SG126855A1 - A flux shunt structure for reducing return pole corner fields in a perpendicular magnetic recording head - Google Patents

A flux shunt structure for reducing return pole corner fields in a perpendicular magnetic recording head

Info

Publication number
SG126855A1
SG126855A1 SG200602269A SG200602269A SG126855A1 SG 126855 A1 SG126855 A1 SG 126855A1 SG 200602269 A SG200602269 A SG 200602269A SG 200602269 A SG200602269 A SG 200602269A SG 126855 A1 SG126855 A1 SG 126855A1
Authority
SG
Singapore
Prior art keywords
magnetic
shield
write
pole
return pole
Prior art date
Application number
SG200602269A
Other languages
English (en)
Inventor
Yimin Hsu
Quang Le
Roger William Wood
Original Assignee
Hitachi Global Storage Tech
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 Hitachi Global Storage Tech filed Critical Hitachi Global Storage Tech
Publication of SG126855A1 publication Critical patent/SG126855A1/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
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • 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
    • G11B5/315—Shield layers on both sides of the main pole, e.g. in perpendicular magnetic heads
    • 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
    • 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
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
    • 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)
SG200602269A 2005-04-27 2006-04-05 A flux shunt structure for reducing return pole corner fields in a perpendicular magnetic recording head SG126855A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/116,677 US7639450B2 (en) 2005-04-27 2005-04-27 Flux shunt structure for reducing return pole corner fields in a perpendicular magnetic recording head

Publications (1)

Publication Number Publication Date
SG126855A1 true SG126855A1 (en) 2006-11-29

Family

ID=36575957

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200602269A SG126855A1 (en) 2005-04-27 2006-04-05 A flux shunt structure for reducing return pole corner fields in a perpendicular magnetic recording head

Country Status (7)

Country Link
US (1) US7639450B2 (zh)
EP (1) EP1717797A1 (zh)
JP (1) JP2006309930A (zh)
KR (1) KR20060113431A (zh)
CN (1) CN100495540C (zh)
SG (1) SG126855A1 (zh)
TW (1) TWI417876B (zh)

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US7365942B2 (en) * 2005-06-22 2008-04-29 Headway Technologies, Inc. Thin-film magnetic head
US7573683B1 (en) * 2005-07-08 2009-08-11 Maxtor Corporation Write heads with floating side shields and manufacturing methods
US7898773B2 (en) * 2006-02-02 2011-03-01 Headway Technologies, Inc. Perpendicular magnetic recording head with a side write shield
JP2008276817A (ja) * 2007-04-25 2008-11-13 Tdk Corp 垂直磁気記録ヘッド
JP2008276815A (ja) 2007-04-25 2008-11-13 Tdk Corp 垂直磁気記録ヘッド
JP4349433B2 (ja) 2007-05-11 2009-10-21 セイコーエプソン株式会社 電気光学装置、その駆動回路、駆動方法および電子機器
US7978431B2 (en) * 2007-05-31 2011-07-12 Headway Technologies, Inc. Method to make a perpendicular magnetic recording head with a bottom side shield
JP5056203B2 (ja) * 2007-06-28 2012-10-24 セイコーエプソン株式会社 電気光学装置、その駆動方法および電子機器
US7826162B2 (en) * 2007-10-17 2010-11-02 Samsung Electronics Co., Ltd. Apparatus and method for sensing an external magnetic field to protect a perpendicular magnetic recording (PMR) hard disk drive
US8120874B2 (en) * 2007-12-28 2012-02-21 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular write head having a modified wrap-around shield to improve overwrite, adjacent track interference and magnetic core width dependence on skew angle
US20090262464A1 (en) * 2008-04-21 2009-10-22 Hardayal Singh Gill Perpendicular magnetic write head having a wrap around shield constructed of a low permeability material for reduced adjacent track erasure
US8634161B2 (en) * 2008-12-31 2014-01-21 HGST Netherlands, B.V. Systems having writer with deeper wrap around shield and methods for making the same
US8358486B2 (en) 2009-10-13 2013-01-22 International Business Machines Corporation Magnetically shielded write transducers
US8842389B2 (en) * 2009-10-26 2014-09-23 Headway Technologies, Inc. Wrap-around shielded writer with highly homogeneous shield material
US8347488B2 (en) * 2009-12-09 2013-01-08 Hitachi Global Storage Technologies Netherlands B.V. Magnetic write head manufactured by damascene process producing a tapered write pole with a non-magnetic step and non-magnetic bump
US8201320B2 (en) * 2009-12-17 2012-06-19 Hitachi Global Storage Technologies Netherlands B.V. Method for manufacturing a magnetic write head having a wrap around shield that is magnetically coupled with a leading magnetic shield
US9007718B2 (en) 2010-05-10 2015-04-14 International Business Machines Corporation Write head having a device for reducing the effects of stray flux
US8315013B2 (en) 2010-05-10 2012-11-20 International Business Machines Corporation Magnetic write head with flux diverting structure
US8848316B2 (en) 2010-09-28 2014-09-30 Seagate Technology Llc Perpendicular write head with laminated side shields
US8582237B2 (en) 2011-06-13 2013-11-12 Seagate Technology Llc Selectively magnetic write gap insert
US8848314B2 (en) * 2011-12-07 2014-09-30 HGST Netherlands B.V. Write head designed for adjusting relative write phase between subtracks of a patterned media hypertrack
US8570686B2 (en) 2012-03-13 2013-10-29 HGST Netherlands B.V. Magnetic recording head with non-conformal side shield gap
US9196267B2 (en) 2013-06-28 2015-11-24 Seagate Technology Llc Data writer with flux density insert
US9269378B2 (en) 2013-12-20 2016-02-23 HGST Netherlands B.V. Stray field shielding for perpendicular magnetic recording write head
US8947828B1 (en) * 2014-03-18 2015-02-03 HGST Netherlands B.V. Magnetic head having a double bump wrap around shield
US9286919B1 (en) * 2014-12-17 2016-03-15 Western Digital (Fremont), Llc Magnetic writer having a dual side gap
US9502055B1 (en) 2015-04-30 2016-11-22 Seagate Technology Llc Write pole shield shunt

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US7009812B2 (en) * 2003-09-29 2006-03-07 Hitachi Global Storage Technologies Netherlands B.V. Magnetic transducer for perpendicular magnetic recording with single pole write head with trailing shield
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Also Published As

Publication number Publication date
JP2006309930A (ja) 2006-11-09
TW200639817A (en) 2006-11-16
CN1855229A (zh) 2006-11-01
US20060245108A1 (en) 2006-11-02
EP1717797A1 (en) 2006-11-02
US7639450B2 (en) 2009-12-29
TWI417876B (zh) 2013-12-01
KR20060113431A (ko) 2006-11-02
CN100495540C (zh) 2009-06-03

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