29.5- \hbox^ Recording Areal Density on Barium Ferrite Tape

• Published in: IEEE transactions on magnetics Vol. 47; no. 1; pp. 137 - 147
• Main Authors: Cherubini, Giovanni, Pantazi, Angeliki, Rothuizen, Hugo E., Berman, David, Imaino, Wayne, Jubert, Pierre-Olivier, McClelland, Gary, Koeppe, Peter V., Tsuruta, Kazuhiro, Harasawa, Takeshi, Murata, Yuto, Cideciyan, Roy D., Musha, Atsushi, Noguchi, Hitoshi, Ohtsu, Hiroki, Shimizu, Osamu, Suzuki, Ryota, Dellmann, Laurent, Eleftheriou, Evangelos, Haeberle, Walter, Jelitto, Jens, Kartik, Venkataraman, Lantz, Mark A., Olcer, Sedat
• Format: Journal Article
• Language: English
• Published: IEEE 01-01-2011
• Subjects: Field programmable gate arrays; Magnetic heads; Magnetic recording; magnetic tape recording; Media; Rough surfaces; Servomotors; signal detection; Surface roughness; tracking
• 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-μm -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 Gb/in 2 . This result demonstrates the scalability and extendability of tape technology using low-cost particulate media.