Experimental fabrication demonstrates flyable perpendicular discrete track media using a protective aluminum layer, indicating a damage-free pathway for advanced hard disk drives.
Discrete track media offers many potential recording advantages over conventional continuous media in hard disk drives. In this study, we present a novel fabrication process for discrete track perpendicular magnetic media via electron beam lithography, ion milling, and the use of a protective Al sacrificial layer. Physical characterization of the media confirms the process is able to produce patterned tracks with no damage to the media. Spin stand analysis verifies the disks are flyable and capable of recording sharp transitions without any degradation in the magnetic signal
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Moneck et al. (2007) studied this question.
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