CA2044047A1 - Configuration de pole magnetique pour tete d'enregistrement sur film mince a grande densite d'enregistrement - Google Patents

Configuration de pole magnetique pour tete d'enregistrement sur film mince a grande densite d'enregistrement

Info

Publication number
CA2044047A1
CA2044047A1 CA2044047A CA2044047A CA2044047A1 CA 2044047 A1 CA2044047 A1 CA 2044047A1 CA 2044047 A CA2044047 A CA 2044047A CA 2044047 A CA2044047 A CA 2044047A CA 2044047 A1 CA2044047 A1 CA 2044047A1
Authority
CA
Canada
Prior art keywords
layer
low
layers
magnetic
thin film
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2044047A
Other languages
English (en)
Other versions
CA2044047C (fr
Inventor
Harold B. Shukovsky
Sharat Batra
Michael L. Mallary
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quantum Corp
Original Assignee
Digital Equipment Corp
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 Digital Equipment Corp filed Critical Digital Equipment Corp
Publication of CA2044047A1 publication Critical patent/CA2044047A1/fr
Application granted granted Critical
Publication of CA2044047C publication Critical patent/CA2044047C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
    • G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
    • G11B5/3153—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers including at least one magnetic thin film coupled by interfacing to the basic magnetic thin film structure
    • 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
    • G11B5/3113—Details for improving the magnetic domain structure or avoiding the formation or displacement of undesirable magnetic domains
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)
CA002044047A 1990-06-29 1991-06-06 Configuration de pole magnetique pour tete d'enregistrement sur film mince a grande densite d'enregistrement Expired - Fee Related CA2044047C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/546,280 1990-06-29
US07/546,280 US5157570A (en) 1990-06-29 1990-06-29 Magnetic pole configuration for high density thin film recording head

Publications (2)

Publication Number Publication Date
CA2044047A1 true CA2044047A1 (fr) 1991-12-30
CA2044047C CA2044047C (fr) 1997-06-10

Family

ID=24179688

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002044047A Expired - Fee Related CA2044047C (fr) 1990-06-29 1991-06-06 Configuration de pole magnetique pour tete d'enregistrement sur film mince a grande densite d'enregistrement

Country Status (6)

Country Link
US (2) US5157570A (fr)
EP (1) EP0463753B1 (fr)
JP (1) JPH0668422A (fr)
CA (1) CA2044047C (fr)
DE (1) DE69124850T2 (fr)
SG (1) SG49059A1 (fr)

