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Paper Abstract and Keywords
Presentation 2013-07-12 13:00
[Invited Talk] Effect of Microwave Fields on Reduction of Coercive Field in Perpendicular Medium
Yukio Nozaki, Naoko Ishida (Keio Univ.), Yoshikazu Soeno (TDK), Koji Sekiguchi (Keio Univ.) MR2013-6
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, microwave-assisted magnetic recording (MAMR) has been widely investigated to realize an areal density of HDDs exceeding 1 Tbpsi. The MAMR is the method to reduce the switching field by exciting a spin system using ferromagnetic resonance (FMR) phenomenon. Understanding the dynamical process of MAMR in dipole-dipole coupled granular perpendicular medium is essential for the MAMR applications. We have experimentally investigated the dynamical reversal process from the dependence of switching field on the strength of in-plane microwave magnetic field. The transition of reversal process from a non-uniform rotation to a uniform rotation was observed when the frequency of microwave field increased toward the ferromagnetic resonant frequency.
Keyword (in Japanese) (See Japanese page) 
(in English) Microwave-assisted magnetic recording (MAMR) / Perpendicularly magnetized film / Ferromagnetic resonance / / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, July 2013.
Paper #  
Date of Issue 2013-07-05 (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 MR2013-6

Conference Information
Committee MRIS ITE-MMS  
Conference Date 2013-07-12 - 2013-07-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Chuo Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Solid State Memory, Media, etc. 
Paper Information
Registration To MRIS 
Conference Code 2013-07-MR-MMS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effect of Microwave Fields on Reduction of Coercive Field in Perpendicular Medium 
Sub Title (in English)  
Keyword(1) Microwave-assisted magnetic recording (MAMR)  
Keyword(2) Perpendicularly magnetized film  
Keyword(3) Ferromagnetic resonance  
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1st Author's Name Yukio Nozaki  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Naoko Ishida  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Yoshikazu Soeno  
3rd Author's Affiliation TDK Corporation (TDK)
4th Author's Name Koji Sekiguchi  
4th Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2013-07-12 13:00:00 
Presentation Time 50 minutes 
Registration for MRIS 
Paper # MR2013-6 
Volume (vol) vol.113 
Number (no) no.127 
Page pp.1-6 
#Pages 6 
Date of Issue 2013-07-05 (MR) 

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