WO2008146357A1 - Thin film magnetic head and magnetic recorder - Google Patents

Thin film magnetic head and magnetic recorder Download PDF

Info

Publication number
WO2008146357A1
WO2008146357A1 PCT/JP2007/060840 JP2007060840W WO2008146357A1 WO 2008146357 A1 WO2008146357 A1 WO 2008146357A1 JP 2007060840 W JP2007060840 W JP 2007060840W WO 2008146357 A1 WO2008146357 A1 WO 2008146357A1
Authority
WO
WIPO (PCT)
Prior art keywords
shield layer
magnetic shield
thin film
upper magnetic
magnetic head
Prior art date
Application number
PCT/JP2007/060840
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroyuki Kawata
Masamitsu Kitajima
Toshinori Hoshino
Hiroyuki Yamada
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/060840 priority Critical patent/WO2008146357A1/en
Publication of WO2008146357A1 publication Critical patent/WO2008146357A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • 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
    • G11B5/3903—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 using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3929—Disposition of magnetic thin films not used for directly coupling magnetic flux from the track to the MR film or for shielding
    • 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
    • G11B5/3903—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 using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/398—Specially shaped layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Magnetic Heads (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)

Abstract

A thin film magnetic head has a magnetoresistive element, and an upper magnetic shield layer and a lower magnetic shield layer which are arranged respectively on the upper and lower sides of the magnetoresistive element so as to sandwich the magnetoresistive element . The magnetoresistive element, the upper magnetic shield layer and the lower magnetic shield layer are electrically connected to one another. In the thin film magnetic head, an electrode terminal layer connected to the upper magnetic shield layer and that electrically connected to the lower magnetic shield layer are not included in an area regulating a shield shape. In the thin film magnetic head, the upper magnetic shield layer is composed of a first upper magnetic shield layer and a second upper magnetic shield layer which have no level difference respectively. The first upper magnetic shield layer and the second upper magnetic shield layer respectively have nearly constant thicknesses. Also disclosed is a magnetic recorder on which such a thin film magnetic head is located.
PCT/JP2007/060840 2007-05-28 2007-05-28 Thin film magnetic head and magnetic recorder WO2008146357A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/060840 WO2008146357A1 (en) 2007-05-28 2007-05-28 Thin film magnetic head and magnetic recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/060840 WO2008146357A1 (en) 2007-05-28 2007-05-28 Thin film magnetic head and magnetic recorder

Publications (1)

Publication Number Publication Date
WO2008146357A1 true WO2008146357A1 (en) 2008-12-04

Family

ID=40074642

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/060840 WO2008146357A1 (en) 2007-05-28 2007-05-28 Thin film magnetic head and magnetic recorder

Country Status (1)

Country Link
WO (1) WO2008146357A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015032344A (en) * 2013-08-06 2015-02-16 シーゲイト テクノロジー エルエルシー Data reader with horizontal lamination shield, and method of manufacturing the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09326104A (en) * 1996-04-01 1997-12-16 Tdk Corp Magnetic head
JP2005018903A (en) * 2003-06-26 2005-01-20 Hitachi Ltd Magnetic head and magnetic recording and reproducing device
JP2006209879A (en) * 2005-01-28 2006-08-10 Tdk Corp Thin film magnetic head, its manufacturing method, head gimbal assembly, and hard disk drive

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09326104A (en) * 1996-04-01 1997-12-16 Tdk Corp Magnetic head
JP2005018903A (en) * 2003-06-26 2005-01-20 Hitachi Ltd Magnetic head and magnetic recording and reproducing device
JP2006209879A (en) * 2005-01-28 2006-08-10 Tdk Corp Thin film magnetic head, its manufacturing method, head gimbal assembly, and hard disk drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015032344A (en) * 2013-08-06 2015-02-16 シーゲイト テクノロジー エルエルシー Data reader with horizontal lamination shield, and method of manufacturing the same

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