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2947621B2 (ja) * 1990-12-28 1999-09-13 アルプス電気株式会社 薄膜磁気ヘッド
US5590008A (en) * 1991-04-25 1996-12-31 Hitachi, Ltd. Magnetic disc unit having a plurality of magnetic heads which include multilayer magnetic films
JPH04344311A (ja) * 1991-05-21 1992-11-30 Ngk Insulators Ltd 薄膜磁気回路基板及びそれを用いた磁気ヘッド
JPH0676238A (ja) * 1992-07-08 1994-03-18 Fuji Electric Co Ltd 薄膜磁気ヘッド
JPH06220609A (ja) * 1992-07-31 1994-08-09 Sony Corp 磁気抵抗効果膜及びその製造方法並びにそれを用いた磁気抵抗効果素子、磁気抵抗効果型磁気ヘッド
US5617071A (en) * 1992-11-16 1997-04-01 Nonvolatile Electronics, Incorporated Magnetoresistive structure comprising ferromagnetic thin films and intermediate alloy layer having magnetic concentrator and shielding permeable masses
US5569544A (en) * 1992-11-16 1996-10-29 Nonvolatile Electronics, Incorporated Magnetoresistive structure comprising ferromagnetic thin films and intermediate layers of less than 30 angstroms formed of alloys having immiscible components
JPH08503336A (ja) * 1992-11-16 1996-04-09 ノンボラタイル エレクトロニクス，インコーポレイテッド 合金層を有する磁気抵抗性構造
US6285528B1 (en) * 1993-03-15 2001-09-04 Kabushiki Kaisha Toshiba Thin-film magnetic head
JPH0778309A (ja) * 1993-07-14 1995-03-20 Sony Corp 薄膜磁気ヘッド及び磁気抵抗効果型磁気ヘッド並びに複合型磁気ヘッド
WO1995003604A1 (fr) * 1993-07-23 1995-02-02 Nonvolatile Electronics, Incorporated Structure magnetique avec des couches stratifiees
US5606478A (en) * 1994-12-08 1997-02-25 International Business Machines Corporation Ni45 Fe55 metal-in-gap thin film magnetic head
US5578342A (en) * 1995-07-05 1996-11-26 Read-Rite Corporation Alignment of magnetic poles of thin film transducer
US5751528A (en) * 1996-04-15 1998-05-12 Read-Rite Corporation Multilayer exchange coupled magnetic poles with approximate zero magnetostriction
US5916424A (en) * 1996-04-19 1999-06-29 Micrion Corporation Thin film magnetic recording heads and systems and methods for manufacturing the same
US5752309A (en) * 1996-06-14 1998-05-19 Quantum Corporation Method and apparatus for precisely dimensioning pole tips of a magnetic transducing head structure
US5874010A (en) * 1996-07-17 1999-02-23 Headway Technologies, Inc. Pole trimming technique for high data rate thin film heads
US5864450A (en) * 1996-10-09 1999-01-26 International Business Machines Corporation NI45FE55 metal-in-gap thin film magnetic head
US6038110A (en) * 1996-12-06 2000-03-14 International Business Machines Corporation Dual header tape head design
JPH10334409A (ja) * 1997-05-27 1998-12-18 Tdk Corp 薄膜磁気ヘッド
US6332962B1 (en) 1997-06-13 2001-12-25 Micrion Corporation Thin-film magnetic recording head manufacture using selective imaging
JP3305244B2 (ja) 1997-12-10 2002-07-22 アルプス電気株式会社 薄膜磁気ヘッドおよびその製造方法
US6137660A (en) * 1997-12-29 2000-10-24 Matsushita-Kotobuki Electronics Method for reducing ESD and imaging damage during focused ion beam definition of magnetoresistive head write track width
JP2003524849A (ja) 1998-03-26 2003-08-19 ディジタル・オプティックス・コーポレイション 集積されたマイクロ光学システム
US20080128844A1 (en) * 2002-11-18 2008-06-05 Tessera North America Integrated micro-optical systems and cameras including the same
US6426829B1 (en) * 1998-03-26 2002-07-30 Digital Optics Corp. Integrated micro-optical systems
US6259583B1 (en) 1998-09-16 2001-07-10 International Business Machines, Corporation Laminated yoke head with a domain control element
JP2000113437A (ja) * 1998-10-08 2000-04-21 Read Rite Smi Kk 磁気ヘッド装置の製造方法、磁気ヘッド装置、並びに、磁気ヘッド装置の中間製造物
US6197439B1 (en) 1999-01-28 2001-03-06 International Business Machines Corporation Laminated magnetic structures with ultra-thin transition metal spacer layers
US6477765B1 (en) * 1999-11-04 2002-11-12 Storage Technology Corporation Method of fabricating a magnetic write transducer
US6473960B1 (en) 2000-01-07 2002-11-05 Storage Technology Corporation Method of making nitrided active elements
US6539610B1 (en) * 2000-07-14 2003-04-01 International Business Machines Corporation Method for manufacturing a magnetic write head
US6346183B1 (en) * 2000-08-03 2002-02-12 International Business Machines Corporation Use of thin carbon films as a bottom anti-reflective coating in manufacturing magnetic heads
JP2002094144A (ja) * 2000-09-12 2002-03-29 Fujitsu Ltd 磁気抵抗効果素子およびその製造方法
US6621660B2 (en) * 2001-01-16 2003-09-16 International Business Machines Corporation Thin film magnetic head
US6721131B2 (en) * 2001-03-15 2004-04-13 Seagate Technology Llc Composite write pole for a magnetic recording head
US6693769B2 (en) * 2001-06-18 2004-02-17 Hitachi Global Storage Technologies Netherlands B.V. High data rate write head
US7333294B1 (en) * 2001-12-18 2008-02-19 Seagate Technology Llc Perpendicular writer with reduced side track writing
JP4519393B2 (ja) * 2002-04-10 2010-08-04 新科實業有限公司 垂直磁気記録ヘッドおよびその製造方法、ならびに磁気記録装置
US6813115B2 (en) * 2002-04-18 2004-11-02 Seagate Technology Llc Perpendicular magnetic recording head with improved write field gradient
US7097923B2 (en) * 2002-04-30 2006-08-29 Hitachi Global Storage Technologies Method for forming thin film heads using a tri-layer anti-reflection coating for photolithographic applications and a structure thereof
US6791796B2 (en) * 2002-05-28 2004-09-14 Seagate Technology Llc Perpendicular writer with laminated main pole
US7099121B2 (en) * 2002-06-06 2006-08-29 Seagate Technology Llc Perpendicular magnetic recording head having a reduced field under the return pole and minimal eddy current losses
US6876526B2 (en) * 2002-06-12 2005-04-05 Seagate Technology Llc Bilayer shared pole extension for reduced thermal pole tip protrusion
US8059345B2 (en) * 2002-07-29 2011-11-15 Digitaloptics Corporation East Integrated micro-optical systems
US7038882B2 (en) * 2002-10-03 2006-05-02 Seagate Technology Low moment-high moment write pole with non-magnetic layer for establishing a magnetic path discontinuity between layers of the write pole
US6909579B2 (en) * 2002-10-08 2005-06-21 Hitachi Global Storage Technologies Netherlands B.V. Magnetic head with a vertically laminated back gap structure having magnetic layer thicknesses less than the skin depth
US7554765B2 (en) * 2003-06-11 2009-06-30 Seagate Technology Llc Magnetic head for perpendicular recording with suppressed side writing and erasing
US7684150B2 (en) * 2003-07-09 2010-03-23 Seagate Technology Llc Recording head for reducing side track erasure
US7102854B2 (en) * 2003-10-03 2006-09-05 Seagate Technology Llc Transducing head with reduced side writing
US8177955B2 (en) * 2004-06-03 2012-05-15 Headway Technologies, Inc. Electrodeposition of FeCoNiV films with high resistivity and high saturation magnetization for magnetic head fabrication
US7263762B2 (en) * 2004-09-30 2007-09-04 Hitachi Global Storage Technologies Method for reducing pole height loss in the formation of a write pole for a magnetic write head
US7369360B2 (en) * 2004-11-05 2008-05-06 Seagate Technology Llc Perpendicular recording head having controlled permeability and saturation moment
US7382574B2 (en) * 2004-12-06 2008-06-03 Seagate Technology Llc Layered perpendicular writer with pole tip partially embedded in yoke
US7500302B2 (en) * 2005-04-11 2009-03-10 Hitachi Global Storage Technologies, Netherlands B.V. Process for fabricating a magnetic recording head with a laminated write gap
US7525760B2 (en) * 2005-04-11 2009-04-28 Hitachi Global Storage Technologies B.V. Laminated write gap to improve writer performance
US20070047140A1 (en) * 2005-08-29 2007-03-01 Tabakovic Ibro M Electroplated multiple layer soft magnetic materials with high magnetic moment
US7561379B2 (en) * 2005-10-28 2009-07-14 Seagate Technology Llc Laminated return pole for suppressing side track erasure
US8228633B1 (en) 2008-08-21 2012-07-24 Western Digital (Fremont), Llc Method and system for providing a magnetic recording transducer having a hybrid moment pole
US8329320B2 (en) * 2008-11-13 2012-12-11 Headway Technologies, Inc. Laminated high moment film for head applications
US9135930B1 (en) 2014-03-06 2015-09-15 Western Digital (Fremont), Llc Method for fabricating a magnetic write pole using vacuum deposition
US9934811B1 (en) 2014-03-07 2018-04-03 Western Digital (Fremont), Llc Methods for controlling stray fields of magnetic features using magneto-elastic anisotropy

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961299A (en) * 1969-10-28 1976-06-01 Commissariat A L'energie Atomique Magnetic circuit having low reluctance
US3639699A (en) * 1970-02-27 1972-02-01 Gen Electric Magnetic transducer having a composite magnetic core structure
JPS5724015A (en) * 1980-07-17 1982-02-08 Mitsubishi Electric Corp Thin film magnetic head
US4436593A (en) * 1981-07-13 1984-03-13 Memorex Corporation Self-aligned pole tips
JPS5823316A (ja) * 1981-08-04 1983-02-12 Matsushita Electric Ind Co Ltd 薄膜磁気ヘツドの製造方法
JPH061729B2 (ja) * 1983-01-17 1994-01-05 株式会社日立製作所 磁性体膜およびそれを用いた磁気ヘッド
JPH0622170B2 (ja) * 1983-12-16 1994-03-23 株式会社日立製作所 磁気ヘッド
JPS60202502A (ja) * 1984-03-28 1985-10-14 Canon Electronics Inc 磁気ヘツド
JPS6176642A (ja) * 1984-09-25 1986-04-19 Hitachi Ltd Ｃｏ―Ｎｉ―Ｆｅ合金の電気めっき浴及び電気めっき方法
US4789914A (en) * 1986-10-28 1988-12-06 International Business Machines Corporation Thin film magnetic read-write head/arm assemblies
US4805055A (en) * 1986-11-24 1989-02-14 Maxtor Winchester disc drive actuator structure
JPS63259879A (ja) * 1987-04-16 1988-10-26 Mitsubishi Electric Corp 浮動形磁気ヘツド
US4944805A (en) * 1987-09-10 1990-07-31 Fuji Photo Film Co., Ltd. Method of heat treatment amorphous soft magnetic film layers to reduce magnetic anisotropy
US4780779A (en) * 1987-11-19 1988-10-25 Ampex Corporation Laminated sendust metal-in-gap video head
JPH07114007B2 (ja) * 1987-12-04 1995-12-06 ディジタル イクイプメント コーポレーション 記録ヘッドの積層構造磁極
US5073242A (en) * 1989-11-27 1991-12-17 Censtor Corp. Method of making integrated magnetic read/write head/flexure/conductor structure
US5087332A (en) * 1991-08-05 1992-02-11 Read-Rite Corp. Process for making a thin film magnetic head with single step lift-off

