| IEICE Technical Committee Submission System Conference Paper's Information |
Online Proceedings [Sign in] Tech. Rep. Archives |
| Go Top Page | Go Previous | [Japanese] / [English] |
| Paper Abstract and Keywords | ||
| Presentation | 2015-06-04 14:15 Dual free-layer spin-torque oscillator for read head application in magnetic recording Tazumi Nagasawa, Kiwamu Kudo, Hirofumi Suto, Michinaga Yamagishi, Koichi Mizushima, Rie Sato (Toshiba)  MR2015-2 Link to ES Tech. Rep. Archives: MR2015-2 |
|
| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Read heads for HDDs with areal density over 2 Tb/in2 are predicted to suffer from magnetic noises that seriously reduce the signal-to-noise (S/N) ratio. To overcome this problem, a novel read head composed of a spin-torque oscillator (STO) has recently been proposed. For the implementation of an STO read head, large-amplitude microwave emissions with narrow spectral linewidth are required. In this article, we experimentally study the oscillation properties of an STO with a dual free layer and its response to a pulsed magnetic field. This type of STO shows large-amplitude oscillations with narrow linewidth because of synchronized magnetization motions in the two free layers. In addition, this STO has a thinner structure than the conventional one. This feature is preferable for an STO read head, in which the STO needs to be placed inside a narrow shield-to-shield gap to obtain high spatial resolution. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Spin-Torque Oscillator / STO / Magnetic Recording / Read Head / Dual Free Layer / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, June 2015. | |
| Paper # | ||
| Date of Issue | 2015-05-28 (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 | MR2015-2 Link to ES Tech. Rep. Archives: MR2015-2 |
|
| Conference Information | |
| Committee | MRIS ITE-MMS |
| Conference Date | 2015-06-04 - 2015-06-05 |
| 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 | 2015-06-MR-MMS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Dual free-layer spin-torque oscillator for read head application in magnetic recording |
| Sub Title (in English) | |
| Keyword(1) | Spin-Torque Oscillator |
| Keyword(2) | STO |
| Keyword(3) | Magnetic Recording |
| Keyword(4) | Read Head |
| Keyword(5) | Dual Free Layer |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Tazumi Nagasawa |
| 1st Author's Affiliation | Toshiba Corporation (Toshiba) |
| 2nd Author's Name | Kiwamu Kudo |
| 2nd Author's Affiliation | Toshiba Corporation (Toshiba) |
| 3rd Author's Name | Hirofumi Suto |
| 3rd Author's Affiliation | Toshiba Corporation (Toshiba) |
| 4th Author's Name | Michinaga Yamagishi |
| 4th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 5th Author's Name | Koichi Mizushima |
| 5th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 6th Author's Name | Rie Sato |
| 6th Author's Affiliation | Toshiba Corporation (Toshiba) |
| 7th Author's Name | |
| 7th Author's Affiliation | () |
| 8th Author's Name | |
| 8th Author's Affiliation | () |
| 9th Author's Name | |
| 9th Author's Affiliation | () |
| 10th Author's Name | |
| 10th Author's Affiliation | () |
| 11th Author's Name | |
| 11th Author's Affiliation | () |
| 12th Author's Name | |
| 12th Author's Affiliation | () |
| 13th Author's Name | |
| 13th Author's Affiliation | () |
| 14th Author's Name | |
| 14th Author's Affiliation | () |
| 15th Author's Name | |
| 15th Author's Affiliation | () |
| 16th Author's Name | |
| 16th Author's Affiliation | () |
| 17th Author's Name | |
| 17th Author's Affiliation | () |
| 18th Author's Name | |
| 18th Author's Affiliation | () |
| Speaker | Author-1 |
| Date Time | 2015-06-04 14:15:00 |
| Presentation Time | 25 minutes |
| Registration for | MRIS |
| Paper # | MR2015-2 |
| Volume (vol) | vol.115 |
| Number (no) | no.71 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2015-05-28 (MR) |
[Return to Top Page]