| Paper Abstract and Keywords |
| 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.) |
| 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. |
ITE Tech. Rep. |
| Paper # |
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| Conference Information |
| Committee |
IEICE-MRIS 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 |
IEICE-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) |
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| Keyword(1) |
γ'-Fe4N phase |
| Keyword(2) |
Single-Crystal Thin Film |
| Keyword(3) |
Large Magnetostriction |
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| Keyword(5) |
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| 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 |
IEICE-MRIS |
| Paper # |
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| Volume (vol) |
vol.45 |
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