| Presentation | 2023-06-08 Development of CoPtCr-oxide granular typed sputtered tape with oxygen deficiency compensation from Co oxide-added composite target Junichi Tachibana, HIroyuki Kobayashi, Teruo Sai, Takashi Aizawa, Shin Saito, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The oxidization in the granular recording layer controlled by changing the amount of Co3O4 added to the CoPtCr-SiO2 composite target was investigated to reduce the noise of the sputtered tapes under distinctive conditions of the roll-to-roll sputtering system. The addition of Co3O4 causes the diffusion of Si and Cr from within the magnetic grains to the oxide grain boundaries by oxidation, resulting in the simultaneous enhancement of magnetic isolation and magnetic anisotropy. The noise voltage was reduced owing to the enhanced magnetic isolation, and the signal-to-noise ratio (SNR) improved by 3.6 dB with the addition of 1.2 mol% Co3O4 to the target. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | sputtered tape / roll-to-roll system / CoPtCr-based granular recording layer / CoPtCr-SiO2-Co3O4 composite target |
| Paper # | MRIS2023-4 |
| Date of Issue | 2023-06-01 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS |
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| Conference Date | 2023/6/8(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. （RIEC) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Recording system, head, media, etc |
| Chair | Ikuya Tagawa(Tohoku Inst. of Tech.) / 町田 賢司(NHK) |
| Vice Chair | |
| Secretary | (Ehime Univ.) / (Samsung) |
| Assistant | Nobuaki Kikuchi(Tohoku Univ.) / Toshiki Yamaji(AIST) |
| 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) | Development of CoPtCr-oxide granular typed sputtered tape with oxygen deficiency compensation from Co oxide-added composite target |
| Sub Title (in English) | |
| Keyword(1) | sputtered tape |
| Keyword(2) | roll-to-roll system |
| Keyword(3) | CoPtCr-based granular recording layer |
| Keyword(4) | CoPtCr-SiO2-Co3O4 composite target |
| 1st Author's Name | Junichi Tachibana |
| 1st Author's Affiliation | Sony Storage Media Solutions Corporation(Sony Storage Media Solutions) |
| 2nd Author's Name | HIroyuki Kobayashi |
| 2nd Author's Affiliation | Sony Storage Media Solutions Corporation(Sony Storage Media Solutions) |
| 3rd Author's Name | Teruo Sai |
| 3rd Author's Affiliation | Sony Storage Media Solutions Corporation(Sony Storage Media Solutions) |
| 4th Author's Name | Takashi Aizawa |
| 4th Author's Affiliation | Sony Storage Media Solutions Corporation(Sony Storage Media Solutions) |
| 5th Author's Name | Shin Saito |
| 5th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2023-06-08 |
| Paper # | MRIS2023-4 |
| Volume (vol) | vol.123 |
| Number (no) | MRIS-65 |
| Page | pp.pp.21-26(MRIS), |
| #Pages | 6 |
| Date of Issue | 2023-06-01 (MRIS) |