GB2417361B - Thin-film magnetic head and manufacturing method thereof - Google Patents

Thin-film magnetic head and manufacturing method thereof

Info

Publication number
GB2417361B
GB2417361B GB0523692A GB0523692A GB2417361B GB 2417361 B GB2417361 B GB 2417361B GB 0523692 A GB0523692 A GB 0523692A GB 0523692 A GB0523692 A GB 0523692A GB 2417361 B GB2417361 B GB 2417361B
Authority
GB
United Kingdom
Prior art keywords
thin
manufacturing
magnetic head
film magnetic
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.)
Expired - Fee Related
Application number
GB0523692A
Other versions
GB2417361A (en
GB0523692D0 (en
Inventor
Kiyoshi Sato
Hideki Gochou
Hisayuki Yazawa
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.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
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 claimed from JP2003060962A external-priority patent/JP3842747B2/en
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of GB0523692D0 publication Critical patent/GB0523692D0/en
Publication of GB2417361A publication Critical patent/GB2417361A/en
Application granted granted Critical
Publication of GB2417361B publication Critical patent/GB2417361B/en
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
    • G11B5/33—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
    • G11B5/3967—Composite structural arrangements of transducers, e.g. inductive write and magnetoresistive read
    • 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
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • 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
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • G11B5/3106—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination
    • 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
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the 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
    • G11B5/313—Disposition of layers
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure
    • G11B5/3136—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure for reducing the pole-tip-protrusion at the head transducing surface, e.g. caused by thermal expansion of dissimilar materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)
GB0523692A 2003-03-07 2004-02-19 Thin-film magnetic head and manufacturing method thereof Expired - Fee Related GB2417361B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003060962A JP3842747B2 (en) 2003-03-07 2003-03-07 Thin film magnetic head and manufacturing method thereof
GB0403640A GB2399213B (en) 2003-03-07 2004-02-19 Thin-film magnetic head and manufacturing method thereof

Publications (3)

Publication Number Publication Date
GB0523692D0 GB0523692D0 (en) 2005-12-28
GB2417361A GB2417361A (en) 2006-02-22
GB2417361B true GB2417361B (en) 2007-10-31

Family

ID=35689140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0523692A Expired - Fee Related GB2417361B (en) 2003-03-07 2004-02-19 Thin-film magnetic head and manufacturing method thereof

Country Status (1)

Country Link
GB (1) GB2417361B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5371643A (en) * 1990-11-19 1994-12-06 Hitachi, Ltd. Magnetoresistive head structure that prevents under film from undesirable etching
JP2000155913A (en) * 1998-11-16 2000-06-06 Tdk Corp Thin film magnetic head and its manufacture
JP2000163715A (en) * 1998-11-26 2000-06-16 Victor Co Of Japan Ltd Magnetoresistance effect type thin film magnetic head and its production

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5371643A (en) * 1990-11-19 1994-12-06 Hitachi, Ltd. Magnetoresistive head structure that prevents under film from undesirable etching
JP2000155913A (en) * 1998-11-16 2000-06-06 Tdk Corp Thin film magnetic head and its manufacture
JP2000163715A (en) * 1998-11-26 2000-06-16 Victor Co Of Japan Ltd Magnetoresistance effect type thin film magnetic head and its production

Also Published As

Publication number Publication date
GB2417361A (en) 2006-02-22
GB0523692D0 (en) 2005-12-28

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 20090305

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110219