Also Published As

Publication number Publication date
US5157570A (en) 1992-10-20
EP0463753A1 (fr) 1992-01-02
SG49059A1 (en) 1998-05-18
EP0463753B1 (fr) 1997-03-05
CA2044047C (fr) 1997-06-10
JPH0668422A (ja) 1994-03-11
DE69124850T2 (de) 1997-09-04
DE69124850D1 (de) 1997-04-10
US5314596A (en) 1994-05-24

Similar Documents

Publication Publication Date Title
CA2044047A1 (fr) Configuration de pole magnetique pour tete d'enregistrement sur film mince a grande densite d'enregistrement
MY127996A (en) Magnetic media with ferromagnetic overlay materials for improved thermal stability
GB2325777B (en) High areal density magnetic recording medium with dual magnetic layers
MY114962A (en) Magnetic tunnel junction magnetoresistive read head with sensing layer as flux guide
EP0911810A3 (fr) Dispositifs à jonction tunnel magnétique
KR890008761A (ko) 자기광 기록매체의 신호 재생 방법
EP0794581A4 (fr) Transducteur magnetique
MY120928A (en) Magnetoresistance effect element
US4441131A (en) Magnetic head
US4639810A (en) Magnetic head for perpendicular magnetization
EP0940803A3 (fr) Méthode d'enregistrement/reproduction magnétique
JPS56124112A (en) Magnetic head
EP0965987A3 (fr) Support d' enregistrement magnétooptique
US4635152A (en) Magnetic resonance-type playback apparatus including a magnetic material having magnetic anisotropy
US3863268A (en) Magnetic head
JP2814741B2 (ja) 垂直磁化型磁気抵抗素子とそれを用いた磁気抵抗効果型磁気ヘッド
KR940007781A (ko) 박막자기헤드
KR930016787A (ko) 자기저항 효과센서
JPH05175572A (ja) 磁気抵抗効果素子とそれを用いた磁気ヘッドおよび記録再生装置
EP0923073A3 (fr) Milieu d'enregistrement magnéto-optique simplifiant le transfert d'un domaine magnétique
JPS6050607A (ja) 垂直磁気記録再生ヘツド
JPS60157712A (ja) 磁気抵抗効果型磁気ヘツド
JPS5634108A (en) Magnetic recording and reproducing apparatus
JPS6464108A (en) Magnetic head
JPS56148719A (en) Production of magnetic head

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed