| Presentation | 2005/7/1 Magnetization Reversal and Thermal Stability of CoPt/Ru Patterned Films Takehito SHIMATSU, Kaname MITSUZUKA, Hiroaki MURAOKA, Nobuaki KIKUCHI, J. C. Lodder, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Dot arrays with diameter D=80-245nm are made of Co_<80>Pt_<20> (20nm) films with a large perpendicular anisotropy energy. Coercive force increases as the D decrease, and shows 7.6kOe at D=80nm. The switching volume for the array of D=140nm dots was estimated to be about 1.6×10^4nm^3, which was only about 5% of the dot volume. However, the MFM images revealed that all dots show single domain state during the magnetization reversal. It is likely that the reversal process starts from a nucleation at the center of the dot followed by propagation process. Moreover, the change in the switching field distribution as a function of D was discussed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CoPt films / patterned films / dot arrays / magnetization reversal mechanism / uniaxial anisotropy / coercive force / switching field distribution |
| Paper # | MR2005-20 |
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| Conference Information | |
| Committee | MR |
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| Conference Date | 2005/7/1(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| 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) | Magnetization Reversal and Thermal Stability of CoPt/Ru Patterned Films |
| Sub Title (in English) | |
| Keyword(1) | CoPt films |
| Keyword(2) | patterned films |
| Keyword(3) | dot arrays |
| Keyword(4) | magnetization reversal mechanism |
| Keyword(5) | uniaxial anisotropy |
| Keyword(6) | coercive force |
| Keyword(7) | switching field distribution |
| 1st Author's Name | Takehito SHIMATSU |
| 1st Author's Affiliation | RIEC, Tohoku University() |
| 2nd Author's Name | Kaname MITSUZUKA |
| 2nd Author's Affiliation | RIEC, Tohoku University |
| 3rd Author's Name | Hiroaki MURAOKA |
| 3rd Author's Affiliation | RIEC, Tohoku University |
| 4th Author's Name | Nobuaki KIKUCHI |
| 4th Author's Affiliation | SMI, MESA+, University of Twente |
| 5th Author's Name | J. C. Lodder |
| 5th Author's Affiliation | SMI, MESA+, University of Twente |
| Date | 2005/7/1 |
| Paper # | MR2005-20 |
| Volume (vol) | vol.105 |
| Number (no) | 167 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |