JPS6028212A - Magnetic optical recording material - Google Patents

Magnetic optical recording material

Info

Publication number
JPS6028212A
JPS6028212A JP13732183A JP13732183A JPS6028212A JP S6028212 A JPS6028212 A JP S6028212A JP 13732183 A JP13732183 A JP 13732183A JP 13732183 A JP13732183 A JP 13732183A JP S6028212 A JPS6028212 A JP S6028212A
Authority
JP
Japan
Prior art keywords
alloy
recording
optical recording
recording material
magneto
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
Application number
JP13732183A
Other languages
Japanese (ja)
Inventor
Masanobu Kobayashi
小林 政信
Mutsumi Asano
睦己 浅野
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP13732183A priority Critical patent/JPS6028212A/en
Publication of JPS6028212A publication Critical patent/JPS6028212A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00Thin magnetic films, e.g. of one-domain structure
    • H01F10/08Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H01F10/13Amorphous metallic alloys, e.g. glassy metals
    • H01F10/133Amorphous metallic alloys, e.g. glassy metals containing rare earth metals
    • H01F10/135Amorphous metallic alloys, e.g. glassy metals containing rare earth metals containing transition metals
    • H01F10/136Amorphous metallic alloys, e.g. glassy metals containing rare earth metals containing transition metals containing iron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Thin Magnetic Films (AREA)

Abstract

PURPOSE:To improve corrosion resistance and facilitate high density recording by a method wherein a Tb-Fe-Ni system amorphous alloy is used as a magnetic optical recording material while the alloy contains specific atom.% of Tb and the remainder of Fe and Ni with specific atom% of Ni to the total quantity of Fe+Ni. CONSTITUTION:An alloy layer 2 is formed on the surface of a transparent type substrate 1 and the alloy layer 2 is composed of Tb-Fe-Ni system amorphous alloy with terbium Tb, pure iron Fe and nickel Ni. Content of Tb in the alloy is 20-35atom%. Content of Ni in a total quantity of the remainder Fe+Ni is 5- 40atom%. With this constitution, corrosion resistance of the recording material is improved and repeatability of writing and erasing is increased and a high density recording is facilitated.

Description

【発明の詳細な説明】 (発明の技術分野) 本発明は磁気光学記録用材料、特にアモルファス合金か
らなる磁気光学記録用材料に関する。
DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a magneto-optical recording material, particularly to a magneto-optic recording material made of an amorphous alloy.

(従来技術の説明) 情報処理技術の分野においては、情報の多様化及び多様
性の急速な進展に伴ない、磁気メモリの記録8址、書込
み回数等の一層の増大化等の要求が近年益々高まってき
ている。そこで従来の記録方式に代わるものとして、光
記録媒体を用いた光記録方式が提案されており、その−
例として金属薄膜或いは金属含有ポリマー材料を用いた
ものがある。この方式では、記録媒体の記録部分をレー
ザ光によって溶融蒸発させて穴を開けて書込む方式であ
り書換えが不可能である。
(Description of Prior Art) In the field of information processing technology, with the rapid development of diversification and diversity of information, there have been increasing demands in recent years for further increases in magnetic memory recording capacity, number of writes, etc. It's increasing. Therefore, as an alternative to the conventional recording method, an optical recording method using an optical recording medium has been proposed.
Examples include thin metal films or metal-containing polymeric materials. In this method, the recorded portion of the recording medium is melted and evaporated using a laser beam, and a hole is punched for writing, making it impossible to rewrite.

一方、書換え可能な光記録媒体の例としては非晶質カル
コゲナイドのホトダークニング現象を利用したものがあ
るが、斯様な非晶質力ルゲナイド材料は一般に記録感度
が小さく、光吸収端が短波長側にあり、さらにその吸収
端付近の波長では吸収が小さいため長波長の光での記録
感度が非常に小さいという欠点がある。
On the other hand, an example of a rewritable optical recording medium is one that utilizes the photodarkening phenomenon of amorphous chalcogenide, but such amorphous chalcogenide materials generally have low recording sensitivity and a short optical absorption edge. On the wavelength side, absorption is small at wavelengths near the absorption edge, so there is a drawback that recording sensitivity for long wavelength light is extremely low.

