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| Presentation | 2009-12-11 10:00 Effect of Cross-Track-Direction Grooves of a SUL on Magnetization Transitions Kinya Fudano (NEC Software Tohoku/Tohoku Univ.), Yoshihisa Nakamura (Iwate Prefectural Univ./Tohoku Univ.), Kiyoshi Yamakawa (AIT/Tohoku Univ.), Hiroaki Muraoka (Tohoku Univ.)  MR2009-46 Link to ES Tech. Rep. Archives: MR2009-46 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A high head field gradient is the most crucial criterion for a write head. A new approach with a grooved soft magnetic underlayer (SUL) structure was investigated for use with a single-pole planar writer. Cross-track grooves on the SUL surface improved the writing field gradient without degrading the field strength. In this study, a detailed analysis of the head field distributions and writing process with the heads and medium were performed using a finite-element method (FEM) computer simulation. The simulator was combined with a Stoner-Wohlfarth magnetization reversal model, in which head-medium magnetic interactions were incorporated by calculating the head and medium magnetization together as a ‘self-consistent’ system, designated as "SMART". A maximum gradient greater than 1000 Oe/nm was confirmed with the grooved SUL structure and the recorded magnetization distribution for the high gradient writing head field was calculated. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | perpendicular magnetic recording / FEM simulation / shielded planar writer / SUL / head-medium magneto-static interaction / self-consistent calculation / curling mode / magnetic recording simulator | |
| Reference Info. | IEICE Tech. Rep., vol. 109, Dec. 2009. | |
| Paper # | ||
| Date of Issue | 2009-12-03 (MR) | |
| 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 | MR2009-46 Link to ES Tech. Rep. Archives: MR2009-46 |
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| Conference Information | |
| Committee | ITE-MMS MRIS |
| Conference Date | 2009-12-10 - 2009-12-11 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Ehime Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | MRIS |
| Conference Code | 2009-12-MMS-MR |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effect of Cross-Track-Direction Grooves of a SUL on Magnetization Transitions |
| Sub Title (in English) | |
| Keyword(1) | perpendicular magnetic recording |
| Keyword(2) | FEM simulation |
| Keyword(3) | shielded planar writer |
| Keyword(4) | SUL |
| Keyword(5) | head-medium magneto-static interaction |
| Keyword(6) | self-consistent calculation |
| Keyword(7) | curling mode |
| Keyword(8) | magnetic recording simulator |
| 1st Author's Name | Kinya Fudano |
| 1st Author's Affiliation | NEC Software Tohoku, Ltd./RIEC, Tohoku University (NEC Software Tohoku/Tohoku Univ.) |
| 2nd Author's Name | Yoshihisa Nakamura |
| 2nd Author's Affiliation | Iwate Prefectural University/RIEC, Tohoku University (Iwate Prefectural Univ./Tohoku Univ.) |
| 3rd Author's Name | Kiyoshi Yamakawa |
| 3rd Author's Affiliation | Akita R&D Center/RIEC, Tohoku University (AIT/Tohoku Univ.) |
| 4th Author's Name | Hiroaki Muraoka |
| 4th Author's Affiliation | RIEC, Tohoku University (Tohoku Univ.) |
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| Speaker | Author-1 |
| Date Time | 2009-12-11 10:00:00 |
| Presentation Time | 30 minutes |
| Registration for | MRIS |
| Paper # | MR2009-46 |
| Volume (vol) | vol.109 |
| Number (no) | no.328 |
| Page | pp.67-72 |
| #Pages | 6 |
| Date of Issue | 2009-12-03 (MR) |
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