| Presentation | 2015-06-05 Microstructure and magnetic properties of CoPtCr-SiO2 granular media deposited at high substrate temperature Shintaro Hinata, Kim Kong Tham, Shin Saito, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Application of substrate heating during deposition of CoPtCr-SiO2 granular medium on a bumpy-surface Ru underlayer to increase perpendicular anisotropy energy Ku⊥ of the media by promoting atomic diffusion in magnetic grains was investigated. At substrate temperature Tsub = 343 oC, magnetic grains epitaxially grew on a flat-surface Ru underlayer. And randomly oriented spherical magnetic grains surrounded by SiO2 were segregated on it. Reason of the surface flattening of the bumpy Ru underlayer was recrystallization of Ru grains promoted by desorption of oxygen from Ru grains. To prevent the oxygen desorption and the recrystallization, CoCr-SiO2 buffer layer was introduced onto the Ru underlayer. Consequently, the bumpy surface morphology of the underlayer is maintained and columnar growth of the granular layer was realized under Tsub < 380 oC. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CoPtCr-SiO2 / Ru / granular media / uniaxial magnetocrystalline anisotropy / heating substrate deposition |
| Paper # | MR2015-9 |
| Date of Issue | 2015-05-28 (MR) |
| Conference Information | |
| Committee | MR / ITE-MMS |
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| Conference Date | 2015/6/4(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Recording Systems, etc. |
| Chair | Masukazu Igarashi(*) / Eiichi Miyashita(NHK) |
| Vice Chair | |
| Secretary | (Syowa Denko) / (Toshiba) |
| Assistant | Fumiko Akagi(Kogakuin Univ.) / Takayuki Shima(AIST) |
| Paper Information | |
| Registration To | Technical Committee on Magnetic Recording / 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) | Microstructure and magnetic properties of CoPtCr-SiO2 granular media deposited at high substrate temperature |
| Sub Title (in English) | |
| Keyword(1) | CoPtCr-SiO2 |
| Keyword(2) | Ru |
| Keyword(3) | granular media |
| Keyword(4) | uniaxial magnetocrystalline anisotropy |
| Keyword(5) | heating substrate deposition |
| 1st Author's Name | Shintaro Hinata |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Kim Kong Tham |
| 2nd Author's Affiliation | Tanaka Kikinzoku Kogyo K. K.(TKK) |
| 3rd Author's Name | Shin Saito |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2015-06-05 |
| Paper # | MR2015-9 |
| Volume (vol) | vol.115 |
| Number (no) | MR-71 |
| Page | pp.pp.55-59(MR), |
| #Pages | 5 |
| Date of Issue | 2015-05-28 (MR) |