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| Presentation | 2016-07-08 13:25 Relationship between Lattice Strain and L10 Ordering in Epitaxial FePt Films Masahiro Nakamura, Ryoma Ochiai (Chuo Univ.), Mitsuru Ohtake (Kogakuin Univ./Chuo Univ.), Masaaki Futamoto (Chuo Univ.), Fumiyoshi Kirino (Tokyo Univ. Arts), Nobuyuki Inaba (Yamagata Univ.)  MR2016-14 Link to ES Tech. Rep. Archives: MR2016-14 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In order to apply FePt alloy thin film with L10 structure to magnetic recording media, etc., it is required to control the easy magnetization axis (c-axis) perpendicular to the surface. However, when a film with L10 structure is formed on a (001)-oriented underlayer or substrate, L10(100) and L10(010) variants whose c-axis lies in the film plane may coexist with the L10(001) variant with the c-axis perpendicular to the substrate surface. In order to control the c-axis perpendicular to the surface, it is effective to introduce tensile stress in lateral direction caused by lattice mismatch with the substrate. In the present study, FePt films of 10 nm thickness are prepared on various (001) oxide substrates with different lattice constants. The influences of lattice strain caused by lattice mismatch on the variant orientation and the order degree are investigated. In addition, the effects of cap-layer formed on FePt film are also studied. The results indicate that a larger lattice mismatch is effective in enhancing the growth and ordering of L10(001) variant, and the presence of cap-layer is useful in further promoting the tendency. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | FePt / thin film / L10 ordered structure / lattice strain / crystallographic orientation / epitaxial growth / single-crystal substrate / | |
| Reference Info. | IEICE Tech. Rep., vol. 116, July 2016. | |
| Paper # | ||
| Date of Issue | 2016-07-01 (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 | MR2016-14 Link to ES Tech. Rep. Archives: MR2016-14 |
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| Conference Information | |
| Committee | MRIS ITE-MMS |
| Conference Date | 2016-07-08 - 2016-07-08 |
| 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 | 2016-07-MR-MMS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Relationship between Lattice Strain and L10 Ordering in Epitaxial FePt Films |
| Sub Title (in English) | |
| Keyword(1) | FePt |
| Keyword(2) | thin film |
| Keyword(3) | L10 ordered structure |
| Keyword(4) | lattice strain |
| Keyword(5) | crystallographic orientation |
| Keyword(6) | epitaxial growth |
| Keyword(7) | single-crystal substrate |
| Keyword(8) | |
| 1st Author's Name | Masahiro Nakamura |
| 1st Author's Affiliation | Chuo University (Chuo Univ.) |
| 2nd Author's Name | Ryoma Ochiai |
| 2nd Author's Affiliation | Chuo University (Chuo Univ.) |
| 3rd Author's Name | Mitsuru Ohtake |
| 3rd Author's Affiliation | Kogakuin University/Chuo University (Kogakuin Univ./Chuo Univ.) |
| 4th Author's Name | Masaaki Futamoto |
| 4th Author's Affiliation | Chuo University (Chuo Univ.) |
| 5th Author's Name | Fumiyoshi Kirino |
| 5th Author's Affiliation | Tokyo University of the Arts (Tokyo Univ. Arts) |
| 6th Author's Name | Nobuyuki Inaba |
| 6th Author's Affiliation | Yamagata University (Yamagata Univ.) |
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| Speaker | Author-1 |
| Date Time | 2016-07-08 13:25:00 |
| Presentation Time | 25 minutes |
| Registration for | MRIS |
| Paper # | MR2016-14 |
| Volume (vol) | vol.116 |
| Number (no) | no.125 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2016-07-01 (MR) |
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