Paper Abstract and Keywords |
Presentation |
2019-06-13 14:55
Micromagnetic analysis of MAMR recording head
-- Oscillation of STO with parallel head gap -- Ryo Itagaki, Yasushi Kanai (NIIT), Simon Greaves (Tohoku Univ.) MRIS2019-4 Link to ES Tech. Rep. Archives: MRIS2019-4 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
A micromagnetic model analysis was carried out for a spin-torque oscillator (STO) inserted into the write head gap for microwave-assisted magnetic recording. We derived the conditions for stable STO oscillation assuming the write head main pole (MP) and trailing shield (TS) gap to be parallel, as a parallel MP – TS gap is preferable from the viewpoint of the manufacturing process. First, it was shown that the STO oscillated stably when the parallel head gap was tilted (i.e. was not perpendicular) to the medium surface. Next, we showed that the STO oscillated stably for relatively high Gilbert damping constants, α, of the spin injection layer (α = 0.05) and FGL exchange (A = 4.0 × 10-6 erg/cm). |
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. 119, no. 79, MRIS2019-4, pp. 15-20, June 2019. |
Paper # |
MRIS2019-4 |
Date of Issue |
2019-06-06 (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 |
MRIS2019-4 Link to ES Tech. Rep. Archives: MRIS2019-4 |
Conference Information |
Committee |
MRIS ITE-MMS |
Conference Date |
2019-06-13 - 2019-06-14 |
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 |
2019-06-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) |
Oscillation of STO with parallel head gap |
Keyword(1) |
Microwave-Assisted Magnetic Recording (MAMR) |
Keyword(2) |
Spin Torque Oscillator (STO) |
Keyword(3) |
Write Heads |
Keyword(4) |
Micromagnetic Simulation |
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1st Author's Name |
Ryo Itagaki |
1st Author's Affiliation |
Niigata Institute of Technology (NIIT) |
2nd Author's Name |
Yasushi Kanai |
2nd Author's Affiliation |
Niigata Institute of Technology (NIIT) |
3rd Author's Name |
Simon Greaves |
3rd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
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Speaker |
Author-1 |
Date Time |
2019-06-13 14:55:00 |
Presentation Time |
25 minutes |
Registration for |
MRIS |
Paper # |
MRIS2019-4 |
Volume (vol) |
vol.119 |
Number (no) |
no.79 |
Page |
pp.15-20 |
#Pages |
6 |
Date of Issue |
2019-06-06 (MRIS) |
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