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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Das, S. Ito, N. Sugiyama, M. Nakamoto, K. |
| Copyright Year | 1965 |
| Abstract | From the viewpoint of high track-density media design, cross-track performance of medium noise was investigated through micro-magnetic simulation considering a combination of capped media and wrap around shielded writer. For two capped media with different inter-grain exchange coupling A grain, noise in the track-edge region was found to boost the on-track noise level while played-back under realistic read-conditions. Medium having larger A grain exhibited higher track-edge noise due to the formation of larger magnetic cluster at the track-edge region. Furthermore, for the medium with larger A grain, higher track-edge noise was found to increase the noise level along the cross-track direction and shrink the off-track capability of signal-to-noise ratio (SNR). Although both the media exhibited similar track-width, medium showing higher track-edge noise was found to lose SNR while squeezed by a neighboring track. On the other hand, medium having smaller A grain exhibited lower track-edge noise, which was found to be helpful to keep the on-track SNR loss smaller while squeezed at a fixed track-pitch condition. Control of cluster formation through the optimization of A grain should be effective to suppress the track-edge noise. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 3558 |
| Ending Page | 3561 |
| Page Count | 4 |
| File Size | 527844 |
| 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 | Magnetic noise Signal to noise ratio Noise level Micromagnetics Magnetic anisotropy Perpendicular magnetic anisotropy Indium tin oxide Laboratories Magnetic shielding Couplings track-edge noise Cross-track performance exchange coupling magnetic cluster |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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