JPS6058893A - 光記録媒体 - Google Patents

光記録媒体

Info

Publication number
JPS6058893A
JPS6058893A JP58166577A JP16657783A JPS6058893A JP S6058893 A JPS6058893 A JP S6058893A JP 58166577 A JP58166577 A JP 58166577A JP 16657783 A JP16657783 A JP 16657783A JP S6058893 A JPS6058893 A JP S6058893A
Authority
JP
Japan
Prior art keywords
optical recording
recording medium
film
sio2
crystallization
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
JP58166577A
Other languages
English (en)
Inventor
Yoshihiro Asano
浅野　義曠
Hironori Yamazaki
裕基 山崎
Susumu Fujimori
進 藤森
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP58166577A priority Critical patent/JPS6058893A/ja
Publication of JPS6058893A publication Critical patent/JPS6058893A/ja
Pending legal-status Critical Current

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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
    • G11B2007/24312—Metals or metalloids group 14 elements (e.g. Si, Ge, Sn)
    • 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
    • G11B7/24—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
    • G11B2007/24318—Non-metallic elements
    • G11B2007/2432—Oxygen
    • 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
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/2571—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing group 14 elements except carbon (Si, Ge, Sn, Pb)
    • 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
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25715—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing oxygen
    • 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
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25718—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing halides (F, Cl, Br, l)
    • 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
    • G11B7/00454—Recording involving phase-change effects
    • 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
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2531—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
    • 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
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2532—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising metals
    • 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
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • 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
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B7/2578—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 〔技術分野〕 本発明は、集光したレーザ光の熱作用により情報の記録
および％に％、このようにして記録した情報の光学的読
み出しに供する光記録媒体に関し、とくに、テルル（Ｔ
ｅ）等の相転移を利用した書替可能な光記録媒体に関す
るものである。
〔従来技術〕
一従来のヒートモードによる光記録媒体としては、金属
膜などに局部的に孔または変形を起こさせて情報を記録
するものが知られている。しかし、これらの光記録媒体
では情報の消去は不可能であシ、これらは、いわゆる追
記型光記録媒体として用いられている。
一３方、相転移を利用する光記録媒体としては、結晶質
−非晶質の相転移を利用するカルコゲナイドガラスを用
いたものおよび金属−半導体の相転移を利用する二酸化
バナジウム（ＶＯ２）　、硫化サマリウム（ＳｍＳ）等
を用いたものが知られている。
しかしながら、カルコゲナイドガラスを用いた記録媒体
では、結晶化によって生ずる結晶粒が大きくて、ノイズ
が大きくなりやすく、また転移によって膜に生ずる内部
歪が大きいので、膜に亀裂が入るなどの劣化が起こりや
すい。さらに１カルコゲナイドガラスを用いた記録媒体
では、非晶質化は膜を融点以上に熱し急冷することによ
