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| Presentation | 2021-10-08 13:25 γ' Phase Formation and Magnetostriction in Fe-N Thin Films Yura Maeda, Kosuke Imamura, Mitsuru Ohtake, Tetsuroh Kawai, Masaaki Futamoto (Yokohama Nat. Univ.), Fumiyoshi Kirino (Tokyo Univ. Arts), Nobuyuki Inaba (Yamagata Univ.)  MRIS2021-7 Link to ES Tech. Rep. Archives: MRIS2021-7 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Fe-N thin films are prepared on MgO single-crystal substrates by reactive sputtering. The influence of substrate temperature on the γ'-Fe4N phase formation is investigated. Furthermore, the magnetostriction coefficients, λ100 and λ111, of γ' phase are experimentally determined. A poly-crystalline film composed of γ' and α" phases is formed when the substrate temperature is RT. The film prepared at 200 °C involves γ' epitaxial crystal in addition to γ' poly-crystal, whereas that prepared at 400 °C consists of only γ' single-crystal. However when the substrate temperature increases up to 600 °C, a single-crystal film composed of α phase is formed. A moderate substrate temperature of about 400 °C is effective in the formation of γ' single-crystal film. The γ' single-crystal film shows a large positive λ100 value of –75×10–6 and a large negative λ111 value of +220×10–6. The present study has shown that γ'-Fe4N phase is one of the strong candidates for future rare-metal free magnetostrictive materials. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | γ'-Fe4N phase / Single-Crystal Thin Film / Large Magnetostriction / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 193, MRIS2021-7, pp. 6-10, Oct. 2021. | |
| Paper # | MRIS2021-7 | |
| Date of Issue | 2021-10-01 (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 | MRIS2021-7 Link to ES Tech. Rep. Archives: MRIS2021-7 |
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| Conference Information | |
| Committee | MRIS ITE-MMS |
| Conference Date | 2021-10-08 - 2021-10-08 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Recording Head, Spintronics, Solid State Memory, Media, etc. |
| Paper Information | |
| Registration To | MRIS |
| Conference Code | 2021-10-MRIS-MMS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | γ' Phase Formation and Magnetostriction in Fe-N Thin Films |
| Sub Title (in English) | |
| Keyword(1) | γ'-Fe4N phase |
| Keyword(2) | Single-Crystal Thin Film |
| Keyword(3) | Large Magnetostriction |
| Keyword(4) | |
| Keyword(5) | |
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| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yura Maeda |
| 1st Author's Affiliation | Yokohama National University (Yokohama Nat. Univ.) |
| 2nd Author's Name | Kosuke Imamura |
| 2nd Author's Affiliation | Yokohama National University (Yokohama Nat. Univ.) |
| 3rd Author's Name | Mitsuru Ohtake |
| 3rd Author's Affiliation | Yokohama National University (Yokohama Nat. Univ.) |
| 4th Author's Name | Tetsuroh Kawai |
| 4th Author's Affiliation | Yokohama National University (Yokohama Nat. Univ.) |
| 5th Author's Name | Masaaki Futamoto |
| 5th Author's Affiliation | Yokohama National University (Yokohama Nat. Univ.) |
| 6th Author's Name | Fumiyoshi Kirino |
| 6th Author's Affiliation | Tokyo University of the Arts (Tokyo Univ. Arts) |
| 7th Author's Name | Nobuyuki Inaba |
| 7th Author's Affiliation | Yamagata University (Yamagata Univ.) |
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| Speaker | Author-1 |
| Date Time | 2021-10-08 13:25:00 |
| Presentation Time | 25 minutes |
| Registration for | MRIS |
| Paper # | MRIS2021-7 |
| Volume (vol) | vol.121 |
| Number (no) | no.193 |
| Page | pp.6-10 |
| #Pages | 5 |
| Date of Issue | 2021-10-01 (MRIS) |
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