SG99907A1 - Thin film inductive read write heads having narrow write track width and methods for their production and use - Google Patents

Thin film inductive read write heads having narrow write track width and methods for their production and use

Info

Publication number
SG99907A1
SG99907A1 SG200103941A SG200103941A SG99907A1 SG 99907 A1 SG99907 A1 SG 99907A1 SG 200103941 A SG200103941 A SG 200103941A SG 200103941 A SG200103941 A SG 200103941A SG 99907 A1 SG99907 A1 SG 99907A1
Authority
SG
Singapore
Prior art keywords
production
methods
thin film
track width
narrow
Prior art date
Application number
SG200103941A
Other languages
English (en)
Inventor
Jerry Lo Jyh-Shuey
I Kim John
J Moran Timothy
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 SG99907A1 publication Critical patent/SG99907A1/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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
    • Y10T29/49043—Depositing magnetic layer or coating
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
    • Y10T29/49043—Depositing magnetic layer or coating
    • Y10T29/49044—Plural magnetic deposition layers
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
    • Y10T29/49043—Depositing magnetic layer or coating
    • Y10T29/49046—Depositing magnetic layer or coating with etching or machining of magnetic material
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
    • Y10T29/49052—Machining magnetic material [e.g., grinding, etching, polishing] by etching

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
SG200103941A 2000-07-14 2001-06-28 Thin film inductive read write heads having narrow write track width and methods for their production and use SG99907A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/616,838 US6539610B1 (en) 2000-07-14 2000-07-14 Method for manufacturing a magnetic write head

Publications (1)

Publication Number Publication Date
SG99907A1 true SG99907A1 (en) 2003-11-27

Family

ID=24471142

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200103941A SG99907A1 (en) 2000-07-14 2001-06-28 Thin film inductive read write heads having narrow write track width and methods for their production and use

Country Status (3)

Country Link
US (1) US6539610B1 (ko)
KR (1) KR20020007157A (ko)
SG (1) SG99907A1 (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4176322B2 (ja) * 2001-03-26 2008-11-05 Ｔｄｋ株式会社 薄膜形成方法、及び薄膜磁気ヘッドの製造方法
US6947255B2 (en) * 2002-03-22 2005-09-20 International Business Machines Corporation Magnetic head having a notched pole piece structure and method of making the same
US7265941B2 (en) * 2004-02-27 2007-09-04 Hitachi Global Storage Technologies Netherlands B.V. Self-aligned, notched trailing shield for perpendicular recording
US7480983B2 (en) * 2004-05-28 2009-01-27 Hitachi Global Storage Technologies Netherlands B.V. Method for making magnetic write head
US7593186B2 (en) * 2005-01-31 2009-09-22 Hitachi Global Storage Technologies Netherlands B.V. P1 write pole with shoulder formation
US7536774B2 (en) 2006-04-07 2009-05-26 Hitachi Global Storage Technologies B.V. Method and apparatus for integrating a stair notch and a gap bump at a pole tip in a write head
US7675709B2 (en) * 2006-09-21 2010-03-09 Hitachi Global Storage Technologies Netherlands B.V. Magnetic write head having a stair notched, steep shouldered pole and a write gap bump
US8171618B1 (en) 2009-06-17 2012-05-08 Western Digital (Fremont), Llc Tunable pole trim processes for fabricating trapezoidal perpendicular magnetic recording (PMR) write poles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996213A (en) * 1998-01-30 1999-12-07 Read-Rite Corporation Thin film MR head and method of making wherein pole trim takes place at the wafer level
US6034847A (en) * 1996-12-25 2000-03-07 Hitachi, Ltd. Apparatus and thin film magnetic head with magnetic membrane layers of different resistivity
US6064552A (en) * 1997-03-18 2000-05-16 Kabushiki Kaisha Toshiba Magnetoresistive head having magnetic yoke and giant magnetoresistive element such that a first electrode is formed on the giant magnetoresistive element which in turn is formed on the magnetic yoke which acts as a second electrode

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157570A (en) * 1990-06-29 1992-10-20 Digital Equipment Corporation Magnetic pole configuration for high density thin film recording head
US5438747A (en) 1994-03-09 1995-08-08 International Business Machines Corporation Method of making a thin film merged MR head with aligned pole tips
JPH08167131A (ja) * 1994-12-14 1996-06-25 Hitachi Ltd 薄膜磁気ヘッドの浮上面レールの形成方法並びに薄膜磁気ヘッド及び磁気ディスク装置
KR0178238B1 (ko) * 1995-09-30 1999-04-15 배순훈 박막 자기 헤드의 하부 자성층 패턴 형성 방법
KR100249975B1 (ko) * 1996-03-15 2000-03-15 니시무로 타이죠 자기 기록 재생 헤드 및 그 제조 방법
US5726841A (en) 1996-06-11 1998-03-10 Read-Rite Corporation Thin film magnetic head with trimmed pole tips etched by focused ion beam for undershoot reduction
US5874010A (en) 1996-07-17 1999-02-23 Headway Technologies, Inc. Pole trimming technique for high data rate thin film heads
US5804085A (en) 1997-01-30 1998-09-08 Quantum Corporation Process for producing a pole-trimmed writer in a magnetoresistive read/write head and a data transducer made thereby
JPH10228607A (ja) * 1997-02-14 1998-08-25 Fujitsu Ltd 磁気ヘッドとその製造方法及び磁気記憶装置
JPH10255233A (ja) * 1997-03-14 1998-09-25 Toshiba Corp 磁気抵抗効果ヘッドの製造方法
US5916423A (en) 1997-05-06 1999-06-29 International Business Machines Corporation P1 notched write head with minimum overmilled p1 and p2
US6031695A (en) * 1997-09-05 2000-02-29 International Business Machines Corporation Combined read head and write head with non-magnetic electrically conductive layer on upper pole tip thereof
JP3911339B2 (ja) * 1998-03-20 2007-05-09 Ｔｄｋ株式会社 磁気ディスク装置および記録再生方法
JP2000011320A (ja) * 1998-06-23 2000-01-14 Fujitsu Ltd 薄膜磁気ヘッドの製造方法
JP3503874B2 (ja) * 1998-09-29 2004-03-08 Ｔｄｋ株式会社 薄膜磁気ヘッドの製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6034847A (en) * 1996-12-25 2000-03-07 Hitachi, Ltd. Apparatus and thin film magnetic head with magnetic membrane layers of different resistivity
US6064552A (en) * 1997-03-18 2000-05-16 Kabushiki Kaisha Toshiba Magnetoresistive head having magnetic yoke and giant magnetoresistive element such that a first electrode is formed on the giant magnetoresistive element which in turn is formed on the magnetic yoke which acts as a second electrode
US5996213A (en) * 1998-01-30 1999-12-07 Read-Rite Corporation Thin film MR head and method of making wherein pole trim takes place at the wafer level

Also Published As

Publication number Publication date
US6539610B1 (en) 2003-04-01
KR20020007157A (ko) 2002-01-26

Similar Documents

Publication Publication Date Title
DE60129390D1 (de) Informationsaufzeichnungs- und -wiedergabevorrichtung
SG110165A1 (en) Magnetic transducer for perpendicular magnetic recording with separate read and write heads
SG101533A1 (en) Perpendicular magnetic recording medium and magnetic read/write apparatus
HK1051269B (zh) 信息記錄/播放裝置和方法
HUP0202148A2 (en) Information recording/reproducing apparatus and method
SG105007A1 (en) "perpendicular magnetic recording media"
DE60136881D1 (de) Informationsaufzeichnungs- und -wiedergabemedium
GB0030559D0 (en) Self-writing of servo patterns in disk drives
SG91343A1 (en) Perpendicular magnetic recording medium and magnetic recording apparatus
GB0109661D0 (en) Information recording medium and information processing apparatus
HK1053557A1 (en) Information recording/reproducing apparatus and method
SG98072A1 (en) Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the same
AU4065600A (en) High track density magnetic recording head
EP1291869A4 (en) DATA RECORDING MEDIUM AND PLAYING DEVICE DAF R
SG96685A1 (en) Perpendicular magnetic recording medium and magnetic recording-reproducing apparatus using the same
SG114492A1 (en) Perpendicular magnetic recording medium
SG94853A1 (en) Perpendicular magnetic recording medium and a magnetic reproducing apparatus
DE60103715D1 (de) Informationsaufzeichnungs- und wiedergabegerät
SG99907A1 (en) Thin film inductive read write heads having narrow write track width and methods for their production and use
GB2364166B (en) Method and apparatus for thermally writing servo patterns on magnetic media
IL151913A0 (en) Storage medium for thermally-assisted magnetic recording
DE60203656D1 (de) Informationsaufzeichnungs- und wiedergabegerät
SG110082A1 (en) Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus
SG102629A1 (en) Floating-type head slider and recording/reproducing apparatus employing the same
PL337313A1 (en) Reading device in particular for recording media containing information blocks