TWI263687B - Sputtering target, optical information recording medium and process for producing the same - Google Patents

Sputtering target, optical information recording medium and process for producing the same Download PDF

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Publication number
TWI263687B
TWI263687B TW093140517A TW93140517A TWI263687B TW I263687 B TWI263687 B TW I263687B TW 093140517 A TW093140517 A TW 093140517A TW 93140517 A TW93140517 A TW 93140517A TW I263687 B TWI263687 B TW I263687B
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Taiwan
Prior art keywords
film
recording medium
optical information
sputtering
information recording
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TW093140517A
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English (en)
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TW200528567A (en
Inventor
Hideo Takami
Masataka Yahagi
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Nippon Mining Co
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Publication of TW200528567A publication Critical patent/TW200528567A/zh
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/34—Sputtering
    • C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
    • C23C14/3414—Metallurgical or chemical aspects of target preparation, e.g. casting, powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/547—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on sulfides or selenides or tellurides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/08—Oxides
    • C23C14/086—Oxides of zinc, germanium, cadmium, indium, tin, thallium or bismuth
    • 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
    • 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/266—Sputtering or spin-coating layers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3286—Gallium oxides, gallates, indium oxides, indates, thallium oxides, thallates or oxide forming salts thereof, e.g. zinc gallate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