一般にレーザ光は指向性が良く極めて小さいスポットに
絞れることから、この種の非晶質カルコゲナイドを用い
た光記録媒体用の光源として用いて好適である。また半
導体レーザは非常に小型化出来るので、光源用として特
に注目されている。
Generally, laser light has good directivity and can be focused to an extremely small spot, so it is suitable for use as a light source for optical recording media using this type of amorphous chalcogenide. Furthermore, since semiconductor lasers can be made extremely compact, they are attracting particular attention as light sources.

しかしながら、現在のところ半導体レーザの発振波長領
域が750〜800 nm以上であり、恐らく将来的に
も700 nm程度と比較的長波長であるため、記QJ
度が小さいという欠点がある。またおおむね小型でかつ
安定性のよいHe−Neレーザでも、その波長域は83
2.8 nrnテあるし、またAr、 Kr等のレーザ
は短波長のレーザであるが、若干不安定さが増しかつ装
置自体が大型であるという欠点がある。
However, at present, the oscillation wavelength range of semiconductor lasers is 750 to 800 nm or more, and in the future it will probably be a relatively long wavelength of around 700 nm, so the QJ
It has the disadvantage of being small. Furthermore, even with He-Ne lasers, which are generally small and have good stability, their wavelength range is 83
Although Ar and Kr lasers are short-wavelength lasers, they have the drawbacks that they are slightly more unstable and the equipment itself is large.

また別の光記録媒体として、サーモプラスチックと光導
電体とを組合せた媒体があり、この記録媒体は光導電体
を自由に選択することにより使用波長域を変えることが
出来るメリットはあるが、書換え可能な回数が最大でも
100回程度でありこの程度の回数では最近の情報の多
量化及び多様性に応じた処理が充分に出来ない。
Another type of optical recording medium is a medium that combines thermoplastic and photoconductor.This recording medium has the advantage of being able to change the operating wavelength range by freely selecting the photoconductor, but it is rewritable. The maximum number of times that can be used is about 100, and this number of times is insufficient to handle the recent increase in the amount and diversity of information.

また別の記録媒体として磁気光学記録用材料を使用した
ものがある。この種の記録媒体は使用する光源に関して
何等制限を有しないし、書換え可能回数も多く有望視さ
れている。その中でも特にcd、Tb、Dy等の希土類
元素とFe、Goの鉄属元素とのアモルファス合金がこ
の磁気光学記録用材料としての期待が大きく、これらは
Go系とFe系とに分けられる。しかしながらCO系は
合金組成の違いによる磁気特性の変化が大きすぎ、また
大型化等の面でFe系よいも不利であり、一方Fe系は
非常に酸化し易いという実用上の重大な欠点がある。
Another recording medium uses a magneto-optical recording material. This type of recording medium has no restrictions on the light source used, and is viewed as promising because it can be rewritten many times. Among these, amorphous alloys of rare earth elements such as CD, Tb, and Dy and iron elements such as Fe and Go are particularly promising as materials for magneto-optical recording, and these are divided into Go-based and Fe-based materials. However, the magnetic properties of CO-based systems vary greatly due to differences in alloy composition, and they are disadvantageous compared to Fe-based systems in terms of larger size, etc., and on the other hand, Fe-based systems have a serious practical drawback of being extremely easy to oxidize. .

この様に、従来の光記録媒体の多くは前述したような書
換え性及びその書換え詩にける諸特性等において必ずし
も満足出来るものが得られていないのが実情である。
As described above, the reality is that many of the conventional optical recording media do not necessarily have satisfactory rewritability and various characteristics of rewritten poems as described above.

(発明の目的) そこで、発明者等はこのような従来の欠点を除去すべく
試験研究を重ねた結果、Tb−Fe−Ni系アモルファ
ス合金で、Tbを20〜35原子%ととし、残部Fe+
Niの全体のうちNiを5〜40原子%とすることによ
り、Tb−Fe系に比べ著しく耐食性を向上させ、書込
み・消去の反復性か優れ、高密度記録が出来ることを見
出したのである。
(Purpose of the Invention) Therefore, as a result of repeated testing and research in order to eliminate such conventional drawbacks, the inventors created a Tb-Fe-Ni amorphous alloy with Tb in the range of 20 to 35 at%, and the balance being Fe+
They found that by setting Ni to 5 to 40 atomic percent of the total Ni content, corrosion resistance is significantly improved compared to the Tb-Fe system, the repeatability of writing and erasing is excellent, and high-density recording is possible.

