JPS6048045B2 - magnetic recording medium - Google Patents
magnetic recording mediumInfo
- Publication number
- JPS6048045B2 JPS6048045B2 JP9850576A JP9850576A JPS6048045B2 JP S6048045 B2 JPS6048045 B2 JP S6048045B2 JP 9850576 A JP9850576 A JP 9850576A JP 9850576 A JP9850576 A JP 9850576A JP S6048045 B2 JPS6048045 B2 JP S6048045B2
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- magnetic
- recording medium
- magnetic recording
- base material
- 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.)
- Expired
Links
- 230000005291 magnetic effect Effects 0.000 title claims description 40
- 239000010409 thin film Substances 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 description 14
- 239000002131 composite material Substances 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- -1 Polyethylene terephthalate Polymers 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
Description
【発明の詳細な説明】
本発明は、磁気記録媒体の改良に関するものて、特に高
保磁力の磁気記録媒体の提供を目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in magnetic recording media, and particularly aims at providing a magnetic recording medium with high coercive force.
従来、メッキ、蒸着等により、得られる磁性金属または
その合金を薄膜化したタイプの検討がなされているが、
実用的にみるといまだに不満足である。しかし、高密度
記録の要請にこたえうる方向として有望視され、重要な
要素である高い保磁力を持つた磁気記録媒体の開発が待
たれている。本発明は、このような現状に鑑み、金属ま
たは合金またはそれらに目的に応じて添加元素を配合し
た強磁性金属薄膜を磁気記録層とする磁気記録媒体にあ
つて、高い保磁力を有する磁気記録媒体の提供を目的と
する。第１図にその基本構成の一例を示し、第４図に本
発明の磁気記録媒体の製造に有用な装置の一例を示す。Conventionally, studies have been conducted on thin films of magnetic metals or their alloys obtained by plating, vapor deposition, etc.
From a practical point of view, it is still unsatisfactory. However, it is seen as a promising direction to meet the demands of high-density recording, and the development of magnetic recording media with high coercive force, which is an important element, is awaited. In view of the current situation, the present invention provides a magnetic recording medium having a magnetic recording layer made of a metal, an alloy, or a ferromagnetic metal thin film containing additive elements depending on the purpose, and a magnetic recording medium having a high coercive force. The purpose is to provide media. FIG. 1 shows an example of its basic configuration, and FIG. 4 shows an example of an apparatus useful for manufacturing the magnetic recording medium of the present invention.
本発明は、第１図に示すように、高分子成形物を基材１
とし磁性金属薄膜２とその基材１の間に非磁性体層を設
ける場合、この非磁性薄膜を２種類の相異なる物質３、
４からなる複合層で形成するもので、また磁性金属薄膜
２を多層構造体とする場合は、各磁性金属薄膜間に設け
た非磁性薄膜を前記複合層で形成するものである。In the present invention, as shown in FIG.
When a non-magnetic layer is provided between the magnetic metal thin film 2 and its base material 1, this non-magnetic thin film is coated with two different materials 3,
If the magnetic metal thin film 2 is a multilayer structure, the nonmagnetic thin film provided between each magnetic metal thin film is formed of the composite layer.
この場合、第２図に示すように基材１と磁性金属薄膜２
の間にさらに非磁性薄膜としての複合層３、４を形成し
てもよく、第３図に示すように磁性金属薄膜２と磁性金
属薄膜２の間にのみ非磁性薄膜としての複合層３、４を
形成してもよい。In this case, as shown in FIG. 2, the base material 1 and the magnetic metal thin film 2 are
Composite layers 3 and 4 as non-magnetic thin films may be further formed between the two magnetic metal thin films 2, as shown in FIG. 4 may be formed.