    • 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
    • G11B2007/25706—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 transition metal elements (Zn, Fe, Co, Ni, Pt)
    • 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
    • G11B2007/25708—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 13 elements (B, Al, Ga)
    • 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
    • G11B7/253—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
    • G11B7/258—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 reflective layers
    • G11B7/259—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 reflective layers based on silver

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  • Chemical & Material Sciences (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
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  • Inorganic Chemistry (AREA)
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  • Physical Vapour Deposition (AREA)
  • Compositions Of Oxide Ceramics (AREA)
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Description

1263687 九、發明說明： 【發明所屬之技術領域】 本^月係關於光貢訊記錄媒體用薄膜（特別是作為保護 膜製造^法以及可適用於該等之滅鍍乾。該藏鍍膜么 貝^安疋成膜速度快、與記錄層之密合性以及機械 Φτ [生良士子且透過率咼’而由於係以非硫化物系所構成， 故使鄰接之反射層、記錄層不易產生劣化。 【先前技術】 以往，相交化型之光資訊記錄媒體之保護層一般主要 使用之ZnS-Si〇2，其於光學特性、熱特性及與記錄層之密 合性等皆具有優異之特性，故廣泛地被使用。 仁7曰以監光（Blue-ray)為代表之覆寫型DVD，強烈 要求增加覆寫次數、大容量化及高速記錄化。 光資訊記錄媒體之覆寫次數會變少的原因之一，係因 保護層znS_Sl〇2之硫成分擴散到被該保護層ZnS_Si〇2夾持 之§己錄層材内。 又，為了大容1化、高速記錄化，而將具有高反射率 及高熱傳導特性之純Ag* Ag合金使用於反射層材，但該 反射層亦以鄰接於保護層材ZnS_Si〇2之方式配置。 因此，此情形亦同樣地，會因硫成分從ZnS_Si〇2擴散， 而造成純Ag或Ag合金反射層材腐蝕劣化，成為引起光資 訊記錄媒體之反射率等特性劣化之要因。 作為防止該等硫成分擴散之對策，於反射層與保護 5 1263687 層口己錄層與保濩層之間設置以氮化物或碳化物為主成分 中間層但’隨積層數之增加，會發生產能降低及成本 增加的問題。 為解決上述問顳，告放+么〆 、 田矛力之w係將保護層材取代為不含 瓜化物而僅含氧化物之材料，並找出具有與同等 以上之光學特性及非晶質安定性之材料。 又，znS-Sl〇2等陶，因體電阻率高，故無法以直 流機鑛裝置進行相，通㈣、使用高頻_(rf)裝置。 然而，該高頻濺鍍（RF)裝置不僅裝置本身昂貴，且有濺 鑛效率差、耗電量大、控制困難、成膜速度慢等許多缺點。 又，為提汁成膜速度而施加高電力時，會使基板溫度 升高，造成聚碳酸酯製基板產生變形之問題。 、；、上所述，不使用ZnS、即不含硫成分之透明導電 材料已被提出（參見專利文獻丨、專利文獻2)。 '、、、而’專利文獻1有產生光學特性及非晶質性變差區 的問題’而專利讀2則有無法得到充分的成膜速度、產 生非晶質性變差區的問題。 