RU1835086C - Носитель дл записи информации - Google Patents

Носитель дл записи информации

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Publication number
RU1835086C
RU1835086C SU904743833A SU4743833A RU1835086C RU 1835086 C RU1835086 C RU 1835086C SU 904743833 A SU904743833 A SU 904743833A SU 4743833 A SU4743833 A SU 4743833A RU 1835086 C RU1835086 C RU 1835086C
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Russia
Prior art keywords
aluminum alloy
magnesium
hafnium
layer
carrier according
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SU904743833A
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English (en)
Inventor
Синдо Киетака
Игараси Коити
Мизумото Кунихико
Хасимото Хидехико
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Мицуи Петрокемикал Индастриз, Лтд
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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/64Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242Record 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
    • G11B7/243Record 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
    • G11B2007/24302Metals or metalloids
    • G11B2007/24304Metals or metalloids group 2 or 12 elements (e.g. Be, Ca, Mg, Zn, Cd)
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242Record 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
    • G11B7/243Record 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
    • G11B7/2433Metals or elements of Groups 13, 14, 15 or 16 of the Periodic Table, e.g. B, Si, Ge, As, Sb, Bi, Se or Te
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    • G11B7/253Record 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
    • G11B7/2531Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
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    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
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    • G11B7/2532Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • G11B7/253Record 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
    • G11B7/2533Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • G11B7/253Record 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
    • G11B7/2533Record 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
    • G11B7/2534Record 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 polycarbonates [PC]
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • G11B7/253Record 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
    • G11B7/2533Record 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
    • G11B7/2538Record 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 polycycloolefins [PCO]
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • G11B7/257Record 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
    • G11B7/2578Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • G11B7/258Record 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 reflective layers
    • G11B7/2585Record 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 reflective layers based on aluminium
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/90Magnetic feature
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/922Static electricity metal bleed-off metallic stock
    • Y10S428/9265Special properties
    • Y10S428/928Magnetic property
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736Al-base component
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736Al-base component
    • Y10T428/12743Next to refractory [Group IVB, VB, or VIB] metal-base component

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Holo Graphy (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

Изобретение относитс  к среде дл . записи информации, имеющей металлический слой, конкретно, к среде дл  записи информации , обладающей хорошей коррозийной устойчивостью или стабильностью и небольшой зависимостью силы записи от линейной скорости. Цель изобретени  заключаетс  в повышении надежности при создании среды дл  записи информации за счет увеличени  коррозионной устойчивости и снижени  изменений мощности записи от линейной скорости носител , Сущность изобретени : носитель дл  записи информации содержит подложку и после- довательно сформированные на ней записывающий слой и металлический слой на основе алюмини , представл ющий сплав алюмини , содержащий, по меньшей мере, один элемент, выбранный из группы гафни  и ниоби  в количестве 0,1-10 эт.% о 1 пересчете на все атомы, образующие слой сплава алюмини . Сплав алюмини  может содержать 0,1-10 ат.% магни  в пересчете на все атомы, образующие слой сплава алюмини , при этом суммарное содержание гафни  и магни  составл ет 1-10 ат.%, з также 0,1-10 ат.% титана при суммарном содержании гафни , магни  и титана 1-10 ат.%. Кроме того, сплав алюмини  может дополнительно к гафнию и магнию содержать 0,1-1.0 ат.% хрома в пересчете на все атомы, образующие слой сплава алюмини , при этом суммарное содержание гафни , магни  и хрома составл ет 1-10 ат.%. СО СЛ О 00 CS