しかも、この複合層３、４は上層４が下層３より結晶化
の進んだ層である方が望ましい。この条件を満たす構成
は、第１非磁性薄膜３をＡｌ、Ａｕ、Ａｇ、Ｓｂ、Ｉｎ
より選ばれた材料で形成し、第２非磁性薄膜４をＳｉに
より形成した場合、または第１非磁性薄膜３をＡｇて形
成し、第２非磁性薄膜４をＺｎで形成した場合に得られ
る。これらは共晶点が下がることにより、結晶化が低い
基板温度でも進むために起るもので、この結晶化の進ん
だ基Ｊ板を用いることで、高い保磁力が得られるもので
、その効果は下記の実施例にみられるように顕著である
。次に第４図に本発明の構成の磁気記録媒体の製造装置
の一例を示す。Moreover, it is preferable that the upper layer 4 of the composite layers 3 and 4 is more highly crystallized than the lower layer 3. In a configuration that satisfies this condition, the first nonmagnetic thin film 3 is made of Al, Au, Ag, Sb, or In.
The second non-magnetic thin film 4 is made of Si, or the first non-magnetic thin film 3 is made of Ag and the second non-magnetic thin film 4 is made of Zn. . These occur because crystallization progresses even at low substrate temperatures due to the lowering of the eutectic point, and by using a substrate J board with advanced crystallization, a high coercive force can be obtained, and the effect is remarkable as seen in the examples below. Next, FIG. 4 shows an example of a magnetic recording medium manufacturing apparatus constructed according to the present invention.
真空槽５を例えば３室６、、７、８に分離し必要に応じ
てそれぞれ真空排気装置（図示せず）で各室６、７、８
を真空状態に保持する。原反９より巻き取りローラ１０
へローラ１１を用いて基材１搬送することで、基材１上
へ蒸発源１２により非磁性薄膜となる複合層の第１非磁
性薄膜３を形成し、次に蒸発源１３にて複合層の第２非
磁性薄膜４を形成し、最後に蒸発源１４により磁性金属
薄膜２を形成する。必要に応じて保護層、または磁性金
属薄膜の多層化は類似の構成にて製造される。１５は防
着板であり、１６，１７，１８は蒸発源１２，１３，１
４に用いられる加熱電源であり、１９は絶縁導入端子で
ある。For example, the vacuum chamber 5 is divided into three chambers 6, 7, and 8, and each chamber 6, 7, and 8 is separated by a vacuum evacuation device (not shown) as necessary.
is maintained in a vacuum state. Take-up roller 10 from the original fabric 9
By conveying the base material 1 using rollers 11, a first non-magnetic thin film 3 of a composite layer is formed on the base material 1 by an evaporation source 12, and then a composite layer is formed by an evaporation source 13. A second non-magnetic thin film 4 is formed, and finally a magnetic metal thin film 2 is formed using an evaporation source 14. If necessary, a protective layer or a multilayered magnetic metal thin film is manufactured using a similar structure. 15 is an anti-adhesion plate, 16, 17, 18 are evaporation sources 12, 13, 1
4 is a heating power source used, and 19 is an insulation introduction terminal.
蒸発源の種類、真空状態等については最適系を選択する
ことて本発明の効果を更に拡大し得るものであるが、特
に限定されるものではない。次に本発明の具体的実施例
について説明する。本発明Ａ基材：ポリエチレンテレフ
タレート１０ｐ非磁性薄膜：第１層Ａｕ２ＯＯＡ
第２層ＳＩ３ＯＯＡ
磁性金属薄膜：ＣＯ３ＯＯＯＡ
本発明Ｂ
基材：ポリエチレンテレフタレート１０μ非磁性薄膜：
第１層Ａｅ２ＯＯ入
第２層Ｓｌ３ＯＯＡ
磁性金属薄膜：Ｆｅ３ＯＯＯＡ
従来例Ｃ
基材：ポリエチレンテレフタレート１０μ非磁性薄膜：
第１層Ｓｉ３ＯＯＡ
磁性金属薄膜：ＣＯ３ＯＯＯＡ
従来例Ｄ
基材：ポリエチレンテレフタレート１０μ非磁性薄膜：
Ｓｌ５ＯＯＡ
磁性金属薄膜：Ｆｅ３ＯＯＯＡ
上記各例の保磁力（エルステッド）を測定したところ、
次表のようであつた。The effects of the present invention can be further expanded by selecting an optimal system for the type of evaporation source, vacuum state, etc., but these are not particularly limited. Next, specific examples of the present invention will be described. Invention A Base material: Polyethylene terephthalate 10p nonmagnetic thin film: First layer Au2OOA Second layer SI3OOA Magnetic metal thin film: CO3OOOA Invention B Base material: Polyethylene terephthalate 10p nonmagnetic thin film:
1st layer containing Ae2OO 2nd layer Sl3OOA Magnetic metal thin film: Fe3OOOA Conventional example C Base material: Polyethylene terephthalate 10μ non-magnetic thin film:
First layer Si3OOA Magnetic metal thin film: CO3OOOA Conventional example D Base material: Polyethylene terephthalate 10μ non-magnetic thin film:
Sl5OOA Magnetic metal thin film: Fe3OOOA When the coercive force (Oersted) of each of the above examples was measured,
It was as shown in the table below.
