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Paper Abstract and Keywords
Presentation 2022-06-09 15:25
Degree of order and perpendicular magnetic anisotropy energy for FePt granular film with structural inhomogeneity in film thickness direction
Daiki Isurugi, Takashi Saito (Tohoku Univ.), Kim Kong Tham, Ryosuke Kushibiki (TANAKA KIKINZOKU KOGYO K. K.), Tomoyuki Ogawa, Shin Saito (Tohoku Univ.) MRIS2022-4
Abstract (in Japanese) (See Japanese page) 
(in English) Dependence of the degree of order and perpendicular magnetic anisotropy (Ku⊥) on magnetic layer thickness (dmag) for FePt granular films with various grain boundary materials (GBMs) were investigated. According to the analysis for granular films with a constant GBM volume of 30 vol%, the order, disorder, and non-epitaxial portions co-existed in the FePt granular films. From the separate quantitative evaluation for these portions, the followings were found; 1) the degree of order and magnitudes of Ku⊥ for disorder and order portions against dmag showed constant values, while the film average evaluation resulted in the dependence of the degree of order and Ku⊥ on dmag, 2) for the order portion, Ku⊥ had linear correlation with the degree of order, and their values depended on GBMs.
Keyword (in Japanese) (See Japanese page) 
(in English) Heat assisted magnetic recording media / FePt granular films / Grain boundary material / Melting point / Degree of order / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 63, MRIS2022-4, pp. 19-23, June 2022.
Paper # MRIS2022-4 
Date of Issue 2022-06-02 (MRIS) 
ISSN 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 MRIS ITE-MMS  
Conference Date 2022-06-09 - 2022-06-10 
Place (in Japanese) (See Japanese page) 
Place (in English) RIEC, Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Recording system, Head, Media, and Others 
Paper Information
Registration To MRIS 
Conference Code 2022-06-MRIS-MMS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Degree of order and perpendicular magnetic anisotropy energy for FePt granular film with structural inhomogeneity in film thickness direction 
Sub Title (in English)  
Keyword(1) Heat assisted magnetic recording media  
Keyword(2) FePt granular films  
Keyword(3) Grain boundary material  
Keyword(4) Melting point  
Keyword(5) Degree of order  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Daiki Isurugi  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Takashi Saito  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Kim Kong Tham  
3rd Author's Affiliation TANAKA KIKINZOKU KOGYO K. K. (TANAKA KIKINZOKU KOGYO K. K.)
4th Author's Name Ryosuke Kushibiki  
4th Author's Affiliation TANAKA KIKINZOKU KOGYO K. K. (TANAKA KIKINZOKU KOGYO K. K.)
5th Author's Name Tomoyuki Ogawa  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
6th Author's Name Shin Saito  
6th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2022-06-09 15:25:00 
Presentation Time 25 minutes 
Registration for MRIS 
Paper # MRIS2022-4 
Volume (vol) vol.122 
Number (no) no.63 
Page pp.19-23 
#Pages 5 
Date of Issue 2022-06-02 (MRIS) 

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