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Paper Abstract and Keywords
Presentation 2026-06-05 10:25
A study of demagnetization effects on HAMR R/W simulator
Wataru Yamauchi, Yasuaki Nakamura (Ehime Univ.), Simon Greaves (Tohoku Univ.), Yasushi Kanai (Niigata Inst. Tech.), Yoshihiro Okamoto (Ehime Univ.) MRIS2026-3
Abstract (in Japanese) (See Japanese page) 
(in English) In heat-assisted magnetic recording (HAMR), the saturation magnetization of magnetic grains temporarily decreases due to heating, and consequently, the demagnetizing field strength also decreases. This paper investigates the effect of the demagnetizing field on magnetization reversal in HAMR based on presence or absence a demagnetizing field. The results reveal that the presence or absence of the demagnetizing field causes a difference of approximately 1% in the fraction of magnetic grains that undergo magnetization reversal.
Keyword (in Japanese) (See Japanese page) 
(in English) HAMR / Demagnetizing field / Demagnetizing effect / / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 57, MRIS2026-3, pp. 12-17, June 2026.
Paper # MRIS2026-3 
Date of Issue 2026-05-28 (MRIS) 
ISSN 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 MRIS2026-3

Conference Information
Committee MRIS ITE-MMS ITE-TOHOKU  
Conference Date 2026-06-04 - 2026-06-05 
Place (in Japanese) (See Japanese page) 
Place (in English) RIEC, Tohoku Univ 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MRIS 
Conference Code 2026-06-MRIS-MMS-TOHOKU 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of demagnetization effects on HAMR R/W simulator 
Sub Title (in English)  
Keyword(1) HAMR  
Keyword(2) Demagnetizing field  
Keyword(3) Demagnetizing effect  
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1st Author's Name Wataru Yamauchi  
1st Author's Affiliation Ehime University (Ehime Univ.)
2nd Author's Name Yasuaki Nakamura  
2nd Author's Affiliation Ehime University (Ehime Univ.)
3rd Author's Name Simon Greaves  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Yasushi Kanai  
4th Author's Affiliation Niigata Institute of Technology (Niigata Inst. Tech.)
5th Author's Name Yoshihiro Okamoto  
5th Author's Affiliation Ehime University (Ehime Univ.)
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Speaker Author-1 
Date Time 2026-06-05 10:25:00 
Presentation Time 25 minutes 
Registration for MRIS 
Paper # MRIS2026-3 
Volume (vol) vol.126 
Number (no) no.57 
Page pp.12-17 
#Pages 6 
Date of Issue 2026-05-28 (MRIS) 

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