JP2010055680A - 磁気記録媒体用保護膜の形成方法、該方法で形成された保護膜および該保護膜を備えた磁気記録媒体 - Google Patents
磁気記録媒体用保護膜の形成方法、該方法で形成された保護膜および該保護膜を備えた磁気記録媒体 Download PDFInfo
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 42
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 238000009832 plasma treatment Methods 0.000 claims abstract description 23
- 229910052786 argon Inorganic materials 0.000 claims abstract description 21
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims abstract description 15
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 13
- 238000004381 surface treatment Methods 0.000 claims abstract description 8
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 7
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 7
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims description 50
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 abstract description 22
- 238000001179 sorption measurement Methods 0.000 abstract description 19
- 238000011109 contamination Methods 0.000 abstract description 10
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- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 6
- 239000005977 Ethylene Substances 0.000 description 6
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- 238000000576 coating method Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
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- 238000003618 dip coating Methods 0.000 description 4
- 239000010702 perfluoropolyether Substances 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000004566 IR spectroscopy Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910019222 CoCrPt Inorganic materials 0.000 description 1
- 229910003321 CoFe Inorganic materials 0.000 description 1
- 229910019233 CoFeNi Inorganic materials 0.000 description 1
- 229910002441 CoNi Inorganic materials 0.000 description 1
- 229910018979 CoPt Inorganic materials 0.000 description 1
- 229910019001 CoSi Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910018104 Ni-P Inorganic materials 0.000 description 1
- 229910018536 Ni—P Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
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- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
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- 239000004033 plastic Substances 0.000 description 1
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- 229910000702 sendust Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
- G11B5/7379—Seed layer, e.g. at least one non-magnetic layer is specifically adapted as a seed or seeding layer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
- G11B5/667—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers including a soft magnetic layer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/736—Non-magnetic layer under a soft magnetic layer, e.g. between a substrate and a soft magnetic underlayer [SUL] or a keeper layer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
- G11B5/7369—Two or more non-magnetic underlayers, e.g. seed layers or barrier layers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/8408—Processes or apparatus specially adapted for manufacturing record carriers protecting the magnetic layer
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
【解決手段】(1)基体と該基体上に形成される金属膜層とを含む積層体の上に、炭化水素ガスを原料として用いるプラズマCVD法によって保護膜を形成する工程と;(2)工程(1)で形成した保護膜の表面処理工程であって、(2a)アルゴンガス中でのプラズマ処理と、(2b)少なくとも窒素ガスを含むガス中でのプラズマ処理とを含む表面処理工程とを含むことを特徴とする磁気記録媒体用保護膜の形成方法。
【選択図】図1
Description
(1) 基体と該基体上に形成される金属膜層とを含む積層体の上に、炭化水素ガスを原料として用いるプラズマCVD法によって保護膜を形成する工程と、
(2) 工程(1)で形成した保護膜の表面処理工程であって、
(2a) アルゴンガス中でのプラズマ処理と、
(2b) 少なくとも窒素ガスを含むガス中でのプラズマ処理と
を含む表面処理工程と
を含むことを特徴とする。ここで、工程(2a)は、工程(1)と工程(2b)との間に実施することが望ましい。
(1) 基体と該基体上に形成される金属膜層とを含む積層体の上に、炭化水素ガスを原料として用いるプラズマCVD法によって保護膜を形成する工程と、
(2) 工程(1)で形成した保護膜の表面処理工程であって、
(2a) アルゴンガス中でのプラズマ処理と、
(2b) 少なくとも窒素ガスを含むガス中でのプラズマ処理と
を含む表面処理工程と
を含むことを特徴とする。
最初に、直径95mm、厚さ1.75mmのアルミニウム基体上に、CoZrNbからなる膜厚40nmの下地層、Ruからなる膜厚15nmの中間層、およびCoCrPt−SiO2からなる膜厚15nmの磁気記録層を順次積層して金属膜層を形成した。
窒素プラズマ処理の際のガスを、流量30sccmのアルゴンガスと流量20sccmの窒素ガスとの混合ガスから、流量30sccmの窒素ガスに変更したことを除いて実施例1の手順を繰り返して、サンプルを得た。
実施例1と同様の手順により、アルミニウム基体上への金属膜層の形成、DLC膜の形成、およびアルゴンプラズマ処理を実施した。
アルゴンプラズマ処理を行わなかったことを除いて実施例1の手順を繰り返して、サンプルを得た。
2 アルゴンガスの流量
3 窒素ガスの流量
Claims (4)
- (1) 基体と該基体上に形成される金属膜層とを含む積層体の上に、炭化水素ガスを原料として用いるプラズマCVD法によって保護膜を形成する工程と、
(2) 工程(1)で形成した保護膜の表面処理工程であって、
(2a) アルゴンガス中でのプラズマ処理と、
(2b) 少なくとも窒素ガスを含むガス中でのプラズマ処理と
を含む表面処理工程と
を含むことを特徴とする磁気記録媒体用保護膜の形成方法。 - 工程(1)と工程(2b)との間に工程(2a)を実施することを特徴とする磁気記録媒体用保護膜の形成方法。
- 請求項1または2に記載の磁気記録媒体用保護膜の形成方法で形成された磁気記録媒体用保護膜。
- 基体と、該基体上に形成される金属膜層と、請求項1または2に記載の磁気記録媒体用保護膜の形成方法で該金属膜層上に形成された保護膜とを備えたことを特徴とする磁気記録媒体。
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JP2008218568A JP5093686B2 (ja) | 2008-08-27 | 2008-08-27 | 磁気記録媒体用保護膜の形成方法 |
US12/549,244 US8182883B2 (en) | 2008-08-27 | 2009-08-27 | Method of forming a protective film for a magnetic recording medium, a protective film formed by the method and a magnetic recording medium having the protective film |
US13/453,321 US8865269B2 (en) | 2008-08-27 | 2012-04-23 | Method of forming a protective film for a magnetic recording medium, a protective film formed by the method and a magnetic recording medium having the protective film |
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JP2008218568A JP5093686B2 (ja) | 2008-08-27 | 2008-08-27 | 磁気記録媒体用保護膜の形成方法 |
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Publication Number | Publication Date |
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JP2010055680A true JP2010055680A (ja) | 2010-03-11 |
JP5093686B2 JP5093686B2 (ja) | 2012-12-12 |
Family
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JP (1) | JP5093686B2 (ja) |
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US8980448B2 (en) | 2010-11-02 | 2015-03-17 | Fuji Electric Co., Ltd. | Magnetic recording medium including an amorphous carbon protective film |
JP2014114492A (ja) * | 2012-12-11 | 2014-06-26 | Yuutekku:Kk | プラズマcvd装置及び磁気記録媒体の製造方法 |
WO2015072843A1 (en) | 2013-11-14 | 2015-05-21 | Fuji Electric (Malaysia) Sdn Bhd | Method for manufacturing carbon-containing protective film |
JP2016517996A (ja) * | 2013-11-14 | 2016-06-20 | フジ エレクトリック (マレーシア) エスディーエヌ ビーエイチディー | カーボン系保護膜の製造方法 |
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US20120207946A1 (en) | 2012-08-16 |
US20100086808A1 (en) | 2010-04-08 |
US8865269B2 (en) | 2014-10-21 |
US8182883B2 (en) | 2012-05-22 |
JP5093686B2 (ja) | 2012-12-12 |
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