Recording Physics, Design Considerations, and Fabrication of Nanoscale Bit-Patterned Media
2008; Institute of Electrical and Electronics Engineers; Volume: 7; Issue: 4 Linguagem: Inglês
10.1109/tnano.2008.920183
ISSN1941-0085
AutoresDmitri Litvinov, Vishal Parekh, E Chunsheng, D. Smith, James Rantschler, Paul Ruchhoeft, D. Weller, Sakhrat Khizroev,
Tópico(s)Copper Interconnects and Reliability
ResumoRecording physics, design considerations, and fabrication of bit-patterned magnetic medium for next generation data storage systems is presented. (Co/Pd) $_N$ magnetic multilayers are evaluated as candidates for bit-patterned medium recording layer materials for their high and easily tunable magnetic anisotropy. The optimized patterned multilayers used in this study had coercivities in excess of 12–14 kOe. Bit patterning was accomplished using ion-beam proximity printing, a high-throughput direct write lithography where a large array of ion beamlets shaped by a stencil mask is used to write an arbitrary device pattern. It is found that the nature of magnetization reversal strongly depends on bit edge imperfections and is likely to contribute to switching field distribution.
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