JPH0581716A - Magneto-optical storage element - Google Patents
Magneto-optical storage elementInfo
- Publication number
- JPH0581716A JPH0581716A JP7450092A JP7450092A JPH0581716A JP H0581716 A JPH0581716 A JP H0581716A JP 7450092 A JP7450092 A JP 7450092A JP 7450092 A JP7450092 A JP 7450092A JP H0581716 A JPH0581716 A JP H0581716A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- magneto
- optical storage
- storage element
- disk
- 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
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は光を用いて情報の記録、
再生、消去の少なくとも１つの動作を行う磁気光学記録
装置に使用する磁気光学記憶素子に関する。BACKGROUND OF THE INVENTION The present invention relates to the recording of information using light,
The present invention relates to a magneto-optical storage element used in a magneto-optical recording device that performs at least one operation of reproduction and erasing.
【０００２】[0002]
【従来の技術】近年、Ｈｅ−Ｎｅレーザ、Ａｒレーザ、
半導体レーザ等を用いて磁性薄膜上に光学的に情報の記
録、再生、消去を行う方式、すなわち磁気光学記録方式
が高密度化、大容量化及びアクセスの高速化が可能な方
式として注目され、産業界等において重点的に研究開発
が推進されている。また、この方式に用いる記憶材料と
して種々の合金製磁性体が、情報の書き換えが可能なこ
とから注目されている。2. Description of the Related Art In recent years, He--Ne lasers, Ar lasers,
A method of optically recording, reproducing, and erasing information on a magnetic thin film using a semiconductor laser or the like, that is, a magneto-optical recording method has attracted attention as a method capable of high density, large capacity, and high speed access, R & D is being promoted in the industrial world. Further, magnetic materials made of various alloys have been attracting attention as a memory material used in this method because information can be rewritten.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の磁気光
学記憶素子は、一対の基板間に磁性体薄膜を挟持させる
ことにより形成されているので、特に長期間の保存を必
要とする磁気光学記憶素子においては、磁性材料として
Ｆｅ2Ｏ3、ＣｒＯ2等酸化物を用いたものを除いて大
気、水蒸気に触れると腐食されるものがほとんどである
ことから使用環境、保存環境等に制約があり、極めて使
い勝手が悪かったのである。However, since the conventional magneto-optical memory element is formed by sandwiching a magnetic thin film between a pair of substrates, the magneto-optical memory particularly requires long-term storage. Most of the elements are not corroded when exposed to the atmosphere or water vapor, except those using oxides such as Fe 2 O 3 and CrO 2 as magnetic materials, so there are restrictions on the use environment and storage environment. , It was extremely inconvenient.
【０００４】本発明は磁性体薄膜を確実に大気や水蒸気
から遮断し得るようにして酸化や腐食といった環境の影
響を受けることの少ない磁気光学記憶素子を提供するこ
とを目的とする。It is an object of the present invention to provide a magneto-optical storage element which is capable of reliably blocking a magnetic thin film from the atmosphere and water vapor and which is less affected by the environment such as oxidation and corrosion.
【０００５】[0005]
【課題を解決するための手段】上述の目的を達成するた
め、本発明はガラスあるいは合成樹脂材からなる透明な
第１の基板上に、該第１の基板の内外端縁部を除いて希
土類と遷移金属との合金からなる磁気光学記憶用のアモ
ルファス磁性体薄膜を成膜し、該薄膜の外面を覆って塗
布した紫外線硬化接着剤を介して透明な第２の基板を接
着することを特徴とする磁気光学記憶素子である。In order to achieve the above-mentioned object, the present invention provides a rare earth element on a transparent first substrate made of glass or a synthetic resin material except for the inner and outer edge portions of the first substrate. An amorphous magnetic thin film for magneto-optical storage made of an alloy of a transition metal and a transition metal is formed, and a transparent second substrate is bonded via an ultraviolet curing adhesive applied to cover the outer surface of the thin film. Is a magneto-optical storage element.
