| Presentation | 2021-10-08 γ' Phase Formation and Magnetostriction in Fe-N Thin Films Yura Maeda, Kosuke Imamura, Mitsuru Ohtake, Tetsuroh Kawai, Masaaki Futamoto, Fumiyoshi Kirino, Nobuyuki Inaba, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | γ'-Fe4N phase / Single-Crystal Thin Film / Large Magnetostriction |
| Paper # | MRIS2021-7 |
| Date of Issue | 2021-10-01 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS |
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| Conference Date | 2021/10/8(1days) |
| 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. |
| Chair | Shuhei Yoshida(Kinki Univ.) / Kenji Machida(NHK) |
| Vice Chair | |
| Secretary | (Tohoku Inst. of Tech.) / (AIST) |
| Assistant | Yasuaki Nakamura(Ehime Univ.) / Yoshiyuki Hirayama(Samsung) |
| Paper Information | |
| Registration To | Technical Committee on Magnetic Recording & Information Storage / Technical Group on Multi-media Storage |
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| Language | JPN |
| 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 |
| 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.) |
| Date | 2021-10-08 |
| Paper # | MRIS2021-7 |
| Volume (vol) | vol.121 |
| Number (no) | MRIS-193 |
| Page | pp.pp.6-10(MRIS), |
| #Pages | 5 |
| Date of Issue | 2021-10-01 (MRIS) |