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Paper Abstract and Keywords
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
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

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  
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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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