また、N1の添加番らともないTb−Fe系に比べ記録
感度が向上し、記録の安定性も遜色していないことを見
出した。
It has also been found that the recording sensitivity is improved and the recording stability is comparable to that of the Tb-Fe system without the addition of N1.

従って、本発明の目的は耐食性の優れた磁気光学記録用
材料を提供するにある。
Therefore, an object of the present invention is to provide a magneto-optical recording material with excellent corrosion resistance.

本発明の他の目的は書込み、消去の反復性を著しく増大
し、高雀度記録用として使用可能で、記録感度が良く、
しかも、記録の安定性の良い磁気光学記録用材料を提供
するにある。
Another object of the present invention is to significantly increase the repeatability of writing and erasing, to be usable for high-speed recording, to have good recording sensitivity;
Moreover, it is an object of the present invention to provide a magneto-optical recording material with good recording stability.

(発明の構成) このl」的の達成を図るため、本発明による磁気光学記
録用材料によれば、Tb−Fe−Ni系アモルファス合
金からなり、このアモルファス合金の合金成分子すの量
を20〜35原子%とし、残部のFB+ Niの全体量
のうち合金成分Niの量を5〜40原子%としたことを
特徴とする。
(Structure of the Invention) In order to achieve this objective, the magneto-optical recording material according to the present invention is made of a Tb-Fe-Ni amorphous alloy, and the amount of alloying element molecules of this amorphous alloy is reduced to 20. ~35 at%, and the amount of the alloy component Ni is set at 5 to 40 at% in the total amount of the remaining FB+ Ni.

(実施例の説明) 以下、図面を参照して本発明の実施例につき説明する。(Explanation of Examples) Embodiments of the present invention will be described below with reference to the drawings.

第1図は本発明の磁気光学記録用材料を使用した磁気光
学記録媒体の一実施例をその構造が理解出来る程度に示
す略図的断面図である。同図において、1は基板で、図
示例では透過型の記録媒体を示しており、従って、基板
1を透明基板とし、この基板1として充分に平滑でかつ
透明なガラス基板を用いる。この基板1の上側に記録層
2を設る。この記録層2を上述した本発明の磁気光学記
録用材料で形成し、この場合、例えばこの層2を純鉄(
Fe)ターゲット、テルビウムTb、ニンヶルNiのチ
ップを合金組成に適した面積の割合で一定の規則的なパ
ンタージに従って配列してRFスパッタ法によって形成
する。
FIG. 1 is a schematic cross-sectional view showing an embodiment of a magneto-optic recording medium using the magneto-optic recording material of the present invention to the extent that its structure can be understood. In the figure, reference numeral 1 denotes a substrate, and the illustrated example shows a transmissive recording medium. Therefore, the substrate 1 is a transparent substrate, and a sufficiently smooth and transparent glass substrate is used as the substrate 1. A recording layer 2 is provided on the upper side of this substrate 1. This recording layer 2 is formed of the above-mentioned magneto-optical recording material of the present invention, and in this case, for example, this layer 2 is made of pure iron (
Chips of a Fe) target, terbium Tb, and nickel Ni are arranged according to a regular pantage at an area ratio suitable for the alloy composition, and formed by RF sputtering.

このようにして形成された磁気光学記録媒体に対し、1
0mw以下のアルゴンレーザ光を用いて、約lpsの書
込み時間で記録書込みを行って、約1ルm径以下の微小
記録を得、また、1000回以上の消去及び再書込みに
の反復に耐えることを確認した。また、第1図に示す構
成と同一構成のTb−Fe系材料からなる記録媒体は、
空気の雰囲気中で、室温25°C〜30°Cとしたとこ
ろ、数日で酸化してしまったのに対し、本発明の磁気光
学記録用材料を以って形成した記録媒体は同一条件で1
ケ月後でもほとんど醇化されないことが確認された。一
方書込み、消去、読出し時の諸特性はTb−Fe系材料
からなる記録媒体と大差はなく、記録特性はむしろ向上
した。
For the magneto-optical recording medium thus formed, 1
Record writing is performed using an argon laser beam of 0 mw or less in a writing time of about lps to obtain minute records with a diameter of about 1 lm or less, and it can withstand repeated erasing and rewriting more than 1000 times. It was confirmed. Furthermore, a recording medium made of a Tb-Fe-based material having the same configuration as that shown in FIG.
When heated to a room temperature of 25°C to 30°C in an air atmosphere, it oxidized within a few days, whereas a recording medium formed using the magneto-optical recording material of the present invention did not oxidize under the same conditions. 1
It was confirmed that there was almost no meltening even after several months. On the other hand, various characteristics during writing, erasing, and reading were not significantly different from those of recording media made of Tb-Fe-based materials, and the recording characteristics were rather improved.