【０００６】[0006]
【作用】第１の基板の内外端縁部を除いて希土類と遷移
金属との合金からなる磁気光学記憶用のアモルファス磁
性体薄膜を成膜し、この薄膜の外面全体を覆って紫外線
硬化接着剤で第２の基板を接着することによってアモル
ファス磁性体薄膜を完全に大気から遮断することができ
る。An amorphous magnetic thin film for magneto-optical storage, which is made of an alloy of rare earth and a transition metal except the inner and outer edges of the first substrate, is formed, and the ultraviolet curing adhesive is coated on the entire outer surface of the thin film. By adhering the second substrate, the amorphous magnetic thin film can be completely shielded from the atmosphere.
【０００７】[0007]
【実施例】図１は円板状に形成した本願発明の一実施例
の磁気光学記憶素子の断面を示す図である。コーニング
マイクロシート等ガラス製の円板あるいはアクリル、ポ
リカーボネート等樹脂製の円板１の上面に外端縁部６及
び内端縁部７を除いてＳｍ、Ｅｕ、Ｇｄ、Ｔｂ、Ｄｙ、
Ｈｏ、Ｅｒ等の希土類とＦｅ、Ｃｏ、Ｎｉ等の遷移金属
とを種々の組成比で組み合わせて構成されるアモルファ
スフェリ磁性体薄膜２を形成する。次に、円板１の外端
縁部６及び内端縁部７並びにアモルファスフェリ磁性体
薄膜２の上面に紫外線硬化接着剤層３を形成し、円板１
と同様にガラス製あるいは樹脂製の円板４を接着してあ
る。なお、図中の符号５は中心孔である。FIG. 1 is a diagram showing a cross section of a magneto-optical storage element according to an embodiment of the present invention formed in a disk shape. On the upper surface of a disk made of glass such as Corning microsheet or a disk made of resin such as acrylic and polycarbonate, Sm, Eu, Gd, Tb, Dy, except for the outer edge portion 6 and the inner edge portion 7,
An amorphous ferrimagnetic thin film 2 formed by combining rare earths such as Ho and Er and transition metals such as Fe, Co, and Ni at various composition ratios is formed. Next, the ultraviolet curable adhesive layer 3 is formed on the outer edge portion 6 and the inner edge portion 7 of the disc 1 and on the upper surface of the amorphous ferrimagnetic thin film 2 to form the disc 1
Similarly to the above, a glass or resin disk 4 is bonded. Reference numeral 5 in the drawing is a central hole.
【０００８】また、円板１の内外端縁部を除いて磁性体
薄膜２を形成する方法としては種々の方法が考えられ
る。Various methods are conceivable for forming the magnetic thin film 2 excluding the inner and outer edge portions of the disc 1.
【０００９】例えば真空蒸着法による場合は外端縁部６
及び内端縁部７を隠すようなマスクを使用することによ
り簡単に磁性体薄膜を成膜できる。For example, in the case of the vacuum deposition method, the outer edge portion 6
Also, the magnetic thin film can be easily formed by using a mask that hides the inner edge portion 7.
【００１０】またスパッタリング法による場合は、真空
蒸着法のようにマスクを使用すると磁性体薄膜を均一に
形成するのが困難なので、この場合には、一旦円板１の
上面全面に磁性体薄膜を形成した後、エッチング法によ
り外端縁部６と内端縁部７との磁性体薄膜を除去すれば
よい。In the case of the sputtering method, it is difficult to uniformly form the magnetic thin film if a mask is used as in the vacuum deposition method. In this case, therefore, the magnetic thin film is once formed on the entire upper surface of the disk 1. After the formation, the magnetic thin films on the outer edge portion 6 and the inner edge portion 7 may be removed by an etching method.
【００１１】上述のように、接着剤層３はアモルファス
フェリ磁性体薄膜２の全面を覆うように形成されている
ので、この接着剤層３によってアモルファスフェリ磁性
体薄膜２は外部の大気から完全に遮断される。したがっ
て、アモルファスフェリ磁性体薄膜２が外部の酸素、水
蒸気等の環境に直接触れることはない。Since the adhesive layer 3 is formed so as to cover the entire surface of the amorphous ferrimagnetic thin film 2 as described above, the amorphous ferrimagnetic thin film 2 is completely covered by the adhesive layer 3 from the outside atmosphere. To be shut off. Therefore, the amorphous ferrimagnetic thin film 2 does not come into direct contact with the environment such as external oxygen and water vapor.
