SG90729A1 - Magnetic media with ferromagnetic overly materials for improved thermal stability - Google Patents

Magnetic media with ferromagnetic overly materials for improved thermal stability

Info

Publication number
SG90729A1
SG90729A1 SG200002906A SG200002906A SG90729A1 SG 90729 A1 SG90729 A1 SG 90729A1 SG 200002906 A SG200002906 A SG 200002906A SG 200002906 A SG200002906 A SG 200002906A SG 90729 A1 SG90729 A1 SG 90729A1
Authority
SG
Singapore
Prior art keywords
overly
ferromagnetic
materials
thermal stability
magnetic media
Prior art date
Application number
SG200002906A
Other languages
English (en)
Inventor
Edward Fullerton Eric
Thomas Margulies David
Esteban Marinero Ernesto
Ernst Schabes Manfred
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of SG90729A1 publication Critical patent/SG90729A1/en

Links

Classifications

    • 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
    • G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/743—Patterned record carriers, wherein the magnetic recording layer is patterned into magnetic isolated data islands, e.g. discrete tracks
    • G11B5/746—Bit Patterned record carriers, wherein each magnetic isolated data island corresponds to a bit
    • 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
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
SG200002906A 1999-06-02 2000-05-29 Magnetic media with ferromagnetic overly materials for improved thermal stability SG90729A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/324,606 US6440589B1 (en) 1999-06-02 1999-06-02 Magnetic media with ferromagnetic overlay materials for improved thermal stability

Publications (1)

Publication Number Publication Date
SG90729A1 true SG90729A1 (en) 2002-08-20

Family

ID=23264326

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200002906A SG90729A1 (en) 1999-06-02 2000-05-29 Magnetic media with ferromagnetic overly materials for improved thermal stability

Country Status (8)

Country Link
US (1) US6440589B1 (ko)
JP (1) JP2001023144A (ko)
KR (1) KR100377453B1 (ko)
CN (1) CN1211784C (ko)
DE (1) DE10026050A1 (ko)
MY (1) MY127996A (ko)
SG (1) SG90729A1 (ko)
TW (1) TW514888B (ko)

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KR100374792B1 (ko) * 2000-12-29 2003-03-04 삼성전자주식회사 수직 자기 기록 디스크
JP3993786B2 (ja) * 2001-06-29 2007-10-17 富士通株式会社 磁気記録媒体
US7128987B2 (en) * 2002-06-21 2006-10-31 Seagate Technology Llc Multilayer magnetic recording media including composite layer with discontinuous magnetic phase and continuous non-magnetic phase
AU2003264803A1 (en) * 2002-11-04 2004-06-07 Koninklijke Philips Electronics N.V. Storage system using superparamagnetic particles
US7314675B1 (en) * 2003-01-30 2008-01-01 Seagate Technology Llc Magnetic media with high Ms magnetic layer
US20040166371A1 (en) * 2003-02-26 2004-08-26 Berger Andreas Klaus Dieter Magnetic recording media with write-assist layer
JP3730627B2 (ja) * 2003-02-28 2006-01-05 株式会社東芝 磁気記録媒体及び磁気記録再生装置
WO2005034097A1 (ja) * 2003-09-30 2005-04-14 Fujitsu Limited 垂直磁気記録媒体，その製造方法、記録方法及び再生方法
US7158346B2 (en) * 2003-12-23 2007-01-02 Seagate Technology Llc Heat assisted magnetic recording film including superparamagnetic nanoparticles dispersed in an antiferromagnetic or ferrimagnetic matrix
US20050249981A1 (en) * 2004-05-10 2005-11-10 Heraeus, Inc. Grain structure for magnetic recording media
US20050274221A1 (en) * 2004-06-15 2005-12-15 Heraeus, Inc. Enhanced sputter target alloy compositions
US20050277002A1 (en) * 2004-06-15 2005-12-15 Heraeus, Inc. Enhanced sputter target alloy compositions
JP3796255B2 (ja) * 2004-07-12 2006-07-12 Ｔｄｋ株式会社 磁気記録再生装置
US7136252B2 (en) * 2004-07-14 2006-11-14 Tdk Corporation Magnetic recording and reproducing apparatus with recording layer having predetermined convex-concave pattern
JP2006031789A (ja) * 2004-07-14 2006-02-02 Tdk Corp 磁気記録再生装置
US20060078457A1 (en) * 2004-10-12 2006-04-13 Heraeus, Inc. Low oxygen content alloy compositions
US7425377B2 (en) * 2005-02-04 2008-09-16 Hitachi Global Storage Technologies Netherlands B.V. Incoherently-reversing magnetic laminate with exchange coupled ferromagnetic layers
JP2006331578A (ja) * 2005-05-27 2006-12-07 Toshiba Corp 磁気記録媒体、その製造方法および磁気記録装置
US20060286414A1 (en) * 2005-06-15 2006-12-21 Heraeus, Inc. Enhanced oxide-containing sputter target alloy compositions
US7736766B2 (en) * 2006-02-24 2010-06-15 Seagate Technology Llc Magnetic storage media with Ag, Au-containing magnetic layers
JP4922648B2 (ja) 2006-03-31 2012-04-25 昭和電工株式会社 垂直磁気記録媒体、その製造方法、および磁気記憶装置
US20070253103A1 (en) * 2006-04-27 2007-11-01 Heraeus, Inc. Soft magnetic underlayer in magnetic media and soft magnetic alloy based sputter target
KR100811705B1 (ko) * 2006-07-26 2008-03-11 후지쯔 가부시끼가이샤 수직 자기 기록 매체 및 자기 기억 장치
KR100811704B1 (ko) * 2006-07-26 2008-03-11 후지쯔 가부시끼가이샤 수직 자기 기록 매체, 기록 방법, 재생 방법 및 자기 기억장치
US7704614B2 (en) * 2006-10-20 2010-04-27 Seagate Technology Llc Process for fabricating patterned magnetic recording media
US20080138662A1 (en) * 2006-12-07 2008-06-12 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording medium with multilayer recording structure including intergranular exchange enhancement layer
JP5103097B2 (ja) * 2007-08-30 2012-12-19 エイチジーエスティーネザーランドビーブイ 垂直磁気記録媒体及びそれを用いた磁気記録再生装置
US20090080110A1 (en) * 2007-09-24 2009-03-26 Andreas Berger Perpendicular recording magnetic media with imbalanced magnetic moment multilayer cap structure
US7867406B2 (en) * 2007-12-26 2011-01-11 Hitachi Global Storage Technologies Netherlands, B.V. Patterned magnetic media having an exchange bridge structure connecting islands
US8259410B1 (en) 2008-05-23 2012-09-04 Western Digital (Fremont), Llc Method and system for providing a magnetic head using a composite magnetic material in the recording transducer
JP5616145B2 (ja) * 2010-06-30 2014-10-29 京セラクリスタルデバイス株式会社 磁気ディスク用基板の製造方法
US9058831B2 (en) 2011-12-14 2015-06-16 HGST Netherlands B.V. Perpendicular magnetic recording medium with grain boundary controlling layers
TWI702294B (zh) * 2018-07-31 2020-08-21 日商田中貴金屬工業股份有限公司 磁氣記錄媒體用濺鍍靶

