JP7561708B2 - 磁気ヘッド及び磁気記録装置 - Google Patents

磁気ヘッド及び磁気記録装置 Download PDF

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Publication number
JP7561708B2
JP7561708B2 JP2021125149A JP2021125149A JP7561708B2 JP 7561708 B2 JP7561708 B2 JP 7561708B2 JP 2021125149 A JP2021125149 A JP 2021125149A JP 2021125149 A JP2021125149 A JP 2021125149A JP 7561708 B2 JP7561708 B2 JP 7561708B2
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JP
Japan
Prior art keywords
magnetic
magnetic layer
layer
pole
head
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
JP2021125149A
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English (en)
Japanese (ja)
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JP2023020022A5 (enExample
JP2023020022A (ja
Inventor
裕治 中川
雅幸 高岸
直幸 成田
鶴美 永澤
知幸 前田
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.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba Electronic Devices and Storage Corp filed Critical Toshiba Corp
Priority to JP2021125149A priority Critical patent/JP7561708B2/ja
Priority to CN202210026346.3A priority patent/CN115691564B/zh
Priority to US17/575,824 priority patent/US11810601B2/en
Publication of JP2023020022A publication Critical patent/JP2023020022A/ja
Publication of JP2023020022A5 publication Critical patent/JP2023020022A5/ja
Application granted granted Critical
Publication of JP7561708B2 publication Critical patent/JP7561708B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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)
JP2021125149A 2021-07-30 2021-07-30 磁気ヘッド及び磁気記録装置 Active JP7561708B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2021125149A JP7561708B2 (ja) 2021-07-30 2021-07-30 磁気ヘッド及び磁気記録装置
CN202210026346.3A CN115691564B (zh) 2021-07-30 2022-01-11 磁头及磁记录装置
US17/575,824 US11810601B2 (en) 2021-07-30 2022-01-14 Magnetic head including multiple magnetic layers and magnetic recording device

Applications Claiming Priority (1)

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

Publications (3)

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JP2023020022A JP2023020022A (ja) 2023-02-09
JP2023020022A5 JP2023020022A5 (enExample) 2023-06-30
JP7561708B2 true JP7561708B2 (ja) 2024-10-04

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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 (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010003354A (ja) 2008-06-19 2010-01-07 Toshiba Corp 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
JP2013048002A (ja) 2011-08-29 2013-03-07 Hitachi Ltd 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
JP2017147007A (ja) 2016-02-16 2017-08-24 株式会社東芝 磁気記録ヘッド及び磁気記録再生装置
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
JP2020030871A (ja) 2018-08-20 2020-02-27 株式会社東芝 磁気ヘッド及び磁気記録再生装置
JP2020149737A (ja) 2019-03-11 2020-09-17 株式会社東芝 磁気記録装置及び磁気ヘッド
JP2021044029A (ja) 2019-09-06 2021-03-18 株式会社東芝 磁気ヘッド及び磁気記録装置
JP2021077435A (ja) 2019-11-07 2021-05-20 株式会社東芝 磁気ヘッド及び磁気記録装置

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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
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
JP2015210835A (ja) * 2014-04-25 2015-11-24 株式会社東芝 磁気記録ヘッドおよび磁気記録装置
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
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
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
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
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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010003354A (ja) 2008-06-19 2010-01-07 Toshiba Corp 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
JP2013048002A (ja) 2011-08-29 2013-03-07 Hitachi Ltd 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
JP2017147007A (ja) 2016-02-16 2017-08-24 株式会社東芝 磁気記録ヘッド及び磁気記録再生装置
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
JP2020030871A (ja) 2018-08-20 2020-02-27 株式会社東芝 磁気ヘッド及び磁気記録再生装置
JP2020149737A (ja) 2019-03-11 2020-09-17 株式会社東芝 磁気記録装置及び磁気ヘッド
JP2021044029A (ja) 2019-09-06 2021-03-18 株式会社東芝 磁気ヘッド及び磁気記録装置
JP2021077435A (ja) 2019-11-07 2021-05-20 株式会社東芝 磁気ヘッド及び磁気記録装置

Also Published As

Publication number Publication date
CN115691564A (zh) 2023-02-03
US20230031273A1 (en) 2023-02-02
CN115691564B (zh) 2025-06-20
US11810601B2 (en) 2023-11-07
JP2023020022A (ja) 2023-02-09

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