專利文獻1:日本特開2000— 256〇59號公報 專利文獻2··日本特開2〇〇〇— 256〇6i號公報 【發明内容】 ^本發明係關於光資訊記錄媒體用薄膜（特別是作為保護 版)及其製造方法以及可適用於該等之濺鍍靶，該濺鍍膜之 非晶質性安定、成膜速度快、與記錄層之密合性以及機械 1263687 特性優異、且透過率高，並且係以非硫 鄰接之反射層、t @ ；，L物糸所構成，故 口己錄層不易發生劣化。 訊記錄媒體特性以及大㈣善生產性。9 提昇光資 為解決上述課題，本發明人# _ Η & 現，將習知之保護層材 研九、、、。果發 僅含氧化物之材料 -1代為下述不含硫化物而 3乳化物之材枓，可確保與Zns_sl 性及非晶質安定性，廿θ π > A’ J寺之先學特 並且可尚速成膜、而上 錄媒體之特性並提高生產性。 ϋ貝己 基於以上發現，本發明提供·· 1) 一種濺鍍靶，i特糌糸 人^ 八特铽為，係於In2〇3-zn〇-Sn〇2李福 合氧化物（以sn〇2為主成分） 2糸钹 风刀J宁添加選自Ta、Y* 種或2種元素之氧化物之分 “、 物之材枓所構成、2)如υ之濺鍍靶， ，、、以Ί Υ之任1種或2種元素之氧化物作為Α時，係 ° 元素比為 In/(In+Zn + Sn + A) = 〇.〇〇5 〜0.41 、
Zn/(In + Zn + Sn+A) = 〇.〇3〜〇 45
Sn/(In + Zn + Sn+A).〇.13^.82 . A/(In + Zn+Sn+A) = O.OS^〇 所構成之氧化物、3)如D或2)之濺鑛革巴，其中以Ta、 任1種或2種元素之氧化物為Α時，係以 (Sn + A)/(In + Zn + Sn + A卜〇.45〜〇 92所構成之氧化物。 又5本發明提供4)如+3)中任一項之濺鍍靶，其相對 密度為90%以上、5)—種光資訊記錄媒體及其製造方法，其 特徵為，使用上述1)〜4)中任一項之濺鍍靶至少作成薄骐， 而形成光資訊記錄媒體構造之一部分、6) 一種光資訊記錄媒 體及其製造方法，其特徵為，使用上述丨）〜〗）任一項之濺鍍 1263687 萆巴至少作成薄膜，而形成光資訊 且邊濤膜係配置成鄰接於記錄層 記錄媒體構造之 或反射層。 一部分 m 丄 rvi 作為件蠖膜）及f芒大土 "不租用 '涛& (特別是 作為保及錢方法以及適用於該等之賤 層材ZnS-Si02取代為石人访儿& 將保複 代為不含硫化物而僅含氧化物之材料 此抑制鄰接反射層及印样展阴& , 寸错 曰及。己錄層因硫而劣化，
ZnS-Sl〇2同等或以上之先風胜地β & 卫且具備與 、± a “ 之先予特性及非晶質安定性，而可言 速成月关’且具有血印料爲——人 门 …己錄層之欲合性、機械特性優里、透' 率高之優異特性。 '透過 又， 體之特性 由於使用本材料系’而具有能改善光資 、亚大幅提昇生產性等優異效果。 訊記錄媒 【實施方式】 本發明之濺鍍靶，係於 (以Sn〇2為主成分）中添加 氧化物之材料所構成。
In2〇3_Zn〇_Sn〇2系複合氧化物 Ta Y之任1種或2種元素之 λ材料”光學#性及膜之非晶質性安定，而適用妒 相變^型光記錄媒體之保護層材，且減鐘成膜速度亦快。、 於本材料系中谁_牛、奋旦 ， 所 V週置冰刀口丁a205、γ2〇3，藉此可使 非日日貝性更安定且透過率古， ^ ^ 手更间故適用於覆寫速度快之相 ’交化纟己錄媒體或藍光雷射李 兀田射糸相、交化記錄媒體用保護層材。 又’特別是本發明之濺鍍靶，以Ta、γ之任！種或2
種兀素之氧化物作A τ "τ 扨作為Α訏，較佳為以各元素比為
In/(In+Zn + Sn+A)=〇.〇〇5^〇.41 1263687 211/(111 + 211 + 811 + 八)二0.03〜0.45
Sn/(In + Zn + Sii + A) = 〇. 13 〜〇·82、A/(In + zn + Sn+A) = 0.〇8〜〇.66 所構成之氧化物。其原因在於可維持非晶質安定性且罝有 光學特性良好之範圍。若脫離上述數值範圍，則上述特性 會有變差的傾向。 再者，本發明之濺鍍靶，亦可為以丁&、γ之任1種或2 種兀素其氧化物作為a時，以 (Sn + A^In + Zn + Sn + A) = 〇·45〜0.92所構成之氧化物的材料來 構成H彳以進—步改善光學特性及成膜速度。 又本發明之濺鍍靶，可將相對密度設為90%以上。 提高密度具有可提高濺鍍膜均一度，且抑制濺鍍時粒子產 生之效果。 座 次^使用如上述之濺鍍靶，可以供至少作成薄膜而形成光 :汛5己錄媒體構造一部分之光資訊記錄媒體。並且 構1一 j上述濺鍍靶至少作成薄膜而形成光資訊記錄媒體 丄=部分、且該薄膜係配置成鄰接於記錄層或反射声之 光貢訊記錄媒體。 曰 以s ^發明藉由以In2〇3、Zn0及Sn〇2之氧化物所構成之 二:n〇2气主成分之材料，可以保有導電性，藉此，可依所 ^ 之材个斗，以直流錢鍍（DC濺鍍）形成薄膜。 C氣鍍與RF濺鍍相比，因成膜速度快且濺鍍效古 而較為優1 n ^r^ 旦小1異。且DC濺鍍裝置廉價、容易控制，且具有耗恭
