Title :
Considerations in the design of probe heads for 100 Gbit/in2 recording density
Author :
Khizroev, Sakhrat K. ; Bain, James A. ; Kryder, Mark H.
Author_Institution :
Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
Thin film perpendicular playback yoke-GMR heads capable of reading at a density of 100 Gbit/in2 have been designed using 3D boundary element reciprocity modeling. Two basic head types are considered, a single-pole and a ring-type geometry. The influence on the playback voltage and D50 of the throat height, fly height, and permeability are studied. Isolated pulse response, roll-off curves, and off-track profiles are calculated. Media with and without a soft underlayer are also considered. The simulations show that of the designs studied the ring head in combination with the media without a soft underlayer has playback properties suitable for this density
Keywords :
boundary-elements methods; giant magnetoresistance; magnetic heads; magnetic thin film devices; magnetoresistive devices; perpendicular magnetic recording; 3D boundary element reciprocity model; design; fly height; high density recording; off-track profile; permeability; playback voltage; pulse response; ring head; roll-off curve; single-pole head; soft underlayer; thin film perpendicular playback yoke-GMR head; throat height; Conductivity; Data storage systems; Geometry; Giant magnetoresistance; Image sensors; Magnetic heads; Magnetic sensors; Permeability; Perpendicular magnetic recording; Probes; Transistors; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
