| 1.Research Institution | Tohoku University | |
| 2.University-Industry Cooperative Research Committee | 144th Committee on Magnetic Recording | |
| 3.Term of Project | FY 1999 - FY 2003 | |
| 4.Project Number | 99R14401 | |
| 5.Title of Project | Research on Ultralarge-capacity High-speed Perpendicular Storage System |
| Name | InstitutionCDepartment | Title of Position |
| Yoshihisa,Nakamura | Tohoku University,Research Institute of Electrical Communication | Professor |
7.Core Members
| Names | Institution,Department | Title of Position |
| Yutaka, Sugita | Tohoku Institute of Technology , Faculty of Engineering | Professor |
| Hiroaki , Muraoka | Tohoku University , Research Institute of Electrical Communication | Professor |
| Hisashi, Takano | Central Research Laboratory, Hitachi LTD. | Department Manager |
8.Summary of Research Results
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Purpose of this program is to attain high-areal density magnetic recording of 100 Gbits/inch2 with perpendicular magnetic recording, which has been developed by the JSPS 144th Committee on Magnetic Recording. A single-pole head and perpendicular disk media are the key devices for high density recording. An FeCo film that has a very large magnetic flux density was developed in order to attain high writing ability. A novel cusp-coil single-pole head was then fabricated, and proved to show a good writing ability. A low noise perpendicular media that has the granular micro-structure was also developed. Using the improved head/disk devices, members of this project, Hitachi, Tohoku Univ and AIT, demonstrated 52.5 Gbits/inch2 perpendicular magnetic recording in 2000, which gave a great impact to whole storage industry. The attained areal density has been raised up to 90 Gbits/inch2 during this program. The demonstrations indicated the possibility and extendability of perpendicular magnetic recording. Perpendicular magnetic recording thus provided a great contribution of Japan for this technology area. As an application of high-density perpendicular magnetic recording, a motion picture storage system was investigated from the viewpoint of fast data transfer of hard disk drives. A large capacity motion picture files of medical data were successfully transmitted via internet between Akita and Sendai. |
9.Key Words
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