上述したところから明らかのように、本発明のTb−F
e−Ni系の磁気光学記録用材料はTb−Fe系の記録
材料と比べ記録材料としての特性はほとんど変わらない
かむしろ向」二し、かつ、著しく耐食性が増しているわ
けである。
As is clear from the above, the Tb-F of the present invention
Compared to Tb-Fe based recording materials, e-Ni based magneto-optical recording materials have almost no difference in properties as a recording material, or even better, and their corrosion resistance has increased significantly.

次に、本発明の磁気光学記録材料の一例であるT ba
t(N i x F et。IT−X)η合金膜(組成
は全て原子%で表わしである)のキュリ一点、抗磁力、
カー効果に関しての実験結果に基づいてこの合金の性質
につき説明する。この実験で用いた磁界は最大でもfi
KOeでありパラメータ温度はO′C〜200℃の範囲
であった。また、使用した合金層の厚さは約1200A
である。
Next, T ba which is an example of the magneto-optic recording material of the present invention
Curie point of t(NixFet.IT-X)η alloy film (all compositions are expressed in atomic %), coercive force,
The properties of this alloy will be explained based on experimental results regarding the Kerr effect. The magnetic field used in this experiment was at most fi
KOe and the parameter temperature ranged from O'C to 200C. Also, the thickness of the alloy layer used was approximately 1200A.
It is.

第2図はTbxt(NjxFeyao−x)qiのキュ
リ一点の成分Ni量による変化を示す曲線図で、縦軸に
温度/°C及び横軸に成分Niの量Xを夫々プロントし
て示した図である。このキュリ一点の測定はホール電圧
■−磁界H曲線から測定したものである。この場合には
、各N1量毎に、温度をパラメータとし、各温度におい
て電流I (0,lA)と磁界Hとによるホール電圧を
測定し、ホール電圧がOとなる温度からキュリ一点(図
中黒丸印で示す)をめた。この実験結果から、Ni量の
増加に伴いキュリ一点がやや低下することが分かる。こ
れにより、Niの添加により本発明の記録用材料はTb
−Fe系の記録用材料に比べて記録感度がやや増加する
Figure 2 is a curve diagram showing changes in Tbxt(NjxFeyao-x)qi depending on the amount of Ni component at one point of Curie, with temperature/°C plotted on the vertical axis and amount X of Ni component plotted on the horizontal axis. It is. The measurement at this Curie point was made from the Hall voltage (2) - magnetic field (H) curve. In this case, for each amount of N1, the temperature is used as a parameter, and the Hall voltage due to the current I (0, lA) and the magnetic field H is measured at each temperature, and from the temperature where the Hall voltage becomes O, one point (in the figure) (indicated by a black circle) was completed. From the results of this experiment, it can be seen that as the amount of Ni increases, the Curie point slightly decreases. As a result, by adding Ni, the recording material of the present invention becomes Tb
- Recording sensitivity is slightly increased compared to Fe-based recording materials.

第3図は第2図と同じ< T bzr(N i X F
 ves−x )72合金膜の抗磁力のNi量依存性を
示す曲線図である。同図において、縦軸に抗磁力/KO
e及びNi量Xを夫々プロントして示す。この場合、こ
の抗磁力はキュリ一点をめる際に得られたV−H曲線か
らめた。
Figure 3 is the same as Figure 2 < T bzr(N i X F
ves-x) is a curve diagram showing the dependence of the coercive force of the 72 alloy film on the amount of Ni. In the same figure, the vertical axis is coercive force/KO
e and Ni amount X are shown in the front, respectively. In this case, this coercive force was calculated from the VH curve obtained when setting the Curie point.