ってなされるが、この際、温度が上がりすぎると膜が変
形しやすいなどのことから、記録・消去を繰り返し行な
うことは困難であった。
すいことおよび記録・消去を繰返すのに熱によるヒステ
リシス効果を利用するので、媒体を室温以下に冷却する
などして熱バイアスを加えなければならないことなどの
欠点を有していた。
〔目　的〕
本発明は、以上のような欠点を解消し、繰り返し記録・
消去が可能な光記録媒体を提供することを目的とするも
のであシ、本発明は、５１０２とＴｅとを同時に蒸着す
ることによって得られる膜では・５ｉｎ２がＴｅの凝集
を防ぐので、繰り返し結晶質−非晶質の相転移を行なっ
ても、Ｔｅが微細なままであシ、劣化を伴うことなしに
、記録・消去が可能であるという事実を確認し、その認
識のもとになしたものである。
〔発明の構成〕 すなわち、本発明では、ＴｅあるいはＴｏとＣｅ。
Ｓｅ　、　Ｅ３ｎ　、　Ｉｎ　、　Ｐｂ　、　Ｂｉ　、
　Ｓｂのうちの１つ以上との合金を含有したＳｉｎ、膜
を用いて光記録媒体を構成する。
〔実施例〕
以下、図面を参照しながら本発明の実施例を詳細に説明
する。
第１図は本発明光記録媒体の一例を示す断面図であり、
ここに、ｌは基板、２け基板／上ｅζ配置されたＴｅを
含有した酸化シリコン（Ｓｉｎ２）膜、３はこのＴｅを
含有した５ｉｎ２膜λ上に配置した保護層である。
基板／としては、アクリル樹脂などのプラスチック、ア
ルミニウム（Ａ４）などの金属あるいはガラスが用いら
れる。Ｔｅをき有した５１０２膜λは、Ｔｅ単独あるい
はＴｅと、ゲルマニウム（Ｇｅ）、セレｙ　（Ｓｅ　）
　＋スズ（Ｓｎ）、インジウム（Ｉｎ）、鉛（ｐｂ）、
ビスマス（Ｂｉ）およびアンチモン（ｓｂ）のうちの１
つ以上の材料との合金とＳｉＯ、と全同時に蒸着するこ
とによって基板ｌ上に形成さｆＬる。
あるいはまた、５ｉｎ２およびＴｅのターゲットを用い
、これらを同時にスノくツタすることによって基板！上
にＴｅを含有した５ｉｎ２膜λを付着させることもでき
る。保護層３は、５１０２およびＭｇＦ　２などの誘電
体蒸着膜または高分子塗布膜によって形成することがで
き、Ｔｅを含有した５１０２膜コがレーザ光照射を繰返
し受けることによって変形などの劣化を起すのを防止す
る役割を果たしている。
このような本発明光記録媒体においては、Ｔｅを含有し
た５ｉｎ２膜λ中のＴｅは非晶質状態でＳ１０゜膜中に
分散されておシ、Ｓ１０．膜λ中のＴｅは、レーザ光照
射による加熱で結晶化を起こして、光学的反射率の増加
および透過率の減少を生ずる。したがって、このような
光記録媒体においては、この結晶化により情報を記録し
、そして、結晶化を起こさない程度に強度の弱いレーザ
光を照射して、その反射強度あるい線透過強度を検出す
ることによって記録した情報を再生することができる。
また、このような光記録媒体においては、結晶化した部
分にパルス幅の短かい強いレーザ光を照射すると、この
部分はＴｅの融点以上に加熱された後急冷されるため、
ここでＴｅは結晶質から非晶質に相転移を起す。従って
、この非晶化によって情報の消去が行なわれる。
以上では、光記録媒体において、結晶化によって情報を
記録し、そして非晶化によって記録された情報を消去す
る場合について説明したが、＄１０□膜コをあらかじめ
結晶化させておけば、逆に非晶化によって情報を記録し
、結晶化によって記録された情報を消去することもでき
る。
なお、Ｔｅの結晶化の：ＩｉＲ度は５１０２膜コ中にお
けるＴｅの含有量に依存し、その含有量が増加すると、
結晶化温度は低下する傾向を示すが、その温度はｔｏｏ
〜／、２０℃と比較的低い。このため、＄１０２膜λは
高い記録感度を有している。
さらに、　５ｉｎ２膜−中［、Ｔｅの代わりにＴｏとＧ
ｅ　、　Ｓｅ　、　Ｓｎ　、　Ｉｎ　、　Ｐｂ　、　Ｂ
ｉおよびｓｂのうちの１つ以上との合金を含有させても
よく、この場合には、この合金の結晶化温度は上記Ｔｅ
単体の場合とｔｌとんど同じであるが、Ｔｅのみより高
速な記録に適した光記録媒体が得られた。
ところで、非晶質−結晶質の相転移に関して、Ｔｅを含
有した５１０２膜コの特徴の１つは、繰り返し転移を行
なっても結晶粒の大きさが微細なまま変化しないことで
あシ、このため劣化が生じないという仁とである。そし
てこのことは５１０２がＴｅの凝集を防止していること
に起因していると考えられる。
５ｉｎ２膜λ中におけるＴｅ　（単体）の含有量は、３
０〜りｊ容量％の範囲内であることが好ましい。
Ｔｅの含有量が３０容量％未満では、レーザ光を吸収し
にくくなって記録感度が低下する。他方、Ｔｅの含有量
がワ３容量％を越えると、耐酸化性が劣化して膜の経時
安定性が低下する。また、Ｔｅと、Ｇｅ　＊　Ｓｅ　＋
　Ｓｎ　＋　Ｉｎ　ｒ　Ｐｂ　＋　Ｂｉおよびｓｂのう
ちの１つ以上との合金における、Ｇｅ　、　Ｓｅ　、　
Ｓｎ　、　Ｉｎ。
Ｐｂ　、　Ｂｉおよびｓｂの含有量は、３０原チ％以下
であることが好ましい。
次に本発明光記録媒体の具体例について述べる。
実施例１ Ｓｉｎ２およびＴｅを電子ビーム蒸着によシ個別の蒸発
源から同時に蒸発させて、ガラス基板上に、Ｔｅを４０
容Ｉｔ％含有した５ｉｎ２ｖを１００　ｎｍの厚みで形
成し、次いでその上Ｋ　５ｉｎ２膜をｓｏ　ｎｍの厚み
で蒸着し光記録媒体を作製した。
このようにして作製した光記録媒体に対して波長１３０
　ｎｍの、半導体レーザを用いて配備・消去実験を行な
ったところ、レーザビーム径７．６μｍで、光記録媒体
上レーザパワーｓ　ｍＷ　Ｉ　／＜ルス＠　５ＯＯｎｓ
の条件でＴｅを含有した５ｉｎ２膜中のＴｅ　（非晶質
）に結晶化が生じ、そして、このようにして結晶化した
Ｔｅにレーザパワー１ｒ　ｍＷ　＋ノぐルスｌ１ｌｉｉ
ｌ　１００ｎＳの条件で非晶質化が生じた。再生は、レ
ーザバ＋７−　／　ｍＷ　、パルス幅！００　ｎｓの条
件で行なうことができ、そして記録状態に変化は与られ
なかった。そして、ｉｏｏ回以上の記録・消去実験後も
初期値と同じ再生信号出力が得られた。
実施例２ 実施例１のＴｅ０代わりにＴｅ、ｏＧｅ、。Ｓｅ、。を
用い、その他は実施例１と同様にして光記録媒体を作製
したところ、Ｔｅｇｏ　Ｇｅ、ｏＳｅ、。の結晶化はレ
ーザノぜワ−ｔ　ｍＷ　、パルス幅Ｊ００　ｎｓで生じ
、実施例１より高速の記録が可能であった。
実施例３ 実施例１のＴｅの代わりにＴｅ、。Ｉｎ４．を用いた。
結晶化はレーザパワーｊ　ｍＷ　、　ｔ：ルス幅３００
　ｎｓで生じた。
〔効　果〕
以上説明したように、本発明によれば、記録および消去
による劣化をなくして繰り返し記録・消去を行なうこと
ができる光記録媒体を提供することができる。また、５
ｉｎ２の効果によつ°Ｃ１優れた耐候性などの経時安定
性を示し、しかも機械的強度が大きく取扱いが容易な光
記録媒体を提供することができる。
【図面の簡単な説明】
第１図は本発明にかかる光記録媒体の一例を示す模式的
断面図である。 ｌ・・・基板、 コ・・・Ｔｅを含有した５１０２膜、 ３・・・保護層。 第１図 ス

