A proposal of high-density, high -requency recording write head for perpendicular magnetic recording in the next generation
| Project/Area Number |
24560425
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Niigata Institute of Technology |
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Principal Investigator |
KANAI Yasushi 新潟工科大学, 工学部, 教授 (00251786)
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| Co-Investigator(Renkei-kenkyūsha) |
GREAVES Simon 東北大学, 電気通信研究所, 准教授 (60375152)
MURAOKA Hiroaki 東北大学, 電気通信研究所, 教授 (20239479)
YOSHIDA Kazuetsu 工学院大学, 工学部, 教授 (90327718)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 垂直磁気記録 / マイクロマグネティック解析 / 記録ヘッド / 並列計算 |
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| Outline of Final Research Achievements |
For heat-assisted magnetic recording (HAMR), write head structure with dent for optical element, short yoke, and soft magnetic underlayer was proposed, which worked for high-frequency recording current. The maximum areal density of 8 terabit per square-inch was predicted with the write head.
For microwave-assisted magnetic recording (MAMR), tilted, not perpendicular to the media plane, spin-torque oscillator (STO) inserted into the tilted write head gap was proposed. The head had a large recording field and stable STO oscillation.
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Report
(4 results)
Research Products
(72 results)
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[Journal Article] Observation of boron diffusion in an annealed Ta/CoFeB/MgO magnetic tunnel junction with standing-wave hard x-ray photoemission2012
Author(s)
A. A. Greer, A.X. Gray, Shun Kanai, A. M. Kaiser, S. Ueda, Y. Yamashita, C. Bordel, G. Palsson, N. Maejima, S.-H. Yang, G. Conti, K. Kobayashi, Shoji Ikeda, Fumihiro Matsukura, Hideo Ohno, C. M. Schneider, J. B. Kortright, F. Hellman, and C. S. Fadley
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Journal Title
Applied Physics Letters
Volume: 101
Issue: 20
Pages: 202402-202402
DOI
Related Report
Peer Reviewed
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[Presentation] Modeling of writing process for two-dimensional magnetic recording and performance evaluation of two-dimensional neural network equalizer2012
Author(s)
M. Yamashita, Y. Okamoto, Y. Nakamura, H. Osawa, K. Miura, S. Greaves, H. Aoi, Y. Kanai, and H. Muraoka
Organizer
IEEE International Magnetics Conference
Place of Presentation
Vancouver, BC, Canada
Related Report
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