同図において、曲線aは温度30°C(室温)での′値
であり曲線すは温度100°Cでの値である。第3図か
ら明らかなように、1量の増加に伴ない高温(100°
C)での抗磁力が多くの場合減少しており、従ってこの
場合にも記録感度が増大する。一方、一般には、記録の
安定性は室温での抗磁力に依存し、抗磁力が大きければ
記録が地球磁場その他の外部磁場で消えることかなく安
定している。第3閾に示す室温での抗磁力はTb−Fe
系の記録用材料よりほやや減少するが、IKOe以上あ
れば自分自信の磁場で記録が消えることがないので、第
3図に示す程度の大きさの抗磁力で充分に記録を安定し
て保持することができ、また、光で書込みを行うことを
考慮すると高密度記録が可能となる。
In the figure, curve a is the value at a temperature of 30°C (room temperature), and curve a is the value at a temperature of 100°C. As is clear from Figure 3, as the amount of 1 increases, the temperature increases (100°
The coercive force in C) is often reduced, so that the recording sensitivity increases in this case as well. On the other hand, in general, the stability of recording depends on the coercive force at room temperature, and the greater the coercive force, the more stable the record will be without being erased by the earth's magnetic field or other external magnetic fields. The coercive force at room temperature shown in the third threshold is Tb-Fe
Although it is slightly less than the recording material of the system, if it is above IKOe, the recording will not be erased by its own magnetic field, so the coercive force of the magnitude shown in Figure 3 is sufficient to stably hold the recording. Furthermore, considering that writing is performed with light, high-density recording becomes possible.

第4図は同様にTb2r(NIXFez/i+−x)7
2合金系のカー効果をTb2RFepz合金の値を基準
として表わしてあり、縦軸にカー回転角Ok及び横軸に
NiMXを夫々プロッl= l、て示す。この場合には
、各Nl量毎に、室温で磁界を変えてカー回転角を測定
した。第4図に示す実験結果からも明らかのように、N
1量の増大によって徐々にカー効果は小さくなる。この
点はN】を加えることの唯一の欠点であるが、Fe十N
i量の40原子%までのNl量においてはその減少は小
さ・く、また、カー効果の小さい分は保護膜等に被覆に
よっても増大させることができるので実用上問題はない
Similarly, Figure 4 shows Tb2r(NIXFez/i+-x)7
The Kerr effect of the two-alloy system is expressed using the value of the Tb2RFepz alloy as a reference, and the Kerr rotation angle Ok is plotted on the vertical axis and NiMX is plotted on the horizontal axis, respectively. In this case, the Kerr rotation angle was measured at room temperature while changing the magnetic field for each amount of Nl. As is clear from the experimental results shown in Figure 4, N
The Kerr effect gradually decreases as the amount increases. This point is the only drawback of adding N], but Fe0N
When the amount of Nl is up to 40 at % of the amount of i, the decrease is small, and since the small Kerr effect can be increased by coating with a protective film or the like, there is no problem in practice.

N1を加えることによる耐食性が向」ニする原因は現在
のところ次のように考えられる。N1はFeやTbより
も不活性である。この不活性元素が均一に分布するため
合金全体の化学的活性度が低下する。
The reason why the corrosion resistance is improved by adding N1 is currently considered to be as follows. N1 is more inactive than Fe and Tb. The uniform distribution of this inert element reduces the chemical activity of the entire alloy.

合金が腐食を受けてもこのような不活性金属元素はほと
んど酸化皮膜中には入らず、その真下の合金表面層に金
属状態のまま濃縮されると考えられる。このように、不
活性な金属が金属状態のまま合金表面に濃縮されると、
合金は益々不活性となり、耐食性が向上する。
Even when the alloy undergoes corrosion, it is thought that these inert metal elements hardly enter the oxide film, but are concentrated in the alloy surface layer directly beneath the oxide film in a metallic state. In this way, when an inert metal is concentrated on the alloy surface while remaining in a metallic state,
The alloy becomes increasingly inert and has improved corrosion resistance.

本発明による上述の組成範囲Tby(NixFel−x
)z−Y(ここで、x=5〜40、y−20〜35であ
って、原子%で表わす)のTb−Fe−Ni合金膜につ
いて、Tb−Fe合金膜と同様の特性を有しかつ著しく
耐食性を向上出来ることが確認された。尚、合金成分子
すの組成範囲を20〜30%としているか、これは垂直
磁化が得られ易いことを考慮したものである。
The above composition range Tby (NixFel-x
)z-Y (here, x = 5 to 40, y-20 to 35, expressed in atomic %) Tb-Fe-Ni alloy film has the same characteristics as the Tb-Fe alloy film. It was also confirmed that corrosion resistance could be significantly improved. The composition range of the alloying elements is set at 20 to 30%, considering that perpendicular magnetization is easily obtained.

