JPH047315B2 - - Google Patents
Info
- Publication number
- JPH047315B2 JPH047315B2 JP58087051A JP8705183A JPH047315B2 JP H047315 B2 JPH047315 B2 JP H047315B2 JP 58087051 A JP58087051 A JP 58087051A JP 8705183 A JP8705183 A JP 8705183A JP H047315 B2 JPH047315 B2 JP H047315B2
- Authority
- JP
- Japan
- Prior art keywords
- tellurium
- thin film
- recording
- recording medium
- silver
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24306—Metals or metalloids transition metal elements of groups 3-10
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24308—Metals or metalloids transition metal elements of group 11 (Cu, Ag, Au)
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00453—Recording involving spectral or photochemical hole burning
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は光学的な記録媒体に関するものであ
り、レーザ光等の光及び熱エネルギーを用いて情
報を高密度に記録し、かつ再生可能な記録媒体に
関する。[Detailed Description of the Invention] (a) Industrial Application Field The present invention relates to an optical recording medium, which records information at high density using light such as a laser beam and thermal energy, and is capable of reproducing information. related to recording media.
レーザ光線を利用して高密度な情報の記録・再
生を行う装置及び技術は公知である。そして光学
的記録材料については、レーザ光の照射によりピ
ツト（凹部）を形成するものと、照射部の光学的
特性を変化させるものとがある。本発明は、前者
の方式に関する。 Devices and techniques for recording and reproducing high-density information using laser beams are well known. Regarding optical recording materials, there are those that form pits (concavities) by irradiation with laser light, and those that change the optical characteristics of the irradiated area. The present invention relates to the former method.
(ロ) 従来技術
レーザ光等のエネルギービームを照射して、基
板上の金属等の薄膜を溶融あるいは蒸発させ、ピ
ツトを形成する方式の記録材料としては感度が高
く、基板上の記録層の膜厚が均一であり、記録信
号を長時間保持できることが必要である。(b) Prior art The recording material uses a method of melting or vaporizing a thin film of metal or the like on the substrate by irradiating it with an energy beam such as a laser beam to form pits, and is highly sensitive. It is necessary to have a uniform thickness and be able to retain recorded signals for a long time.
この方式の記録材料としてはテルルがよく知ら
れているが、テルルは、短時間に酸化して二酸化
テルルになり、透明になるために、光学的特性
（反射率、透過率等）が変化し、信号を再生する
ことができなくなるという欠点があつた。更に、
テルル薄膜では、粒塊等が発生しやすいため、均
一なテルル薄膜を得ることが難しいという欠点が
あつた。 Tellurium is well known as a recording material for this method, but since tellurium oxidizes in a short time to become tellurium dioxide and becomes transparent, its optical properties (reflectance, transmittance, etc.) change. However, the disadvantage was that the signal could not be reproduced. Furthermore,
Tellurium thin films have the disadvantage that it is difficult to obtain a uniform tellurium thin film because particles and the like are likely to occur.
(ハ) 目的
この発明は、上記欠点を改善し、長期間にわた
つて記録再生ができる記録媒体を提供することを
目的とする。(c) Purpose The purpose of the present invention is to improve the above-mentioned drawbacks and provide a recording medium that can be recorded and reproduced over a long period of time.
(ニ) 構成
本発明は、基板上にテルルとチタンと銀の非晶
質薄膜を形成し、記録信号の保持の長期化を図る
ように構成したものである。(d) Structure The present invention is structured so that an amorphous thin film of tellurium, titanium, and silver is formed on a substrate to extend the retention of recorded signals.
(ホ) 実施例
本発明に係る記録媒体は、テルル（Te）、チタ
ニウム（Ti）、銀（Ag）からなる非晶質薄膜で
ある。薄膜の構成は、
Te100−ｘ−yTixAgy（０＜ｘ＜50、０＜ｙ＜
50、ｘ、ｙはモル％）
である。(E) Example The recording medium according to the present invention is an amorphous thin film made of tellurium (Te), titanium (Ti), and silver (Ag). The structure of the thin film is Te100−x−yTixAgy (0<x<50, 0<y<
50, x and y are mol%).
かかる記録媒体を用いた場合、テルル薄膜に比
べて、より長期間光学的変化を抑えることができ
るので、記録信号の保持期間も長くできた。か
つ、記録感度も、テルル薄膜を用いた場合と同等
の感度で記録することができた。また、テルル・
チタン・銀の非晶質の薄膜であるために粒塊等の
発生がなく、均一な記録層を形成することができ
る。 When such a recording medium is used, it is possible to suppress optical changes for a longer period of time compared to a tellurium thin film, so that the recording signal can be retained for a longer period of time. Moreover, recording sensitivity was also comparable to that when using a tellurium thin film. In addition, tellurium
Since it is an amorphous thin film of titanium and silver, no grain agglomeration occurs, and a uniform recording layer can be formed.
本発明の実施例を図面に従つて説明すると、基
板１上に、蒸着またはスパツタリングによつて、
上述の組成をもつ非晶質薄膜２を形成する。これ
に上方（基板側でない方）または下方（基板側）
より再生レーザ光を照射し、記録層にて反射され
たレーザ光を、同じく上方または下方に配置され
た読出し手段で受けることにより、情報を再生す
ることができる。 An embodiment of the present invention will be described with reference to the drawings. On a substrate 1, by vapor deposition or sputtering,
An amorphous thin film 2 having the above composition is formed. Above (not on the board side) or below (on the board side)
The information can be reproduced by irradiating the recording layer with a reproduction laser beam and receiving the laser beam reflected by the recording layer by a reading means also disposed above or below.
(ヘ) 効果
テルル・チタン・銀の非晶質薄膜を用いたの
で、従来のテルル薄膜に比較して、記録感度は殆
んど同等で、記録信号の寿命をより長くすること
ができ、また容易に均一な記録層をつくることが
できるという効果が得られた。(F) Effects Since an amorphous thin film of tellurium, titanium, and silver is used, the recording sensitivity is almost the same as that of conventional tellurium thin films, and the life of the recorded signal can be extended. The effect was obtained that a uniform recording layer could be easily formed.
図面は、本発明に係る記録媒体の実施例の構成
を示す図である。
１……基板、２……テルル・チタン・銀非晶質
薄膜。
The drawings are diagrams showing the configuration of an embodiment of a recording medium according to the present invention. 1...Substrate, 2...Tellurium/titanium/silver amorphous thin film.
Claims (1)
情報に応じたピツトを得る光学記録媒体であつ
て、基板上にテルル（Te）とチタン（Ti）と銀
（Ag）［Te（100−ｘ−ｙ）TixAgy、但し、０＜
ｘ＜50、０＜ｙ＜50、ｘ、ｙはモル％］を主成分
とする非晶質薄膜を形成した光学記録媒体。1 An optical recording medium that obtains pits according to information by optical or thermal energy irradiation, and is made of tellurium (Te), titanium (Ti), and silver (Ag) [Te (100-x-y)] on a substrate. TixAgy, however, 0<
An optical recording medium formed with an amorphous thin film whose main components are x<50, 0<y<50, x and y are mol%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58087051A JPS59213037A (en) | 1983-05-18 | 1983-05-18 | Optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58087051A JPS59213037A (en) | 1983-05-18 | 1983-05-18 | Optical recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59213037A JPS59213037A (en) | 1984-12-01 |
| JPH047315B2 true JPH047315B2 (en) | 1992-02-10 |
Family
ID=13904140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58087051A Granted JPS59213037A (en) | 1983-05-18 | 1983-05-18 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59213037A (en) |
-
1983
- 1983-05-18 JP JP58087051A patent/JPS59213037A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59213037A (en) | 1984-12-01 |
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