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201 Gb/in2 Recording Areal Density on Sputtered Magnetic Tape.
- Source :
- IEEE Transactions on Magnetics; Feb2018, Vol. 54 Issue 2, p1-8, 8p
- Publication Year :
- 2018
-
Abstract
- A prototype perpendicularly oriented sputtered tape sample was investigated using a prototype high-moment tape write head and a 48 nm-wide tunneling magnetoresistive hard disk drive read head. A linear density of 818 kbpi with a post-detection byte-error rate <0.023 was demonstrated based on measured recording data and a software read channel that used an extended version of the noise-predictive maximum-likelihood detection scheme that tracks the mean of the data-dependent noise. Using a previously reported iterative decoding architecture, a user bit-error rate of <1eā20 can be achieved at this operating point. Track-following servo performance characterized by the standard deviation of the position error signal ( $\sigma $ -PES) ā¤ 6.5 nm was also demonstrated over a tape speed range of 1.2ā4.1 m/s. This magnitude of PES in combination with a 48 nm-wide reader enables reliable recording at a track width of 103 nm corresponding to a track density of 246.2 ktpi, for an equivalent areal density of 201.4 Gb/in2. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 54
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- 127532557
- Full Text :
- https://doi.org/10.1109/TMAG.2017.2727822