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794047A (en) * 1986-07-21 1988-12-27 Hitachi, Ltd. Method of manufacturing magnetic recording medium
US5057380A (en) * 1987-06-30 1991-10-15 Sony Corporation Soft magnetic thin films of alloys of feconi or fecody and laminates comprising alternate layers of face centered cubic and body centered cubic crystal structure
US5432012A (en) * 1992-06-30 1995-07-11 Hmt Technology Corporation Thin-film medium with compositional gradient

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05144105A (ja) * 1991-11-25 1993-06-11 Sanyo Electric Co Ltd 光磁気記録媒体
US5658659A (en) * 1994-01-28 1997-08-19 Komag, Inc. Magnetic alloy and method for manufacturing same
US5763071A (en) * 1996-03-11 1998-06-09 Seagate Technology, Inc. High areal density magnetic recording medium with dual magnetic layers
US5840394A (en) * 1997-04-02 1998-11-24 Komag, Incorporated Method of manufacturing a thin film magnetic recording medium having low MrT value and high coercivity
JPH11238221A (ja) * 1998-02-20 1999-08-31 Fujitsu Ltd 磁気記録媒体及び磁気ディスク装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794047A (en) * 1986-07-21 1988-12-27 Hitachi, Ltd. Method of manufacturing magnetic recording medium
US5057380A (en) * 1987-06-30 1991-10-15 Sony Corporation Soft magnetic thin films of alloys of feconi or fecody and laminates comprising alternate layers of face centered cubic and body centered cubic crystal structure
US5432012A (en) * 1992-06-30 1995-07-11 Hmt Technology Corporation Thin-film medium with compositional gradient

Also Published As

Publication number Publication date
JP2001023144A (ja) 2001-01-26
MY127996A (en) 2007-01-31
DE10026050A8 (de) 2004-09-02
KR100377453B1 (ko) 2003-03-26
US6440589B1 (en) 2002-08-27
CN1276595A (zh) 2000-12-13
KR20010020939A (ko) 2001-03-15
DE10026050A1 (de) 2000-12-28
TW514888B (en) 2002-12-21
CN1211784C (zh) 2005-07-20

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