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Paper Abstract and Keywords
Presentation 2017-10-04 15:40
Effect of multi-layered magnetic media for recording volumetric magnetic hologram
Naoki Hoshiba, Zen Shirakashi, Taichi Goto, Hiroyuki Takagi, Yuichi Nakamura, Lim Pang Boey, Hironaga Uchida, Mitsuteru Inoue (Toyohashi Univ.) CPM2017-63
Abstract (in Japanese) (See Japanese page) 
(in English) We have studied to realize rewritable magnetic hologram memory using magnetic garnet which is a stable material. Improvement of the diffraction efficiency of the magnetic medium is needed for improving the quality of the reconstructed image. However, it was pointed out that the recorded information in interference fringe was disappeared due to the diffusion of heat excessively generated near the surface layer of the magnetic medium. To avoid this effect of thermal diffusion, we proposed the multi-layered structure in which the transparent heat sink layers (HSL) were inserted in the magnetic medium. Based on the numerical simulation, the effect of thermal diffusion could be suppressed by the HSL medium, and the diffraction efficiency could be improved. However, since the strength of stray magnetic field may be decreased in the thin magnetic layers, the diffraction efficiency of HSL medium was lower than that of single layer medium. This small stray magnetic field was compensated by magnetic assist recording, and the diffraction efficiency higher than that of single layer film was obtained in HSL medium.
Keyword (in Japanese) (See Japanese page) 
(in English) Magnetic hologram / Thermomagnetic recording / Magnetic garnet / Multilayered structure / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 224, CPM2017-63, pp. 19-24, Oct. 2017.
Paper # CPM2017-63 
Date of Issue 2017-09-27 (CPM) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee CPM  
Conference Date 2017-10-04 - 2017-10-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To CPM 
Conference Code 2017-10-CPM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effect of multi-layered magnetic media for recording volumetric magnetic hologram 
Sub Title (in English)  
Keyword(1) Magnetic hologram  
Keyword(2) Thermomagnetic recording  
Keyword(3) Magnetic garnet  
Keyword(4) Multilayered structure  
Keyword(5)  
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1st Author's Name Naoki Hoshiba  
1st Author's Affiliation Toyohashi University of Technology (Toyohashi Univ.)
2nd Author's Name Zen Shirakashi  
2nd Author's Affiliation Toyohashi University of Technology (Toyohashi Univ.)
3rd Author's Name Taichi Goto  
3rd Author's Affiliation Toyohashi University of Technology (Toyohashi Univ.)
4th Author's Name Hiroyuki Takagi  
4th Author's Affiliation Toyohashi University of Technology (Toyohashi Univ.)
5th Author's Name Yuichi Nakamura  
5th Author's Affiliation Toyohashi University of Technology (Toyohashi Univ.)
6th Author's Name Lim Pang Boey  
6th Author's Affiliation Toyohashi University of Technology (Toyohashi Univ.)
7th Author's Name Hironaga Uchida  
7th Author's Affiliation Toyohashi University of Technology (Toyohashi Univ.)
8th Author's Name Mitsuteru Inoue  
8th Author's Affiliation Toyohashi University of Technology (Toyohashi Univ.)
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Speaker Author-1 
Date Time 2017-10-04 15:40:00 
Presentation Time 25 minutes 
Registration for CPM 
Paper # CPM2017-63 
Volume (vol) vol.117 
Number (no) no.224 
Page pp.19-24 
#Pages 6 
Date of Issue 2017-09-27 (CPM) 

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