Description

Изобретение относитс  к среде дл  записи информации, имеющей металлический слой, конкретно, к среде дл  записи информации , обладающей хорошей коррозионной устойчивостью или стабильностью и небольшой зависимостью силы записи от линейной скорости.
Цель изобретени  заключаетс  в повышении надежности при создании среды дл  записи информации за счет увеличени  коррозионной устойчивости и снижени  изменений мощности записи от линейной скорости носител .
Носитель дл  записи информации содержит подложку и последовательно сформированные на ней записывающий слой и металлический слой на основе алюмини , представл ющий сплав алюмини , содержащий по меньшей мере, один элемент, выбранный из группы гафни  и ниоби  в
Ы
количестве 0.1-Ю ат.% в пересчете на все атомы, образующие слой сплава алюмини .
Сплав алюмини  может содержать 0,1- 10 ат.% магни  в пересчете на псе атомы, образующие слой сплава алюмини , при этом суммарное содержание гафни  и магни  составл ет 1-10 ат.%. а также 0,1-10 ат.% титана при суммарном содержании гафни , магни  и титана 1-10 ат.%.
Кроме того, сплав алюмини  может дополнительно к гафнию и магнию содержать 0,1-10 ат.% хрома в пересчете на все атомы, образующие слой сплава алюмини , при этом суммарное содержание гафни , маг- ни  и хрома составл ет 1-10 ат.%.
Помимо этого, сплав алюмини , кроме гафни , магни , титана может содержать V- 5 ат.% хрома пересчете на все атомы, образующие слой сплава алюмини , при этом суммарное содержание гафни , магни , титана и хрома составл ет 1-10 ат.%,
Записывающий слой может  вл тьс  магнитооптическим, а отражающий металлический слой может иметь толщину 1005000 А.
Между подложкой и записывающим слоем может быть нанесена защитна  пленка .
Хран ща с  в среде дл  записи информаци  считываетс  с помощью света, например , лазерного луча. Среды дл  записи информации этого типа конкретно включают: оптические диски посткриптумного типа , способные к дополнительной записи, но не способные к стиранию записанного, оптические диски перезаписывающего типа, такие как магнитооптические диски дл  записи и фазопеременные диски, способные к записи информации, также как и стиранию и воспроизведению записанной информации .
Материалы подложки не ограничены каким-то конкретными примерами. Однако, если лазерный луч падает на подложку, рекомендуетс , чтобы материал был прозрачным . Помимо неорганических материалов, таких как: стекло, алюминий и т.п., такие прозрачные материалы включают, например , органические материалы такие как: по- ли(металметакрилат), поликарбонат, полимерные сплавы поликарбоната с полистиролом , неупор доченные сополимеры циклоолефинов, типа, например, неупор доченные сополимеры циклоолефинов, по- ли-4-метил-1-пентен, эпоксидные смолы, полиэфирсульфоны, полисульфоны, имиды полиэфиров и т.п. Из указанных органических материалов рекомендуютс : полиметилме- такрилат, поликарбонат, неупор доченные
сополимеры циклоолефинов и неупор доченные сополимеры циклоолефинов.
Материал записывающего сло  не ограничен особыми примерами, однако если
примен етс  магнитооптический слой с моноаксиальной анизотропией, перпендикул рной поверхности сло , такой слой предпочтительно состоит из по меньшей мере , из одного члена, выбранного из 3d переходного металла и по меньшей мере одного элемента, выбранного из редкоземельного элемента, или состоит по меньшей мере из одного члена, выбранного из 3d переходного металла, коррозионноустойчивого метал5 ла и по меньшей мере оного элемента из редкоземельных.
Примен емые 3d переходные металлы включают Fe, Co. TI. V, Cr, Mn, NI, Си и Zn, из которых рекомендуютс  Fe или Со или
0 они оба.
Магнитооптические слои желательно содержат 3d переходный металл в количестве 30-85 ат.% (предпочтительно 40-70 ат.%). коррозионноустойчивый металл в ко5 личестве менее 30 ат.% (предпочтительно 5-25 ат.%) и редкоземельный элемент в количестве 5-50 ат.% (предпочтительно 25-45 ат.%).
Если записывающий слой относитс  к
0 физопеременному типу, то он состоит из Те или Se и пленки сплава Te-Ge-Sb, пленки сплава In-Sb-Te, пленки сплава Te-Ge-Cr или пленки сплава Te-Ge-Zn.
Толщина записывающего сло  может
составл ть 50-5000 А., предпочтительно
100-2000 А.
Используемые металлические слои,
0 описанные выше, имеют хорошую теплопроводность и в присутствии таких слоев центральные части макроуглублени  (питов) предохран ют от чрезмерного перегрева, в результате чего зависимость мощности ла5 зерного пучка от линейной скорости становитс  небольшой.
Защитна  пленка повышает чувствительность среды и действует в качестве усиливающей пленки. Такой защитный слой
Q желательно имеет более высокий, чем у подложки , показатель преломлени .
В одном из примеров при толщине мео
таллического сло  500 А. Оптимальна  величина мощности записи составл ет 3,7 мВт и 5,2 мВт при линейной скорости соответственно 5,7 м/с и 11,3 м/с.

