KR890015208A - 고밀도 종방향 자기 기록용 박막 매체 - Google Patents

고밀도 종방향 자기 기록용 박막 매체

Info

Publication number
KR890015208A
KR890015208A KR1019890003513A KR890003513A KR890015208A KR 890015208 A KR890015208 A KR 890015208A KR 1019890003513 A KR1019890003513 A KR 1019890003513A KR 890003513 A KR890003513 A KR 890003513A KR 890015208 A KR890015208 A KR 890015208A
Authority
KR
South Korea
Prior art keywords
thin film
high density
magnetic recording
longitudinal magnetic
film medium
Prior art date
Application number
KR1019890003513A
Other languages
English (en)
Other versions
KR920001983B1 (ko
Inventor
알. 나타라잔 방갈로
지. 웜슬리 로버트
Original Assignee
휴렛트-팩카드 캄파니
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 휴렛트-팩카드 캄파니 filed Critical 휴렛트-팩카드 캄파니
Publication of KR890015208A publication Critical patent/KR890015208A/ko
Application granted granted Critical
Publication of KR920001983B1 publication Critical patent/KR920001983B1/ko

Links

Classifications

    • 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
    • G11B5/65Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/656Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Co
    • 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
    • G11B5/73Base 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
    • 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
    • G11B5/72Protective coatings, e.g. anti-static or antifriction
    • G11B5/722Protective coatings, e.g. anti-static or antifriction containing an anticorrosive material
    • 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
    • G11B5/72Protective coatings, e.g. anti-static or antifriction
    • G11B5/727Inorganic carbon protective coating, e.g. graphite, diamond like carbon or doped carbon
    • 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
    • G11B5/73Base 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
    • G11B5/7368Non-polymeric layer under the lowermost magnetic recording layer
    • G11B5/7373Non-magnetic single underlayer comprising chromium
    • 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
    • G11B5/73Base 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
    • G11B5/739Magnetic recording media substrates
    • G11B5/73911Inorganic substrates
    • 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
    • G11B5/73Base 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
    • G11B5/739Magnetic recording media substrates
    • G11B5/73911Inorganic substrates
    • G11B5/73913Composites or coated substrates
    • 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
    • G11B5/73Base 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
    • G11B5/739Magnetic recording media substrates
    • G11B5/73911Inorganic substrates
    • G11B5/73917Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919Aluminium or titanium elemental or alloy substrates
    • 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
    • G11B5/73Base 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
    • G11B5/739Magnetic recording media substrates
    • G11B5/73911Inorganic substrates
    • G11B5/73921Glass or ceramic substrates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00Thin magnetic films, e.g. of one-domain structure
    • H01F10/08Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H01F10/16Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys containing cobalt
    • 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
    • Y10T428/12465All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
    • 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.]
    • Y10T428/12535Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12542More than one such 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.]
    • Y10T428/12535Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12576Boride, carbide or nitride 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.]
    • Y10T428/12535Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12611Oxide-containing 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.]
    • Y10T428/12771Transition metal-base component
    • Y10T428/12806Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826Group VIB metal-base component
    • Y10T428/12847Cr-base component
    • Y10T428/12854Next to Co-, Fe-, or Ni-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.]
    • Y10T428/12771Transition metal-base component
    • Y10T428/12861Group VIII or IB metal-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.]
    • Y10T428/12771Transition metal-base component
    • Y10T428/12861Group VIII or IB metal-base component
    • Y10T428/12944Ni-base component

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Power Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
KR1019890003513A 1988-03-22 1989-03-21 고밀도 종방향 자기 기록용 박막 매체 KR920001983B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US171587 1988-03-22
US07/171,587 US4929514A (en) 1988-03-22 1988-03-22 Thin film media for high density longitudinal magnetic recording

Publications (2)

Publication Number Publication Date
KR890015208A true KR890015208A (ko) 1989-10-28
KR920001983B1 KR920001983B1 (ko) 1992-03-07

Family

ID=22624339

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890003513A KR920001983B1 (ko) 1988-03-22 1989-03-21 고밀도 종방향 자기 기록용 박막 매체

Country Status (5)

