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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yasumori, J. Sonobe, Y. Greaves, S.J. Muraoka, H. |
| Copyright Year | 1965 |
| Abstract | An embedded servo pattern was fabricated using the ion irradiation method. The servo pattern was analyzed using a spinstand with a flyable read/write head and compared with a conventional medium written by a dedicated servo writer. The embedded servo patterns were clearly detected. The good quality of the servo signal proved the effectiveness of the ion irradiation process. No domain wall noise was observed in the ion-irradiated servo area, indicating the absence of large maze domains. LLG simulations were used to investigate the behavior of written tracks and soft-guard-bands of DTM fabricated by ion irradiation. A conventional continuous medium showed an expansion in the width of written tracks as the continuous layer thickness increased. In DTM, track expansion was prevented by the grooves. According to the simulation results, similar magnetic track widths can be obtained in media with soft-guard-bands as in conventional DTM media with air grooves. The Ku reduction in the grooves should align the magnetization of the irradiated guard band region in-plane to realize a successfully erased guard band. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 3703 |
| Ending Page | 3706 |
| Page Count | 4 |
| File Size | 1049196 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 45 |
| Issue Number | 10 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-10-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Servomechanisms Fabrication Magnetic materials Pattern analysis Magnetization Couplings Coercive force Magnetic domain walls Magnetic heads Signal processing patterned media Discrete-track media ion irradiation magnetic modification |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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