(発明の効果) 上述したところから明らかなように、本発明による磁気
光学記録用材料は従来のこの種の記録様材料よりも耐食
性が優れており、また、書込み・消去の反復性を著しく
増大し得、高密度記録が可能となり、記録感度が良く、
しかも、記録の安定性が良いという利点を有する。
(Effects of the Invention) As is clear from the above, the magneto-optical recording material according to the present invention has better corrosion resistance than conventional recording materials of this type, and also significantly increases the repeatability of writing and erasing. It enables high-density recording, has good recording sensitivity,
Moreover, it has the advantage of good recording stability.

また、本発明の磁気光学記録様材料はレーザ光を用いて
書込み及び消去が可能であり、何等使用光源に関する従
来のごとき種々の制約が著しく軽減されるという利点が
ある。
Furthermore, the magneto-optical recording-like material of the present invention can be written and erased using laser light, and has the advantage that various conventional restrictions regarding the light source used are significantly alleviated.

本発明によるこのような磁気光学記録様材料は上述した
透明ガラスにのみ被着されるものではなく、透明、不透
明を問わず板状、シート状、テープ状その他の形状でし
かも任意所望の材料からなる基板上に合金層として被着
形成することが出来る。
Such a magneto-optical recording-like material according to the present invention is not only applied to the above-mentioned transparent glass, but also can be applied in the form of a plate, sheet, tape, or other shape, regardless of whether it is transparent or opaque, and can be made of any desired material. It can be deposited as an alloy layer on a substrate.

本発明の磁気光学記録用材料は特に記録媒体に使用して
好適である。
The magneto-optical recording material of the present invention is particularly suitable for use in recording media.