Country Link
US (1) US4929514A (ko)
EP (1) EP0334488A3 (ko)
JP (1) JPH01283803A (ko)
KR (1) KR920001983B1 (ko)
CA (1) CA1312139C (ko)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143794A (en) * 1988-08-10 1992-09-01 Hitachi, Ltd. Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatus
US5254182A (en) * 1988-10-17 1993-10-19 Mitsui Petrochemical Industries, Ltd. Thin film of amorphous alloy
JP2513893B2 (ja) * 1989-04-26 1996-07-03 日立金属株式会社 磁気記録媒体
JP2697227B2 (ja) * 1989-10-20 1998-01-14 富士電機株式会社 磁気記録媒体およびその製造方法
DE69007261D1 (de) * 1989-12-27 1994-04-14 Mitsubishi Chem Ind Langgestreckter magnetischer Aufzeichnungsträger.
US5004652A (en) * 1990-08-15 1991-04-02 Hmt Technology Corporation High-coercivity thin-film recording medium and method
JPH07118417B2 (ja) * 1990-12-21 1995-12-18 インターナショナル・ビジネス・マシーンズ・コーポレイション 磁気記録媒体
JPH04356721A (ja) * 1991-03-28 1992-12-10 Fuji Photo Film Co Ltd 磁気記録媒体
US5114798A (en) * 1991-06-19 1992-05-19 Aluminum Company Of America Memory disc lubricated by N-acyl sarcosine derivative
US5324593A (en) * 1992-02-18 1994-06-28 Hmt Technology Corporation Thin film medium with layered film gradient
US5230818A (en) * 1991-12-20 1993-07-27 Eastman Kodak Company Coating compositions for master media for anhysteretic recording
JPH06151171A (ja) * 1992-11-02 1994-05-31 Matsushita Electric Ind Co Ltd 軟磁性薄膜体とその製造方法およびそれを用いた磁気ヘッド
US5643670A (en) * 1993-07-29 1997-07-01 The Research Foundation Of State University Of New York At Buffalo Particulate carbon complex
US5567512A (en) * 1993-10-08 1996-10-22 Hmt Technology Corporation Thin carbon overcoat and method of its making
US5681635A (en) * 1994-01-20 1997-10-28 Tulip Memory Systems, Inc. Magnetic recording medium having a ceramic substrate, an underlayer having a dense fibrous zone T structure, and a magnetic layer
US5942341A (en) * 1995-10-15 1999-08-24 Nec Corporation Magnetoresistive element
JPH10228621A (ja) * 1997-02-17 1998-08-25 Fujitsu Ltd 磁気記録媒体及び磁気ディスク装置
US6146737A (en) * 1998-09-18 2000-11-14 Hmt Technology Corporation Magnetic recording medium having a nitrogen-containing barrier layer
US6849326B1 (en) 2000-10-10 2005-02-01 Seagate Technology Llc Niobium alloy seedlayer for magnetic recording media
US6808783B1 (en) 2002-01-17 2004-10-26 Maxtor Corporation Storage media with non-uniform properties
US6787251B1 (en) 2002-04-19 2004-09-07 Seagate Technology Llc Recording medium with a varying composition underlayer
US7214436B2 (en) * 2002-05-28 2007-05-08 Sony Corporation Magnetic recording medium and process for producing same
US7592079B1 (en) 2003-07-03 2009-09-22 Seagate Technology Llc Method to improve remanence-squareness-thickness-product and coercivity profiles in magnetic media

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5988806A (ja) * 1982-11-12 1984-05-22 Nec Corp 磁気記憶体
US4610911A (en) * 1983-11-03 1986-09-09 Hewlett-Packard Company Thin film magnetic recording media
DE3546325C2 (de) * 1985-01-17 1994-06-01 Hitachi Metals Ltd Magnetisches Aufzeichnungsmedium
US4652499A (en) * 1986-04-29 1987-03-24 International Business Machines Magnetic recording medium with a chromium alloy underlayer and a cobalt-based magnetic layer
US4654276A (en) * 1986-04-29 1987-03-31 International Business Machines Corporation Magnetic recording medium with an underlayer and a cobalt-based magnetic layer
US4789598A (en) * 1987-01-20 1988-12-06 International Business Machines Corporation Thin film medium for horizontal magnetic recording having an improved cobalt-based alloy magnetic layer

Also Published As

Publication number Publication date
EP0334488A3 (en) 1990-10-31
EP0334488A2 (en) 1989-09-27
CA1312139C (en) 1992-12-29
JPH01283803A (ja) 1989-11-15
US4929514A (en) 1990-05-29
KR920001983B1 (ko) 1992-03-07

Similar Documents

Publication Publication Date Title
KR890015208A (ko) 고밀도 종방향 자기 기록용 박막 매체
DE3476596D1 (en) Thin film magnetic recording media
DE3380677D1 (en) Magnetic recording and reproducing thin film head
KR900010750A (ko) 기록매체수납장치의 오기록방지장치
DE69213636D1 (de) Magnetaufzeichnungsträger
KR850007505A (ko) 자기 기록 매체
KR900016954A (ko) 자기 기록 매체
KR860002007U (ko) 기록 매체 수용 카세트
DE69211945T2 (de) Magnetisches Aufzeichnungsmedium
DE69222823D1 (de) Magnetisches Aufzeichnungsmedium
DE3856472D1 (de) Datenaufzeichnungsträger
DE69223181D1 (de) Kombinierter Aufzeichnungs-/Wiedergabedünnfilmmagnetkopf
FR2538593B1 (fr) Support d'enregistrement magnetique
DE68925393D1 (de) Magneto-optisches Aufzeichnungsmedium
DE69418071T2 (de) Magnetischer Aufzeichnungsträger mit hoher Dichte
EP0283273A3 (en) Film for high density magnetic recording medium
DE69118669D1 (de) Magnetischer Aufzeichnungsträger hoher Dichte
JPS57126107A (en) Thin film magnetic recording medium
DE69313904D1 (de) Magnetisches Aufzeichnungsmedium
DE69117463T2 (de) Magnetisches Aufzeichnungsmedium
DE58909705D1 (de) Magnetische Aufzeichnungsträger
KR880700996A (ko) 자기 기록 매체
DE69024137T2 (de) Magnetisches Aufzeichnungsmedium
KR900010661A (ko) 자기 기록 매체
KR900010658A (ko) 자기 기록 매체

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19960229

Year of fee payment: 5

LAPS Lapse due to unpaid annual fee