里少等優點。 I 又，藉由調整光學特性，可使保護膜本身之膜厚變薄， 1263687 故可Μ進一步發揮生產性提昇、基板加熱防止效果。 又’使用本發明濺鍍靶所形成之薄膜，係形成光資訊 §己錄媒體構造之一部分2 刀且配置成鄰接於記錄層或反射層， 但如上述，因無使用硫化 Ψ 敌不曰有^之〉可染，且硫成 分不會擴散到配置成以保護声欢 更層爽持之圯錄層材中，而對於 防止記錄層劣化有顯著的效果。 、 又為了大谷里化、高速記錄化，而於反射層材使用 具有高反射率及高熱傳導特性之純Ag^g合金，由於硫 成分亦不會擴散至鄰接之反射層，而同樣能防止反射層材 之腐餘劣A、光資訊記錄媒體之反射率等特性變差， 優異的效果。 a 本發明之物巴’可將平均粒徑以下之各構成元 素之乳化物粉末'以常溫燒結或高溫加壓燒結來製造。藉 此，可以得到相對密度9〇%以上之賤鍍靶。此場合，較‘ 為於燒結前將以氧化錫為主成分之氧化粉末先於 _〜mot進行預燒結。將該預燒結後粉碎為_以下之 粉末作為燒結用原料。 ,再者，藉由使用本發明濺鍍靶，可提昇生產性，並得 到品質優異之材料’而具有能以低成本安线製造具有2 碟保護膜之光記錄媒體之顯著效果。 本發明之濺鐘革巴之密度提昇，可減少空洞使結晶粒微 叔化、且能絲之滅鍵面均勻平滑，故可減少崎時產生 之顆粒及結球（nodule)，更具有延長數壽命之顯著效果， 而能減小品質之偏差、提昇量產性。 10 1263687 以下，依據實施例及比較例進行說明。又，本實施例 為-例’並未因此例而產生任何限制、亦即，本發明僅 為專㈣範圍所限制者’而包含實施例以外的各種變形。 (實施例1〜6) 粉、 準備純度4N之5降以下之In2〇3粉、Sn〇2粉、τ⑽ 丁2〇3粉及純度4Ν之5/πη以下之Ζη〇粉，調和成表 及表2所示組成’進行濕式混合、乾燥後，於^⑽。c進行 預燒結。
然後，將該預燒結粉以濕式微粉碎至平均粒徑為 止後，添加結合劑，並以噴霧乾燥機進行造粒。將該造粒 粉以低溫進行加壓成形，並於氧氣環境氣氛、13〇〇r進行常 溫燒結，在將此燒結材以機械精加工成靶形狀。該乾之構 成成分、組成比（In/(In + Zn+Sn + A))、（Zn/(In+Zn + Sn + A))、 (Sn/(In + Zn+Sn+A))、（A/(In+Zn+Sn+A))係示於表 1 及表 2。
11 1263687 表1 例 構成成分 組成 In/(In+Zn+Sn+A) Zn/(In+Zn+Sn+A) Sn/(In+Zn+Sn+A) A/(In+Zn+Sn+A) 透過率 633nm(%) 折射率 633nm 非晶質性 濺鍍方式 成膜速度(A/ 秒） 實施例 丨丨12〇3 0.11 95 2.2 1.2 DC 4.5 ) ZnO 0.21 Sn02 0.54 Ta2〇5 0.14 實施例 1Π2〇3 0.07 98 2.1 1.0 RF 1.8 2 ZnO 0.14 Sn〇2 0.34 Ta2〇5 0.45 實施例 ln203 0.13 97 2.0 1.0 RF 2.2 3 ZnO 0.32 Sn02 0.38 Ta205 0.17 實施例 ln：〇3 0.34 96 2.1 1.3 DC 3.7 4 ZnO 0.17 Sn02 0.34 Ta205 0.15 實施例 lll2〇3 0.12 98 2.1 1.0 RF 2.1 5 ZnO 0.17 Sn02 0.46 Y2〇3 0.25 比較例 ln203 0.04 82 2.3 2.0 DC 5.8 1 ZnO 0.06 Sn02 0.84 Ta2〇5 0.06 比較例 ln203 0.01 98 2.0 1.5 RF 0.5 2 ZnO 0.02 SnO： 0.15 Ta2〇5 0.82 比較例 ln203 0.46 89 2.0 3.1 DC 4.6 3 ZnO 0.12 Sn〇i 0.35 Y2O3 0.07 非晶質性，係以施加退火（600°C、氬環境氣氛、30分鐘）之 成膜樣本之XRD測定之對20 = 20〜6(^範圍中非成膜玻璃基 板之最大峰值強度比表示。 12 1263687 表2 例 構成成分 組成 ln/(In+Zn+Sn+A) Zn/(In+Zn+Sn+A) Sn/(In+Zn+Sn+A) A/(In+Zn+Sn+A) 透過率 633nm(%) 折射率 633nm 非晶質性 濺鍍方式 成膜速度(人/ 秒） 實施例 ΙΠ]〇3 0.05 98 2.2 1.3 RF 1.4 6 ΖηΟ 0.08 Sn〇2 0.22 Y2〇3 0.65 比較例 1η2〇3 0.09 95 2.1 2.1 RF 0.4 4 ΖηΟ 0.47 SnO： 0.05 Υ2Ο3 0.38 比較例 5 ZnSSiO： 20mol%SiO2 98 2.1 1.1 RF 3.7 非晶質性，係以施加退火（600°C、氬環境氣氛、30分鐘）之 成膜樣本之XRD測定之對2卜20〜60G範圍中非成膜玻璃基 板之最大峰值強度比表示。 