Title :
26.5 Gb/in2 areal-density longitudinal thin film media
Author :
Schultz, Marilee A. ; Malhotra, Sudhir S. ; Lal, Brij B. ; Kimmal, Jay M. ; Russak, Michael A. ; Liu, Francis ; Stoev, Kroum ; Shi, Stone ; Tong, Hua-Ching ; Dey, Subrata
Author_Institution :
Read-Rite Corp., Fremont, CA, USA
fDate :
9/1/2000 12:00:00 AM
Abstract :
A 26.5 Gb/in2 areal-density demonstration was made using low-noise, thermally stable media and advanced dual-spin-valve heads. The demonstration was achieved at a linear density of 504 kbpi, a track density of 52.6 ktpi, and a data transfer rate of 230 Mb/s. The media had Mrt of 0.40 memu/cm2 and coercivity of 2500 Oe, and were composed of a dual-magnetic-layer structure with a five-element magnetic alloy. It was observed that smaller, uniform and isolated magnetic grains are critical to reducing the media noise and for designing ultra-high areal-density recording media that are thermally stable
Keywords :
coercive force; grain size; magnetic heads; magnetic recording noise; magnetic thin films; spin valves; thermal stability; areal density; coercivity; dual magnetic layer structure; dual spin valve head; grain size; linear density; longitudinal thin film medium; magnetic alloy; noise; thermal stability; track density; ultra-high-density magnetic recording; Coercive force; Magnetic films; Magnetic heads; Magnetic properties; Magnetic susceptibility; Magnetization; Signal to noise ratio; Thermal stability; Transistors; Viscosity;
Journal_Title :
Magnetics, IEEE Transactions on