Claims (7)

  1. Формула изобретени  1. Носитель дл  записи информации, содержащий подложку и последовательно
    сформированные на ней записывающей слой и отражающий металлический слой на основе алюмини , отличающийс  тем. что, с целью повышени  надежности за счет увеличени  коррозионной устойчивости носител  и снижени  изменений мощности записи от линейной скорости носител , металлический слой выполнен на основе сплава алюмини , содержащего 0,1-10 ат.% по меньшей мере одного элемента из группы гафни  и ниоби  в пересчете на все атомы сплава алюмини .
  2. 2.Носитель по п.1, о т л и ч а ю щ и и - с   тем. что сплав алюмини  дополнительно содержитО,1-10ат.% магни  в пересчете на все атомы сплава алюмини , при этом суммарное содержание гафни  и магни  составл ет 1-10 ат.%.
  3. 3.Носитель по п.2. отличаю щий- с   тем. что сплао алюмини  дополнительно содержит 0,1-10 ат.% титана в пересчете на все атомы сплава алюмини , при этом суммарное содержание гафни , магни  и титана составл ет 1-10 ат.%.
    0
    5
    0
  4. 4.Носитель по п.2, отличающий- с   тем. что сплав алюмини  дополнительно содержит 0,1-10 ат.% хрома в пересчете на все атомы сплава алюмини , при этом суммарное содержание гафни , магни  и хрома составл ет 1-10 ат.%.
  5. 5.Носитель по п.З, отличающий- с   тем. что сплав алюмини  дополнительно содержит 1-5 ат.% хрома в пересчете на все атомн сплава алюмини , при этом суммарное содержание гафнип, магни , титана и хрома составл ет 1-10 эт.%.
  6. 6.Носитель по пп.1-5, о т л и ч а ю щ и- й с   тем, что записывающий слой  вл етс  магнитооптическим.
  7. 7.Носитель по пп.1-5, о т л и ч а ю щ lift с   тем. что отражающий металлический
    о слой имеет толщину от 100 до 5000 А,
    Приоритет по пунктам. 17.04,89 по пп. 1,6 и 7; 20.06,89 по пп. 2 и 5.
    25
SU904743833A 1989-04-17 1990-04-16 Носитель дл записи информации RU1835086C (ru)

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CA2017226A1 (en) * 1989-05-23 1990-11-23 Kiyotaka Shindo Information recording media
US5500301A (en) * 1991-03-07 1996-03-19 Kabushiki Kaisha Kobe Seiko Sho A1 alloy films and melting A1 alloy sputtering targets for depositing A1 alloy films
DE69225771T2 (de) * 1991-11-07 1998-10-01 Toray Industries Optisches Aufzeichnungsmedium
US5948497A (en) * 1992-10-19 1999-09-07 Eastman Kodak Company High stability silver based alloy reflectors for use in a writable compact disk
US5972461A (en) 1998-01-06 1999-10-26 Imation Corp. Rewritable optical data storage disk having enhanced flatness
US6238763B1 (en) 1998-01-06 2001-05-29 Imation Corp. Rewritable optical data storage disk having enhanced flatness
JP4193185B2 (ja) * 2006-07-12 2008-12-10 独立行政法人産業技術総合研究所 無色透明にできる反射型調光薄膜材料

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JPS61156550A (ja) * 1984-12-27 1986-07-16 Matsushita Electric Ind Co Ltd 光熱磁気記録担体
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JPH0719396B2 (ja) * 1985-12-09 1995-03-06 ソニー株式会社 情報記録媒体
JPS62172545A (ja) * 1986-01-23 1987-07-29 Hitachi Maxell Ltd 光磁気記録媒体
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DE69028032T2 (de) 1997-01-23
KR900016955A (ko) 1990-11-14
ATE141436T1 (de) 1996-08-15
US5032470A (en) 1991-07-16
EP0393576B1 (en) 1996-08-14
EP0393576A2 (en) 1990-10-24
DE69028032D1 (de) 1996-09-19

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