使用經上述精加工之6英寸φ Φ尺寸之$巴，進行藏鑛。 濺鍍條件，係設為DC濺鍍、RF濺鍍、濺鍍能量1000W、 氬氣壓力〇.5Pa，以1500人為目標膜厚進行成膜。 將成膜樣本之透過率（波長63 3nm)%、折射率（波長 63 3nm)、非晶質性（以施加退火處理（600°C、氬環境氣氛、 30分鐘）之成膜樣本之乂110((：11—：^〇!、401^¥、3〇111人）測定之 對2卜20〜60Q範圍内未成膜玻璃基板之最大峰強度比表 示）、及濺鍍方式與成膜速度（A/秒）之測定結果等，示於表1 及表2。 由以上結果，實施例1〜6之濺鍍靶，其相對密度達 90〜98%，而可實施安定的DC或RF濺鍍。且，成膜速度可 達到1.8〜4.5人/秒，具極佳之錢鑛性。 濺鍍膜之透過率達到 95〜98%(633nm)，折射率為 2.0〜2.2，且未見特定之結晶峰，而具有安定之非晶質性 13 1263687 (1 · 0〜1.3 ) 〇 本實施例之靶由於不使用ZnS，故不 u、-：九π、昔， ％生因硫之擴散 及万氷而¥致光資訊記錄媒體之特性劣 力1ϋ。又，盘德诂 較例相比’成膜樣本之透過率、折射率、# 纖、成膜速度皆表示良好之值，且亦；;= 分組成進行DC濺鍍。 以 (比較例1〜5)
如表1及表2所示，準備與本發明條件不同之原料粉 成分：組成比的材料，特別於比較例5中準備加原料粉， 並與實施例以同樣條件製作把，並使用該乾形成滅鑛膜。 結果同樣示於表1及表2。 脫離本發明組成比條件之比較例其成分與組成，例如 比較例1，由於Sn氧化物之含量多且Ta氧化物含量少，故 雖成膜速度快但會得到透過率82%、折射率2·3及非晶質性 2.0的不良結果。 關於比較例2，由於Ζη氧化物量少且Ta氧化物量多，
故非晶質’!生不佳、且成膜速度為〇.5人/秒，錢著不佳之結 果0 關於比較例3，由於In氧化物量多且γ氧化物量少， 故透過率為89%、且非晶質性為3.1，不佳。 關於比較例4，由於ZnO量多，相反的Sn02量少，故 非晶質性不佳、成膜速度為〇·4 A/秒，為顯著不佳之結果。 又’特別是比較例5中含有多量ZnS，而為有受硫污染 之虞的材料。 14 1263687 —使用本發明之濺鍍靶所形成之薄膜，形成光資訊記錄 、構4之邛分，由於不使用ZnS，故不會有硫成分擴散 .=°己錄層材，藉此而具不使記錄層劣化之顯著效果。又， /、有回反射率、高熱傳導性之純Ag或Ag合金使用於鄰 2之反射層時，亦不會有硫成分朝該反射層擴散，而同樣 月匕防止反射層腐蝕劣化而抑制特性劣化，具有優異的效果。 再者，將非晶質性安定化、並賦予靶導電性，且使相 2山度達90%以上之咼密度化，故可依材料進行安定的 濺鍍。並且，可使該DC濺鍍之特徵、即濺鍍之控制性變容 易，且提高成膜速度，並能提昇濺鍍效果，而具有顯著效 T二又，可減少成膜時濺鍍時產生顆粒（產塵）或結球、滅少 -質偏差、提昇量產性，而具能以低成本、安定地製造具 有光碟保護膜之光記錄媒體，而具有顯著效果。 【圖式簡單說明】 【主要元件符號說明】 15

Claims (1)

1263687 2006.0 作 巾糊娜正/替換本 1 · 一種濺鑛乾，其特徵在於^ 饤铽在於於1n2〇3-Zn〇-Sn02系複 合氧化物（以Sn02為主成分）中添加選自丁&、γ之任】 種或2種元素之氧化物之材料所構成；當該“丁a、γ之 任1種或2種之元素時，係以各元素比為 In/(In+Zn + Sn + A) = 0.〇〇5〜〇.41 Zn/(In + Zn + Sn + A) = 〇.〇3 〜〇_45 Sn/(In+Zn + Sn + A)=〇.13-0.82 > A/(In+Zn + Sn+A)=〇.08-0.66 所構成之氧化物。 2·如申請專利範圍第1項之濺鍍靶，其中，當該a為 Ta 、 γ之任1種或2種之元素時曰，係以 (Sn+A)/(In + Zn+Sn+A) = 0.45〜0.92 所構成之氧化物。 3.如申請專利範圍第1項之濺鍍靶，其相對密度係 以上。 4.如申請專利範圍第2項之濺鍍靶，其相對密度係9〇% 以上。 5 · —種光資訊記錄媒體，其特徵在於，係使用申請專 利範圍第1〜4項中任一項之濺鍍靶至少作成薄膜，而形成 光寅έ己錄媒體構造之一部分。 6. —種光資訊記錄媒體’其特徵在於，係使用申清專 利範圍第1〜4項中任一項之濺鍍靶至少作成薄膜，而形成 光資訊記錄媒體構造之一部》，且該薄膜配置成鄰接於圮 錄層或反射層。 ' ° 16
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