上表からも明らかなように、本発明により、高密度記録
に必要な高保磁力の磁気記録媒体が得られることになり
、情報産業はじめ電子工業界における有価値性は極めて
大なるものがある。As is clear from the above table, the present invention makes it possible to obtain a magnetic recording medium with a high coercive force necessary for high-density recording, and has great value in the electronic industry including the information industry.
第１図は本発明による磁気記録媒体の一実施例の断面図
、第２図、第３図はそれぞれ同他の実施例の断面図、第
４図は同磁気記録媒体の製造装置の一例を示す断面正面
図である。
１・・・・・・基材、２・・・・・・磁性金属薄膜、３
，４・・・・非磁性薄膜。FIG. 1 is a sectional view of one embodiment of a magnetic recording medium according to the present invention, FIGS. 2 and 3 are sectional views of other embodiments, and FIG. 4 is an example of an apparatus for manufacturing the magnetic recording medium. FIG. 1...Base material, 2...Magnetic metal thin film, 3
, 4...Nonmagnetic thin film.
Claims (1)
れＡｌ、Ａｕ、Ａｇ、Ｓｂ、Ｉｎの群より選ばれた材料
より第１非磁性薄膜と、この第１非磁性薄膜上に形成さ
れたＳｉよりなる第２非磁性薄膜と、この第２非磁性薄
膜上に磁性金属薄膜を形成してなる磁気記録媒体。1 A base material made of a polymer molded product, a first non-magnetic thin film formed on the base material and made of a material selected from the group of Al, Au, Ag, Sb, and In, and a first non-magnetic thin film formed on the first non-magnetic thin film. A magnetic recording medium comprising a second nonmagnetic thin film made of Si and a magnetic metal thin film formed on the second nonmagnetic thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9850576A JPS6048045B2 (en) | 1976-08-17 | 1976-08-17 | magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9850576A JPS6048045B2 (en) | 1976-08-17 | 1976-08-17 | magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5323608A JPS5323608A (en) | 1978-03-04 |
| JPS6048045B2 true JPS6048045B2 (en) | 1985-10-25 |
Family
ID=14221492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9850576A Expired JPS6048045B2 (en) | 1976-08-17 | 1976-08-17 | magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048045B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54145505A (en) * | 1978-05-04 | 1979-11-13 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
| JPS56124118A (en) * | 1980-03-06 | 1981-09-29 | Nec Corp | Magnetic recording material |
| JPS58176224U (en) * | 1982-05-18 | 1983-11-25 | 大日本印刷株式会社 | magnetic recording medium |
| JPS59142744A (en) * | 1983-02-02 | 1984-08-16 | Nec Corp | Magnetic recording medium |
| JPS59173130U (en) * | 1983-04-30 | 1984-11-19 | 大日本印刷株式会社 | magnetic recording medium |
-
1976
- 1976-08-17 JP JP9850576A patent/JPS6048045B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5323608A (en) | 1978-03-04 |
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