CN115691564B - 磁头及磁记录装置 - Google Patents

磁头及磁记录装置 Download PDF

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Publication number
CN115691564B
CN115691564B CN202210026346.3A CN202210026346A CN115691564B CN 115691564 B CN115691564 B CN 115691564B CN 202210026346 A CN202210026346 A CN 202210026346A CN 115691564 B CN115691564 B CN 115691564B
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CN
China
Prior art keywords
magnetic
magnetic layer
layer
pole
magnetic pole
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.)
Active
Application number
CN202210026346.3A
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English (en)
Chinese (zh)
Other versions
CN115691564A (zh
Inventor
中川裕治
高岸雅幸
成田直幸
永泽鹤美
前田知幸
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.)
Toshiba Corp
Toshiba Electronic Devices and Storage Corp
Original Assignee
Toshiba Corp
Toshiba Electronic Devices and Storage 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.)
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Publication date
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Publication of CN115691564A publication Critical patent/CN115691564A/zh
Application granted granted Critical
Publication of CN115691564B publication Critical patent/CN115691564B/zh
Active legal-status Critical Current
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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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/23—Gap features
    • G11B5/235—Selection of material for gap filler
    • 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
    • G11B5/31—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
    • G11B5/313—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
    • G11B5/314—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 where the layers are extra layers normally not provided in the transducing structure, e.g. optical layers
    • 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
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0024—Microwave assisted recording
    • 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
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • G11B5/2452—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track where the dimensions of the effective gap are controlled
    • G11B5/2455—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track where the dimensions of the effective gap are controlled the magnetic circuit including at least one magnetic thin film of controllable properties

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
CN202210026346.3A 2021-07-30 2022-01-11 磁头及磁记录装置 Active CN115691564B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-125149 2021-07-30
JP2021125149A JP7561708B2 (ja) 2021-07-30 2021-07-30 磁気ヘッド及び磁気記録装置

Publications (2)

Publication Number Publication Date
CN115691564A CN115691564A (zh) 2023-02-03
CN115691564B true CN115691564B (zh) 2025-06-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210026346.3A Active CN115691564B (zh) 2021-07-30 2022-01-11 磁头及磁记录装置

Country Status (3)

Country Link
US (1) US11810601B2 (enExample)
JP (1) JP7561708B2 (enExample)
CN (1) CN115691564B (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2024060942A (ja) 2022-10-20 2024-05-07 株式会社東芝 磁気ヘッド及び磁気記録装置
JP2024081173A (ja) 2022-12-06 2024-06-18 株式会社東芝 磁気記録媒体及び磁気記録装置
JP2024083047A (ja) 2022-12-09 2024-06-20 株式会社東芝 磁気記録装置
JPWO2024171896A1 (enExample) 2023-02-13 2024-08-22
JP2024123725A (ja) * 2023-03-01 2024-09-12 株式会社東芝 磁気ヘッド及び磁気記録装置
JP2024123726A (ja) 2023-03-01 2024-09-12 株式会社東芝 磁気ヘッド及び磁気記録装置
JP2024123728A (ja) 2023-03-01 2024-09-12 株式会社東芝 磁気ヘッド及び磁気記録装置
JP2024123729A (ja) * 2023-03-01 2024-09-12 株式会社東芝 磁気ヘッド及び磁気記録装置
JP2024123727A (ja) 2023-03-01 2024-09-12 株式会社東芝 磁気ヘッド及び磁気記録装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105023586A (zh) * 2014-04-25 2015-11-04 株式会社东芝 磁记录头及磁记录装置
US10121497B1 (en) * 2017-10-12 2018-11-06 Tdk Coporation Magnetic recording head with spin torque oscillator layers satisfying width, thickness and angle relationship formulas

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JP2007250094A (ja) * 2006-03-16 2007-09-27 Fujitsu Ltd 磁気記録媒体、磁気記録媒体の製造方法、及び磁気記録装置
US7616412B2 (en) 2006-07-21 2009-11-10 Carnegie Melon University Perpendicular spin-torque-driven magnetic oscillator
JP2008277586A (ja) 2007-04-27 2008-11-13 Toshiba Corp 磁気素子、磁気記録ヘッド及び磁気記録装置
JP5361259B2 (ja) * 2008-06-19 2013-12-04 株式会社東芝 スピントルク発振子、磁気記録ヘッド、磁気ヘッドアセンブリ及び磁気記録装置
WO2011027396A1 (ja) * 2009-09-03 2011-03-10 株式会社 東芝 磁気記録再生装置
US8274811B2 (en) * 2010-11-22 2012-09-25 Headway Technologies, Inc. Assisting FGL oscillations with perpendicular anisotropy for MAMR
JP5106667B1 (ja) 2011-08-29 2012-12-26 株式会社日立製作所 磁気記録再生装置及びマイクロ波アシスト磁気記録方法
JP6495841B2 (ja) 2016-02-16 2019-04-03 株式会社東芝 磁気記録ヘッド及び磁気記録再生装置
JP6297104B2 (ja) * 2016-08-04 2018-03-20 株式会社東芝 磁気記憶装置及びその製造方法
JP2018147540A (ja) 2017-03-08 2018-09-20 株式会社東芝 磁気ヘッド及び磁気記録再生装置
JP6867982B2 (ja) 2018-08-20 2021-05-12 株式会社東芝 磁気ヘッド及び磁気記録再生装置
JP7071900B2 (ja) * 2018-09-04 2022-05-19 株式会社東芝 磁気ヘッド及び磁気記録再生装置
JP6586251B2 (ja) * 2019-01-30 2019-10-02 株式会社東芝 磁気記録ヘッド及び磁気記録再生装置
JP7159085B2 (ja) 2019-03-11 2022-10-24 株式会社東芝 磁気記録装置及び磁気ヘッド
JP7319505B2 (ja) 2019-09-06 2023-08-02 株式会社東芝 磁気ヘッド及び磁気記録装置
JP7319603B2 (ja) * 2019-09-06 2023-08-02 株式会社東芝 磁気ヘッド及び磁気記録装置
JP7319604B2 (ja) * 2019-10-03 2023-08-02 株式会社東芝 磁気ヘッド及び磁気記録装置
JP7424946B2 (ja) 2019-11-07 2024-01-30 株式会社東芝 磁気ヘッド及び磁気記録装置
US11437059B2 (en) * 2019-11-07 2022-09-06 Kabushiki Kaisha Toshiba Magnetic head and magnetic recording device with stacked body material configurations
JP7319605B2 (ja) * 2020-01-15 2023-08-02 株式会社東芝 磁気ヘッド及び磁気記録装置
JP7383576B2 (ja) * 2020-07-01 2023-11-20 株式会社東芝 磁気ヘッド及び磁気記録装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105023586A (zh) * 2014-04-25 2015-11-04 株式会社东芝 磁记录头及磁记录装置
US10121497B1 (en) * 2017-10-12 2018-11-06 Tdk Coporation Magnetic recording head with spin torque oscillator layers satisfying width, thickness and angle relationship formulas

Also Published As

Publication number Publication date
CN115691564A (zh) 2023-02-03
US20230031273A1 (en) 2023-02-02
US11810601B2 (en) 2023-11-07
JP7561708B2 (ja) 2024-10-04
JP2023020022A (ja) 2023-02-09

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