8-Tb/in^2-Class Bit-Patterned Medium for Thermally Assisted Magnetic Recording.
In: IEEE Transactions on Magnetics, Jg. 49 (2013-07-01), Heft 7, S. 3612-3615
Online
academicJournal
Zugriff:
Three-dimensional optical/thermal spot profiles obtained by thermally assisted magnetic recording (TAMR) on bit-patterned media (BPM) with dot densities of 6 to 15 Tb/in^2 were numerically analyzed. Introduction of a spacing layer with higher thermal conductivity than that of the recording dots leads to narrow temperature distribution (i.e., steep temperature profile) in the dots. A temperature profile with FWHM of less than 5 nm was obtained on a patterned dot array under areal densities of 6 to 15 Tb/in^2. In addition, introduction of a thermal-control layer beneath the recording layer decreased vertical temperature difference within a recording bit while keeping a narrow temperature distribution. Feasibility of 8-Tb/in^2-class TAMR on a BPM was verified by LLG simulation with a triangular antenna-type near-field optical element. [ABSTRACT FROM AUTHOR]
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Titel: |
8-Tb/in^2-Class Bit-Patterned Medium for Thermally Assisted Magnetic Recording.
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Autor/in / Beteiligte Person: | Ushiyama, Junko ; Akagi, Fumiko ; Ando, Ayano ; Miyamoto, Harukazu |
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Zeitschrift: | IEEE Transactions on Magnetics, Jg. 49 (2013-07-01), Heft 7, S. 3612-3615 |
Veröffentlichung: | 2013 |
Medientyp: | academicJournal |
ISSN: | 0018-9464 (print) |
DOI: | 10.1109/TMAG.2013.2242442 |
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