GB2392299B - Perpendicular magnetic recording head with soft underlayer biasing - Google Patents

Perpendicular magnetic recording head with soft underlayer biasing

Info

Publication number
GB2392299B
GB2392299B GB0324786A GB0324786A GB2392299B GB 2392299 B GB2392299 B GB 2392299B GB 0324786 A GB0324786 A GB 0324786A GB 0324786 A GB0324786 A GB 0324786A GB 2392299 B GB2392299 B GB 2392299B
Authority
GB
United Kingdom
Prior art keywords
biasing
recording head
magnetic recording
perpendicular magnetic
soft underlayer
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.)
Expired - Fee Related
Application number
GB0324786A
Other versions
GB2392299A (en
GB0324786D0 (en
Inventor
Michael A Seigler
Dieter K Weller
Robert E Rottmayer
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.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
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
Priority to US28143001P priority Critical
Application filed by Seagate Technology LLC filed Critical Seagate Technology LLC
Priority to PCT/US2002/009958 priority patent/WO2002082431A2/en
Publication of GB0324786D0 publication Critical patent/GB0324786D0/en
Publication of GB2392299A publication Critical patent/GB2392299A/en
Application granted granted Critical
Publication of GB2392299B publication Critical patent/GB2392299B/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/1278Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027Analogue recording
    • G11B5/03Biasing
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002Special dispositions or recording techniques
    • G11B2005/0005Arrangements, methods or circuits
    • G11B2005/001Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002Special dispositions or recording techniques
    • G11B2005/0005Arrangements, methods or circuits
    • G11B2005/001Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002Special dispositions or recording techniques
    • G11B2005/0026Pulse recording
    • G11B2005/0029Pulse recording using magnetisation components of the recording layer disposed mainly perpendicularly to the record carrier surface
GB0324786A 2001-04-04 2002-03-28 Perpendicular magnetic recording head with soft underlayer biasing Expired - Fee Related GB2392299B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US28143001P true 2001-04-04 2001-04-04
PCT/US2002/009958 WO2002082431A2 (en) 2001-04-04 2002-03-28 Perpendicular magnetic recording head with soft underlayer biasing

Publications (3)

Publication Number Publication Date
GB0324786D0 GB0324786D0 (en) 2003-11-26
GB2392299A GB2392299A (en) 2004-02-25
GB2392299B true GB2392299B (en) 2005-04-27

Family

ID=23077258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0324786A Expired - Fee Related GB2392299B (en) 2001-04-04 2002-03-28 Perpendicular magnetic recording head with soft underlayer biasing

Country Status (6)

Country Link
JP (1) JP2005509990A (en)
KR (1) KR20040052495A (en)
CN (1) CN1511314A (en)
AU (1) AU2002250478A1 (en)
GB (1) GB2392299B (en)
WO (1) WO2002082431A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9318131B2 (en) * 2013-06-28 2016-04-19 Seagate Technology Llc Write gap structure for a magnetic recording head

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5486967A (en) * 1993-03-15 1996-01-23 Kabushiki Kaisha Toshiba Magnetic disk memory system
US5636093A (en) * 1994-10-05 1997-06-03 U.S. Philips Corporation Magnetic multilayer device having resonant-tunneling double-barrier structure
US5695864A (en) * 1995-09-28 1997-12-09 International Business Machines Corporation Electronic device using magnetic components
US5815342A (en) * 1992-07-13 1998-09-29 Kabushiki Kaisha Toshiba Perpendicular magnetic recording/reproducing apparatus
US6188549B1 (en) * 1997-12-10 2001-02-13 Read-Rite Corporation Magnetoresistive read/write head with high-performance gap layers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5815342A (en) * 1992-07-13 1998-09-29 Kabushiki Kaisha Toshiba Perpendicular magnetic recording/reproducing apparatus
US5486967A (en) * 1993-03-15 1996-01-23 Kabushiki Kaisha Toshiba Magnetic disk memory system
US5636093A (en) * 1994-10-05 1997-06-03 U.S. Philips Corporation Magnetic multilayer device having resonant-tunneling double-barrier structure
US5695864A (en) * 1995-09-28 1997-12-09 International Business Machines Corporation Electronic device using magnetic components
US6188549B1 (en) * 1997-12-10 2001-02-13 Read-Rite Corporation Magnetoresistive read/write head with high-performance gap layers

Also Published As

Publication number Publication date
WO2002082431A2 (en) 2002-10-17
GB2392299A (en) 2004-02-25
WO2002082431A3 (en) 2002-12-19
GB0324786D0 (en) 2003-11-26
AU2002250478A1 (en) 2002-10-21
KR20040052495A (en) 2004-06-23
JP2005509990A (en) 2005-04-14
CN1511314A (en) 2004-07-07

Similar Documents

Publication Publication Date Title
DK1367587T3 (en) data Recorder
DE60336251D1 (en) Identification of recording media
DE60336579D1 (en) Cd recording device and printer
GB2411067B (en) Recording images together with link information
TWI353599B (en) Recording medium and recording and reproducing met
GB2383797B (en) Polishing composition for a substrate for a magnetic disk and polishing method employing it
SG107130A1 (en) Magnetic disk apparatus
AU7861100A (en) Hard disk drive suspension with integral flexible circuit
GB2372874B (en) Disc head slider having recessed trenched rails for reduced stiction
SG115451A1 (en) Injet head and injet printer
EP1516739A4 (en) Tape printer and tape cassette
HK1045211A1 (en) Precise positioning actuator for head element, head gimbal assembly with the actuator, disk drive apparatus with the head gimbal assembly, manufacturing method of actuator and manufacturing method of head, gimbal assembly
AT552980T (en) Ink cartridge for use with recording device and ink head recording device
AU2003221347A1 (en) Functional device and method of manufacturing the device, vertical magnetic recording medium, magnetic recording and reproducing device, and information processing device
TWI345234B (en) Information recording medium and method for manufacturing the same
AT524925T (en) Recording and playback system
TWI311751B (en) Information recording medium and information reproducing apparatus
SG108947A1 (en) Magnetic recording disk and process for manufacture thereof
GB2405719B (en) Managing and playing playlists for a portable media player
AT532026T (en) Command head with located shots
SG125055A1 (en) Disk drive
AU2002349770A1 (en) Optical head and information storage device
AU1274302A (en) Magnetic recording medium and magnetic recording apparatus
AU2003257563A1 (en) Optical head and optical recording medium drive device
GB2389448B (en) GMR magnetic transducer with nano-oxide exchange coupled free layers

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070328