Claims (1)

  1. 【特許請求の範囲】 １）　基板を有し、該基板上にＴｏを含有した５１０２
    膜を配置したことを特徴とず２光記録媒体。 ２、特許請求の範囲第１項記載の光記録媒体において、
    前記Ｔｅを含有した５１０２膜は、ＴｅのみあるいはＴ
    ｅと、Ｇｅ　、　Ｓｅ　、　Ｓｎ　＋　Ｉｎ　＋　Ｐｂ
    。 Ｂ１およびｓｂのうちの１つ以上の材料との合金を含有
    することを特徴とする光記録媒体。
JP58166577A 1983-09-12 1983-09-12 光記録媒体 Pending JPS6058893A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58166577A JPS6058893A (ja) 1983-09-12 1983-09-12 光記録媒体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58166577A JPS6058893A (ja) 1983-09-12 1983-09-12 光記録媒体

Publications (1)

Publication Number Publication Date
JPS6058893A true JPS6058893A (ja) 1985-04-05

Family

ID=15833844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58166577A Pending JPS6058893A (ja) 1983-09-12 1983-09-12 光記録媒体

Country Status (1)

Country Link
JP (1) JPS6058893A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200544A (ja) * 1986-02-27 1987-09-04 Toshiba Corp 光記録媒体
JPS6356827A (ja) * 1986-08-27 1988-03-11 Tdk Corp 情報記録媒体ならびに情報記録および消去方法
USRE42222E1 (en) * 1985-09-25 2011-03-15 Matsushita Electronic Industrial Co., Ltd. Reversible optival information-recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE42222E1 (en) * 1985-09-25 2011-03-15 Matsushita Electronic Industrial Co., Ltd. Reversible optival information-recording medium
JPS62200544A (ja) * 1986-02-27 1987-09-04 Toshiba Corp 光記録媒体
JPS6356827A (ja) * 1986-08-27 1988-03-11 Tdk Corp 情報記録媒体ならびに情報記録および消去方法

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