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

第1図は本発明の磁気光学記録用材料を適用して形成し
た磁気光学記録媒体を示す略図的断面図第2図、第3図
及び第4図は本発明による磁気光学記録用材料の特性の
説明に夫々供するキュリ一点、抗磁力及びカー効果の実
験結果を示す曲線図である。 1・・・基板、 2・・・記録層(合金R)。 特許出願人 沖電気工業株式会社 第1図 第4図 手続補正書 昭和58年2月1日 特許庁長官 若杉和夫 殿 1事件の表示 特願昭58−137321、発明の名称 磁気光学記録用材料 3補正をする者 事件との関係 特許出願人 住所(〒−105) 東京都港区虎ノ門1丁目7番12号 名称(028)沖電気工業株式会社 代表者 橋本 南海男 4代理人 〒170 ft (988)5583住所 
東京都豊島区東池袋1丁目20番地56補正の内容 別紙の通り (1)、明細書、第2頁第6行の「カルゲナイド」を「
カルコゲナイドjと訂正し、 同頁第12〜13行の「ポットにφ・・φ光源として用
い」を「ポットに絞れることから、光記録奴体用の光源
として用いjと訂正し、 同頁第18〜19行の「比較的長波長であるため・・・
またおおむね」を「比較的長波長である。またおおむね
」と訂正する。 (2)、同、第3頁第3行の「欠点がある。」を「欠点
がある。即ち上述の非晶質カルコゲナイドは使用光源に
著しい制限があり、しかも、メモリー装置か著しく大き
なものになってしまう。」と訂正し、 同第20行のrFe系よいも」をfFe系よりも」と訂
正する。 (3)、同、第4頁第3行の「書換え時にける」をII
’書換え時における」と訂正する。 (4)、同、第5頁第19行の「設」を「設け」と訂正
する。 (5)、同、第6頁第4行の「バラターン」を「パター
ンJ と訂正し、 同第10行の「再書込みにの」を「再書込みのjと訂正
する。 (6)、同、第7頁第5行の「磁気光学記録材料」を「
磁気光学記録用材料jと訂正する。 (7)、同、第8頁第8行の「及びNi量X」を「及び
横軸にNi量xjと訂正する。 (8)、同、第9頁第8行の[カー回転角Ok Jを「
カー回転角外 」と訂正し、 同、第15行の「保護膜等に」を「保護膜等のJと訂正
する。 (9)、同、第1O頁第8行のrTby(NixFeI
−+r) /−YJをIf Tby(N!xFezII
4)zpa−yj と訂正し、同、第13行の「30」
を「35jと訂正する。 (10)、同、第10頁第17行、第11頁第2行及び
第11頁第6行の「記録様」を「記録用Aと訂正する。
FIG. 1 is a schematic cross-sectional view showing a magneto-optic recording medium formed by applying the magneto-optic recording material of the present invention. FIGS. 2, 3 and 4 are characteristics of the magneto-optic recording material of the present invention. FIG. 3 is a curve diagram showing experimental results of a single Curie point, coercive force, and Kerr effect, which are used to explain the following. 1... Substrate, 2... Recording layer (alloy R). Patent Applicant Oki Electric Industry Co., Ltd. Figure 1 Figure 4 Procedural Amendment February 1, 1980 Director-General of the Patent Office Kazuo Wakasugi Case 1 Indication Patent Application 137321-1981, Name of Invention Magneto-Optical Recording Material 3 Relationship with the person making the amendment Patent applicant address (〒-105) 1-7-12 Toranomon, Minato-ku, Tokyo Name (028) Oki Electric Industry Co., Ltd. Representative Nankai Hashimoto 4 Agent Address 170 ft (988) )5583 address
56, 1-20 Higashiikebukuro, Toshima-ku, Tokyo Contents of the Amendment As per attached sheet (1), "Calgenide" in the specification, page 2, line 6, has been changed to "
chalcogenide j, and in lines 12 and 13 of the same page, ``Used as a φ...φ light source for the pot'' was corrected as ``Because it can be narrowed down to the pot, it is used as a light source for optical recording bodies.'' In lines 18-19, “Because it has a relatively long wavelength...
"Also, roughly" should be corrected to "It has a relatively long wavelength. Also, roughly." (2), same, page 3, line 3, ``There are disadvantages.'' was changed to ``There are disadvantages.'' Namely, the above-mentioned amorphous chalcogenide has significant limitations on the light source that can be used, and moreover, the memory device is extremely large. In the 20th line of the same line, ``rFe type is better than fFe type.'' is corrected to ``. (3), ``When rewriting'' on page 4, line 3, II.
Corrected to 'at the time of rewriting'. (4), same, page 5, line 19, "set" is corrected to "set". (5), ``Baratan'' in the 4th line of page 6 is corrected as ``pattern J'', and ``rewrite ni no'' in the 10th line of the same page is corrected to ``rewrite j.'' (6), ditto. , change “magneto-optical recording material” on page 7, line 5 to “
Corrected as magneto-optical recording material j. (7), same, page 8, line 8, "and Ni amount X" is corrected as "and the horizontal axis is Ni amount J as “
(9), same, page 10, line 8, rTby(NixFeI
-+r) /-YJ If Tby(N!xFezII
4) Corrected as zpa-yj and changed "30" in line 13.
is corrected to ``35j.'' (10) ``Recording type'' on page 10, line 17, page 11, line 2, and page 11, line 6 is corrected to ``A for recording.''

Claims (1)

【特許請求の範囲】[Claims] Tb−Fe−Ni系アモルファス合金からなり、該アモ
ルファス合金の該Tbの量を20〜35原子%とし、残
部のFe+Niの全体量のうち該Niの量を5〜40原
子%としたことを特徴とする磁気光学記録用材料。
It is characterized by being made of a Tb-Fe-Ni based amorphous alloy, in which the amount of Tb in the amorphous alloy is 20 to 35 atomic %, and the amount of Ni is 5 to 40 atomic % in the total amount of the remaining Fe + Ni. magneto-optical recording material.
JP13732183A 1983-07-27 1983-07-27 Magnetic optical recording material Pending JPS6028212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13732183A JPS6028212A (en) 1983-07-27 1983-07-27 Magnetic optical recording material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13732183A JPS6028212A (en) 1983-07-27 1983-07-27 Magnetic optical recording material

Publications (1)

Publication Number Publication Date
JPS6028212A true JPS6028212A (en) 1985-02-13

Family

ID=15195945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13732183A Pending JPS6028212A (en) 1983-07-27 1983-07-27 Magnetic optical recording material

Country Status (1)

Country Link
JP (1) JPS6028212A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6118107A (en) * 1984-07-04 1986-01-27 Ricoh Co Ltd Non-crystalline magneto-optical layer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6118107A (en) * 1984-07-04 1986-01-27 Ricoh Co Ltd Non-crystalline magneto-optical layer

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