Title :
The electrical and magnetic response of yoke-type read heads based on a magnetic tunnel junction
Author :
Coehoorn, R. ; Cumpson, S.R. ; Ruigrok, J.J.M. ; Hidding, P.
Author_Institution :
Philips Res. Lab., Eindhoven, Netherlands
fDate :
9/1/1999 12:00:00 AM
Abstract :
Based on model calculations a comparison is made between yoke-type read heads containing a tunnel junction magnetoresistive element (TMRE) and containing a giant magnetoresistive element (GMRE). For typical head design parameters, TMR-based heads are 3-5 times more flux-efficient than GMR-based heads. However, for approximately 1×1 μm2 elements, the SNR of TMRE-based heads is not advantageous as long as the junction´s tunnel resistance is not drastically reduced below R=1 kΩ
Keywords :
giant magnetoresistance; magnetic heads; magnetic recording noise; magnetoresistive devices; tunnelling; SNR; electrical response; flux efficiency; giant magnetoresistive element; magnetic response; tunnel junction magnetoresistive element; yoke-type read head; Giant magnetoresistance; Magnetic anisotropy; Magnetic flux; Magnetic heads; Magnetic separation; Magnetic tunneling; Perpendicular magnetic anisotropy; Saturation magnetization; Soft magnetic materials; Tunneling magnetoresistance;
Journal_Title :
Magnetics, IEEE Transactions on
