Title :
GMR head side-reading and bit aspect ratio
Author :
Wiesen, Kurt ; Cross, Bill
Author_Institution :
Maxtor Corp., Longmont, CO, USA
Abstract :
The surface potentials for shield configurations representative of typical giant magnetoresistive heads are approximated using conformal mapping. These solutions are used in a simplified reciprocity calculation to estimate the dependence of magnetic read width on bit aspect ratio. The growth of magnetic read width due to side reading is likely to counter any signal-to-noise ratio benefits to lowering bit aspect ratio below a value of about 5.
Keywords :
giant magnetoresistance; magnetic heads; bit aspect ratio; conformal mapping; giant magnetoresistive heads; magnetic read width; reciprocity calculation; shield configurations; side reading; surface potentials; Closed-form solution; Conformal mapping; Counting circuits; Equations; Geometry; Giant magnetoresistance; Helium; Magnetic heads; Magnetic shielding; Signal to noise ratio;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.816496
