| Presentation | 2018-06-07 Micromagnetic analysis of MAMR recording head Ryo Itagaki, Yasushi Kanai, Simon Greaves, Hiroaki Muraoka, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A micromagnetic model analysis of a spin-torque oscillator (STO) and write head for microwave-assisted magnetic recording was carried out. The write head had tapered main pole and side shields and was based on a cutting-edge, commercial write head. The main pole - trailing shield gap (MP ? TS gap) was 20 nm and not parallel to avoid large magnetostatic interactions between the STO and the write head. The STO was integrated inside the gap and was exposed to the head air-bearing surface. First, it was confirmed using a STO model without write head that the field generation layer (FGL) field strength was more dependent on the distance between the FGL and the observation point than the FGL volume. It was also found that a small spin injection layer (SIL) area was not optimal. Next, using a STO model integrated into the MP-TS gap, it was confirmed that STO oscillated stably thanks to non-parallel MP-TS gap and larger SIL area relative to the FGL area. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Microwave-Assisted Magnetic Recording (MAMR) / Spin Torque Oscillator (STO) / Write Heads / Micromagnetic Simulation |
| Paper # | MRIS2018-5 |
| Date of Issue | 2018-05-31 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS |
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| Conference Date | 2018/6/7(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Recording Systems, etc. |
| Chair | Satoshi Matsunuma(Maxell) / Norihiko Ishii(NHK) |
| Vice Chair | |
| Secretary | (Toshiba) / (Kinki Univ.) |
| Assistant | Ikuya Tagawa(Tohoku Inst. of Tech.) / Shuhei Yoshida(AIST) |
| Paper Information | |
| Registration To | Technical Committee on Magnetic Recording & Information Storage / Technical Group on Multi-media Storage |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Micromagnetic analysis of MAMR recording head |
| Sub Title (in English) | Tilted STO with narrow gap write head |
| Keyword(1) | Microwave-Assisted Magnetic Recording (MAMR) |
| Keyword(2) | Spin Torque Oscillator (STO) |
| Keyword(3) | Write Heads |
| Keyword(4) | Micromagnetic Simulation |
| 1st Author's Name | Ryo Itagaki |
| 1st Author's Affiliation | Niigata Institute of Technology(Niigata Inst. of Tech.) |
| 2nd Author's Name | Yasushi Kanai |
| 2nd Author's Affiliation | Niigata Institute of Technology(Niigata Inst. of Tech.) |
| 3rd Author's Name | Simon Greaves |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 4th Author's Name | Hiroaki Muraoka |
| 4th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2018-06-07 |
| Paper # | MRIS2018-5 |
| Volume (vol) | vol.118 |
| Number (no) | MRIS-74 |
| Page | pp.pp.25-30(MRIS), |
| #Pages | 6 |
| Date of Issue | 2018-05-31 (MRIS) |