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| Presentation | 2018-06-07 15:20 Micromagnetic analysis of MAMR recording head -- Tilted STO with narrow gap write head -- Ryo Itagaki, Yasushi Kanai (Niigata Inst. of Tech.), Simon Greaves, Hiroaki Muraoka (Tohoku Univ.)  MRIS2018-5 Link to ES Tech. Rep. Archives: MRIS2018-5 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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) |
| (in English) | Microwave-Assisted Magnetic Recording (MAMR) / Spin Torque Oscillator (STO) / Write Heads / Micromagnetic Simulation / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 74, MRIS2018-5, pp. 25-30, June 2018. | |
| Paper # | MRIS2018-5 | |
| Date of Issue | 2018-05-31 (MRIS) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | MRIS2018-5 Link to ES Tech. Rep. Archives: MRIS2018-5 |
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| Conference Information | |
| Committee | MRIS ITE-MMS |
| Conference Date | 2018-06-07 - 2018-06-08 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Recording Systems, etc. |
| Paper Information | |
| Registration To | MRIS |
| Conference Code | 2018-06-MRIS-MMS |
| Language | Japanese |
| 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 |
| Keyword(5) | |
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| 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.) |
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| Speaker | Author-1 |
| Date Time | 2018-06-07 15:20:00 |
| Presentation Time | 25 minutes |
| Registration for | MRIS |
| Paper # | MRIS2018-5 |
| Volume (vol) | vol.118 |
| Number (no) | no.74 |
| Page | pp.25-30 |
| #Pages | 6 |
| Date of Issue | 2018-05-31 (MRIS) |
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