29.5- hbox Gb / in 2 Recording Areal Density on Barium Ferrite Tape

• Published in: IEEE transactions on magnetics 2011-01, Vol.47 (1), p.137-147
• Main Authors: Cherubini, Giovanni, Cideciyan, Roy D, Dellmann, Laurent, Eleftheriou, Evangelos, Haeberle, Walter, Jelitto, Jens, Kartik, Venkataraman, Lantz, Mark A, Olcer, Sedat, Pantazi, Angeliki, Rothuizen, Hugo E, Berman, David, Imaino, Wayne, Jubert, Pierre-Olivier, McClelland, Gary, Koeppe, Peter V, Tsuruta, Kazuhiro, Harasawa, Takeshi, Murata, Yuto, Musha, Atsushi, Noguchi, Hitoshi, Ohtsu, Hiroki, Shimizu, Osamu, Suzuki, Ryota
• Format: Article
• Language: English
• Subjects: Barium compounds; Channels; Density; Ferrites; Friction; Recording; Standard deviation; Waveforms
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2010.2076797

The recording performance of a new magnetic tape based on ultra-fine, perpendicularly-oriented BaFe particles was investigated. Specifically, using a low lateral tape motion demonstration platform, a new servo pattern written on the advanced perpendicularly oriented BaFe medium, a new low friction head technology, a novel synchronous servo channel design, and advanced servo control concepts, we were able to demonstrate a record closed-loop track-follow performance with a 23.4 nm standard deviation of position-error signal, roughly one order of magnitude better than in current tape products. In addition, using read back waveforms captured on the same advanced perpendicularly oriented BaFe medium with a 0.2- mu hbox m -wide data reader, we demonstrated write/read performance at 518 kbpi using advanced noise-predictive maximum likelihood (NPML) detection schemes. Combining these two results, we estimate that the new medium can support an areal recording density of up to 29.5 hbox Gb / in 2 . This result demonstrates the scalability and extendability of tape technology using low-cost particulate media.