JP5977988B2 - スピントルク発振器を有するマイクロ波アシスト磁気記録ヘッド及び磁気記録装置 - Google Patents

スピントルク発振器を有するマイクロ波アシスト磁気記録ヘッド及び磁気記録装置 Download PDF

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Publication number
JP5977988B2
JP5977988B2 JP2012093802A JP2012093802A JP5977988B2 JP 5977988 B2 JP5977988 B2 JP 5977988B2 JP 2012093802 A JP2012093802 A JP 2012093802A JP 2012093802 A JP2012093802 A JP 2012093802A JP 5977988 B2 JP5977988 B2 JP 5977988B2
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layer
magnetic
magnetic recording
spin
magnetic field
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JP2012093802A
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Japanese (ja)
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JP2013222485A (ja
JP2013222485A5 (enExample
Inventor
佐藤　陽
陽 佐藤
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Hitachi Ltd
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Hitachi Ltd
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Priority to JP2012093802A priority Critical patent/JP5977988B2/ja
Priority to US13/798,302 priority patent/US9030777B2/en
Publication of JP2013222485A publication Critical patent/JP2013222485A/ja
Publication of JP2013222485A5 publication Critical patent/JP2013222485A5/ja
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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
    • G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets
    • 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
    • G11B5/1278—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
    • G11B5/23—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
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Hall/Mr Elements (AREA)
JP2012093802A 2012-04-17 2012-04-17 スピントルク発振器を有するマイクロ波アシスト磁気記録ヘッド及び磁気記録装置 Active JP5977988B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2012093802A JP5977988B2 (ja) 2012-04-17 2012-04-17 スピントルク発振器を有するマイクロ波アシスト磁気記録ヘッド及び磁気記録装置
US13/798,302 US9030777B2 (en) 2012-04-17 2013-03-13 Microwave assisted magnetic recording head having spin torque oscillator, and magnetic recording apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012093802A JP5977988B2 (ja) 2012-04-17 2012-04-17 スピントルク発振器を有するマイクロ波アシスト磁気記録ヘッド及び磁気記録装置

Publications (3)

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JP2013222485A JP2013222485A (ja) 2013-10-28
JP2013222485A5 JP2013222485A5 (enExample) 2015-02-05
JP5977988B2 true JP5977988B2 (ja) 2016-08-24

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JP2012093802A Active JP5977988B2 (ja) 2012-04-17 2012-04-17 スピントルク発振器を有するマイクロ波アシスト磁気記録ヘッド及び磁気記録装置

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US (1) US9030777B2 (enExample)
JP (1) JP5977988B2 (enExample)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9230597B2 (en) * 2013-11-01 2016-01-05 HGST Netherlands B.V. Magnetic head having a spin torque oscillator (STO) with a hybrid heusler field generation layer (FGL)
JP2016012387A (ja) * 2014-06-30 2016-01-21 株式会社東芝 高周波アシスト記録ヘッドおよびこれを備えた磁気記録装置
US9305574B1 (en) 2014-09-23 2016-04-05 HGST Netherlands B.V. Negative-polarization spin-torque-oscillator
JP2016081550A (ja) * 2014-10-22 2016-05-16 株式会社東芝 高周波アシスト磁気ヘッド及び磁気記録再生装置
JP6130886B2 (ja) 2015-09-16 2017-05-17 株式会社東芝 磁気素子及び記憶装置
US9728210B2 (en) 2015-11-25 2017-08-08 Western Digital Technologies, Inc. Texture-control layer for spin torque oscillator
US10102871B1 (en) 2017-07-26 2018-10-16 Seagate Technology Llc High damping materials in shields and/or write pole
JP7166204B2 (ja) * 2019-03-11 2022-11-07 株式会社東芝 磁気ヘッド及び磁気記録装置
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
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
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
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
CN111030637B (zh) * 2019-12-13 2023-06-23 电子科技大学 一种5g通信用多频谱集成自旋纳米振荡器及其制备方法
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
JP7379271B2 (ja) * 2020-06-01 2023-11-14 株式会社東芝 磁気ヘッド及び磁気記録装置
US11257514B2 (en) 2020-06-25 2022-02-22 Western Digital Technologies, Inc. Magnetic recording devices having negative polarization layer to enhance spin-transfer torque
JP7372219B2 (ja) * 2020-08-25 2023-10-31 株式会社東芝 磁気ヘッド及び磁気記録装置
JP7465229B2 (ja) * 2021-02-25 2024-04-10 株式会社東芝 磁気ヘッド及び磁気記録装置
US12451156B2 (en) * 2022-07-25 2025-10-21 Headway Technologies, Inc. Dual-spin torque oscillator designs in microwave assisted magnetic recording

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06243527A (ja) 1993-02-15 1994-09-02 Hitachi Ltd 磁気記録方法およびその装置
KR20080108016A (ko) * 2007-06-07 2008-12-11 가부시끼가이샤 도시바 자기 기록 헤드 및 자기 기록 장치
JP2009049101A (ja) 2007-08-16 2009-03-05 Sony Corp 磁気メモリ素子及び磁気メモリ装置
JP4358279B2 (ja) * 2007-08-22 2009-11-04 株式会社東芝 磁気記録ヘッド及び磁気記録装置
US8300356B2 (en) * 2010-05-11 2012-10-30 Headway Technologies, Inc. CoFe/Ni Multilayer film with perpendicular anistropy for microwave assisted magnetic recording
JP5059924B2 (ja) * 2010-09-16 2012-10-31 株式会社日立製作所 スピントルク発振器、並びにそれを搭載した磁気記録ヘッド及び磁気記録装置
JP5492041B2 (ja) * 2010-09-28 2014-05-14 株式会社東芝 磁気ヘッド
US8274811B2 (en) * 2010-11-22 2012-09-25 Headway Technologies, Inc. Assisting FGL oscillations with perpendicular anisotropy for MAMR
JP5135419B2 (ja) * 2010-12-03 2013-02-06 株式会社東芝 スピントルク発振子、その製造方法、磁気記録ヘッド、磁気ヘッドアセンブリ、磁気記録装置
US8462461B2 (en) * 2011-07-05 2013-06-11 HGST Netherlands B.V. Spin-torque oscillator (STO) with magnetically damped free layer
JP5306431B2 (ja) * 2011-09-09 2013-10-02 株式会社東芝 磁気ヘッド及び磁気記録再生装置
JP5808273B2 (ja) * 2012-03-01 2015-11-10 株式会社日立製作所 磁気ヘッド、ヘッド駆動制御装置、磁気記憶装置、その制御方法
US9252710B2 (en) * 2012-11-27 2016-02-02 Headway Technologies, Inc. Free layer with out-of-plane anisotropy for magnetic device applications
US8908330B1 (en) * 2012-12-21 2014-12-09 Western Digital Technologies, Inc. Spin torque oscillator for microwave assisted magnetic recording with optimal geometries

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US9030777B2 (en) 2015-05-12
US20130271866A1 (en) 2013-10-17

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