Understanding and optimizing laminated recording media (invited)
We find subnanometer spacer layers are sufficient to decorrelate the transition noise of the layers in laminated longitudinal recording media, thus improving the media signal-to-noise ratio. These results are surprising given that the layers remain structurally correlated due to their epitaxial grow...
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Veröffentlicht in: | Journal of applied physics 2005-05, Vol.97 (10), p.10N109-10N109-6 |
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Hauptverfasser: | , , , , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | We find subnanometer spacer layers are sufficient to decorrelate the transition noise of the layers in laminated longitudinal recording media, thus improving the media signal-to-noise ratio. These results are surprising given that the layers remain structurally correlated due to their epitaxial growth, and therefore the noise in the layers may be expected to be correlated as well. Experimental results suggest that the reduced transition noise is produced by a slight shift between the transition locations in the layers. This shift is created by the recording head and allows the transitions to sample a different microstructure, thus decorrelating the transition noise. |
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ISSN: | 0021-8979 1089-7550 |
DOI: | 10.1063/1.1850812 |