Hyperfine FePt patterned media for terabit data storage

Title
Hyperfine FePt patterned media for terabit data storage
Authors
노진서김현수천동원정원용이우영
Keywords
Recording Media; FePt patterned media; CrV seed layer; Deposition-last process; Perpendicular anisotropy; Magnetic storage
Issue Date
2011-07
Publisher
Current applied physics
Citation
VOL 11, NO 4, s33-s35
Abstract
FePt patterned media were fabricated with varying pattern size, employing a deposition-last process and a CrV seed layer. The FePt patterns of sizes down to 30 nm showed a well-developed FCT structure characteristic of L10 phase. Due to the chemical and structural ordering, even 30 nm-sized FePt patterns exhibited a high ratio (3.4) of out-of-plane coercivity to in-plane coercivity and almost the same remanent magnetization as the saturation magnetization, indicating that a high perpendicular anisotropy is retained in the tiny patterns. The array of 30 nm patterns corresponds to a bit density of 1.8 Tbit/ in2, demonstrating that terabit-density magnetic storage can be fabricated using the deposition-last process.
URI
http://pubs.kist.re.kr/handle/201004/41113
ISSN
1567-1739
Appears in Collections:
KIST Publication > Article
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