JP24779886A patent/JPS63102024A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58133624A (en) * | 1982-02-01 | 1983-08-09 | Seiko Epson Corp | Magnetic recording medium |
| JPS6050718A (en) * | 1983-08-31 | 1985-03-20 | Ricoh Co Ltd | Magnetic recording medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6723415B2 (en) | 1999-12-28 | 2004-04-20 | Hitachi Maxell, Ltd, | Magnetic recording medium |
| US7060340B2 (en) | 1999-12-28 | 2006-06-13 | Hitachi Maxell, Ltd. | Magnetic recording medium |
| US7157136B2 (en) | 1999-12-28 | 2007-01-02 | Hitachi Maxell, Ltd. | Magnetic recording medium |
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