Title :
Magnetic recording demonstration over 100 Gb/in2
Author :
Zhang, Zhengyong ; Feng, Yong Chang ; Clinton, Tom ; Badran, Gazy ; Yeh, Nan-Hsiung ; Tarnopolsky, Giora ; Girt, Erol ; Munteanu, Mariana ; Harkness, Sam ; Richter, Hans ; Nolan, Tom ; Ranjan, Rajiv ; Hwang, Steve ; Rauch, Gary ; Ghaly, Mai ; Larson, Davi
Author_Institution :
Seagate Technol., Fremont, CA, USA
fDate :
9/1/2002 12:00:00 AM
Abstract :
Areal density growth has enabled hard disk drives to continually fulfill the demands from new enterprise, desktop, and consumer applications. The demonstration of 100 Gb/in2 is another milestone that was achieved recently and is described in this paper. The recording demonstration employed fully integrated magnetic recording heads and thermally stable multilayer antiferromagnetically coupled (AFC) media through a commercially available channel chip. At a track density of 149 ktpi and linear density of 680 kbpi, the achieved off-track capability with 5% track squeeze was 10% of the track pitch, while maintaining a raw bit-error rate (BER) of 10-4 or better. This yielded an areal density of 101 Gb/in2 with measured on-track raw BER of 5×10-5.
Keywords :
disc drives; error statistics; focused ion beam technology; giant magnetoresistance; magnetic heads; magnetic recording; magnetoresistive devices; thermal stability; 101 Gb/in2; areal density growth; commercially available channel chip; focused-ion-beam trimming; fully integrated magnetic recording heads; giant magnetoresistive reader; hard disk drives; linear density; off-track capability; on-track raw BER; raw bit-error rate; thermally stable multilayer antiferromagnetically coupled media; track density; track pitch; track squeeze; Antiferromagnetic materials; Area measurement; Automatic frequency control; Bit error rate; Couplings; Disk recording; Hard disks; Magnetic heads; Magnetic multilayers; Magnetic recording;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.801782
