Title :
Effect of current density and stripe height on the amplitude of a dual-synthetic GMR head
Author_Institution :
Read-Rite Corp., Milpitas, CA, USA
fDate :
7/1/2001 12:00:00 AM
Abstract :
The effect of current density and stripe height on the amplitude of a dual-synthetic GMR head is studied experimentally. Heads from the same wafer are lapped to various stripe heights, and their amplitudes are measured using different current densities. It is found that the effect of current density on amplitude is three to four times greater than the effect of stripe height. Consequently, it is inefficient to increase amplitude via stripe height reduction as compared with current density enhancement
Keywords :
giant magnetoresistance; magnetic heads; magnetoresistive devices; amplitude; current density; dual-synthetic GMR head; stripe height; Current density; Current measurement; Density measurement; Electric resistance; Electric variables measurement; Electrical resistance measurement; Lapping; Magnetic heads; Testing; Thermal resistance;
Journal_Title :
Magnetics, IEEE Transactions on