【００１２】磁性体薄膜２に用いる磁性材料には、アモ
ルファスフェリ磁性体以外にもＭｕＢｉ、ＭｕＢｉＣｕ
等の結晶性磁性体を用いることができる。In addition to the amorphous ferrimagnetic material, MuBi and MuBiCu are used as the magnetic material for the magnetic thin film 2.
It is possible to use a crystalline magnetic material such as.
【００１３】また、円板１、４の双方が透明である必要
は必ずしもないが、記録ヘッドと相対する側の円板は透
明でなければならない。したがって、他側の円板として
不透明なＡｌ等の金属板、セラミックス等を用いること
も可能であるが、この場合には紫外線硬化接着剤を用い
るよりも通常の接着剤を用いる方が好ましい。Both the disks 1 and 4 need not be transparent, but the disk on the side facing the recording head must be transparent. Therefore, it is possible to use an opaque metal plate of Al or the like, a ceramics, or the like as the disk on the other side, but in this case, it is preferable to use a normal adhesive rather than an ultraviolet curing adhesive.
【００１４】また、本発明の磁気光学記憶素子は上述の
実施例のような円板状のものに限られるものではなく、
テープ等にも実施可能である。Further, the magneto-optical storage element of the present invention is not limited to the disk-shaped one as in the above embodiment,
It can also be applied to a tape or the like.
【００１５】[0015]
【発明の効果】以上のように、本願発明は、磁性体薄膜
の全面を接着剤により覆うことにより大気と完全に遮断
して腐食、酸化等の磁化特性劣化を確実に防止し得ると
いう特有の効果を奏する。As described above, the present invention is unique in that the entire surface of the magnetic thin film is covered with the adhesive so that the magnetic thin film is completely shielded from the atmosphere and deterioration of the magnetic properties such as corrosion and oxidation can be reliably prevented. Produce an effect.
【図１】本願発明の一実施例の磁気光学記憶素子の中央
縦断面図である。FIG. 1 is a central vertical cross-sectional view of a magneto-optical storage element according to an embodiment of the present invention.
１ 円板 ２ アモルファスフェリ磁性体薄膜 ３ 紫外線硬化接着剤 ４ 円板 ５ 中心孔 ６ 外端縁部 ７ 内端縁部 1 Disc 2 Amorphous Ferrimagnetic Thin Film 3 UV Curing Adhesive 4 Disc 5 Center Hole 6 Outer Edge 7 Inner Edge
Claims (1)
な第１の基板上に、該第１の基板の内外端縁部を除いて
希土類と遷移金属との合金からなる磁気光学記憶用のア
モルファス磁性体薄膜を成膜し、該薄膜の外面を覆って
塗布した紫外線硬化接着剤を介して透明な第２の基板を
接着することを特徴とする磁気光学記憶素子。1. Amorphous magnet for magneto-optical storage, which is made of an alloy of a rare earth and a transition metal on a transparent first substrate made of glass or a synthetic resin material, excluding inner and outer edge portions of the first substrate. A magneto-optical storage element, characterized in that a body thin film is formed, and a transparent second substrate is adhered via an ultraviolet curing adhesive applied so as to cover the outer surface of the thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7450092A JP2665295B2 (en) | 1992-03-30 | 1992-03-30 | Magneto-optical storage element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7450092A JP2665295B2 (en) | 1992-03-30 | 1992-03-30 | Magneto-optical storage element |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10160480A Division JPS5727494A (en) | 1980-06-23 | 1980-07-23 | Magneto-optical storage element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0581716A true JPH0581716A (en) | 1993-04-02 |
| JP2665295B2 JP2665295B2 (en) | 1997-10-22 |
Family
ID=13549097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7450092A Expired - Lifetime JP2665295B2 (en) | 1992-03-30 | 1992-03-30 | Magneto-optical storage element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2665295B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8690264B2 (en) | 2010-03-31 | 2014-04-08 | Honda Motor Co., Ltd. | Wheel structure for saddle-ride type vehicle |
-
1992
- 1992-03-30 JP JP7450092A patent/JP2665295B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8690264B2 (en) | 2010-03-31 | 2014-04-08 | Honda Motor Co., Ltd. | Wheel structure for saddle-ride type vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2665295B2 (en) | 1997-10-22 |
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