| Presentation | 2014-06-12 Accurate Control of c-Axis Orientation of FePt, FePd, and CoPt Alloy Thin Films with L1_0 Ordered Structure Mitsuru OHTAKE, Akira ITABASHI, Masaaki FUTAMOTO, Fumiyoshi KIRINO, Nobuyuki INABA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Thin films with L1_0 structure formed on underlayers of (001)-oriented grains or (001) single-crystal substrates may involve (100) crystal with the c-axis lying in the film plane in addition to (001) crystal with the c-axis perpendicular to the film surface. In the present study, FePt, FePd, and CoPt alloy films are prepared on MgO(001) single-crystal substrates. The c-axis orientation is accurately controlled to be perpendicular to the surface by introducing a thin MgO cap layer on magnetic films with disordered structure prepared by low-temperature deposition at 200℃ and by annealing the samples at 600℃. The lattice of magnetic film is effectively expanded along the in-plane direction through accommodation of the lattice misfits with respect to not only the lower MgO substrate but also the upper MgO cap layer. As a result, the phase transformation preferentially occurs along the perpendicular direction in the MgO/(FePt, FePd, CoPt)/MgO hetero-structures. Furthermore, the introduction of cap layer promotes L1_0 ordering. The order degrees of 10-nm-thick FePt, FePd, and CoPt films without and with a cap layer, (S_ |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | FePt / FePd / CoPt / L1_0 ordered structure / phase transformation / c-axis orientation |
| Paper # | MR2014-2 |
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| Conference Information | |
| Committee | MR |
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| Conference Date | 2014/6/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Magnetic Recording (MR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Accurate Control of c-Axis Orientation of FePt, FePd, and CoPt Alloy Thin Films with L1_0 Ordered Structure |
| Sub Title (in English) | |
| Keyword(1) | FePt |
| Keyword(2) | FePd |
| Keyword(3) | CoPt |
| Keyword(4) | L1_0 ordered structure |
| Keyword(5) | phase transformation |
| Keyword(6) | c-axis orientation |
| 1st Author's Name | Mitsuru OHTAKE |
| 1st Author's Affiliation | Faculty of Science and Engineering, Chuo University() |
| 2nd Author's Name | Akira ITABASHI |
| 2nd Author's Affiliation | Faculty of Science and Engineering, Chuo University |
| 3rd Author's Name | Masaaki FUTAMOTO |
| 3rd Author's Affiliation | Faculty of Science and Engineering, Chuo University |
| 4th Author's Name | Fumiyoshi KIRINO |
| 4th Author's Affiliation | Graduate School of Fine Arts, Tokyo University of the Arts |
| 5th Author's Name | Nobuyuki INABA |
| 5th Author's Affiliation | Faculty of Engineering, Yamagata University |
| Date | 2014-06-12 |
| Paper # | MR2014-2 |
| Volume (vol) | vol.114 |
| Number (no) | 77 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |