| Presentation | 2018-12-07 Writing Field Sensitivity in Heat-Assisted Magnetic Recording Tadashi Kobayashi, Yoshinobu Nakatani, Yuji Fujiwara, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Work on increasing writing field sensitivity can be divided into five problems in heat-assisted magnetic recording (HAMR). Although the coercivity can be reduced by any amount during writing in HAMR, a higher writing field is necessary for a higher anisotropy constant ratio, namely, for a higher coercivity. When the damping constant is 0.1, writing is easy. A writing field of about 8 kOe is necessary if we are to realize 4 Tbpsi and a linear velocity of 10 m/s. On the other hand, when the damping constant is 0.01, writing is difficult. We need a writing field of about 12 kOe to achieve 2 Tbpsi and a linear velocity of 5 m/s. If there is a Curie temperature variation, a higher writing field and a higher thermal gradient are necessary. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | write-error / erasure-after-write / statistical problem / damping constant / Curie temperature variation |
| Paper # | MRIS2018-24 |
| Date of Issue | 2018-11-29 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS |
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| Conference Date | 2018/12/6(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Ehime University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Signal Processing and Others |
| Chair | Satoshi Matsunuma(Maxell) / Norihiko Ishii(NHK) |
| Vice Chair | |
| Secretary | (Toshiba) / (Kinki Univ.) |
| Assistant | Ikuya Tagawa(Tohoku Inst. of Tech.) / Hiroko Arai(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) | Writing Field Sensitivity in Heat-Assisted Magnetic Recording |
| Sub Title (in English) | |
| Keyword(1) | write-error |
| Keyword(2) | erasure-after-write |
| Keyword(3) | statistical problem |
| Keyword(4) | damping constant |
| Keyword(5) | Curie temperature variation |
| 1st Author's Name | Tadashi Kobayashi |
| 1st Author's Affiliation | Mie University(Mie Univ.) |
| 2nd Author's Name | Yoshinobu Nakatani |
| 2nd Author's Affiliation | University of Electro-Communications(UEC) |
| 3rd Author's Name | Yuji Fujiwara |
| 3rd Author's Affiliation | Mie University(Mie Univ.) |
| Date | 2018-12-07 |
| Paper # | MRIS2018-24 |
| Volume (vol) | vol.118 |
| Number (no) | MRIS-347 |
| Page | pp.pp.35-40(MRIS), |
| #Pages | 6 |
| Date of Issue | 2018-11-29 (MRIS) |