Dz. Lu et Jg. Zhu, MICROMAGNETIC ANALYSIS OF PERMANENT-MAGNET BIASED NARROW TRACK SPIN-VALVE HEADS, IEEE transactions on magnetics, 31(6), 1995, pp. 2615-2617
We have performed a micromagnetic modeling analysis of an abutted perm
anent magnet longitudinal biased spin valve head, In this design, the
linear dynamic range of the head output is essentially unchanged with
decreasing track width down to 0.5 mu m. Optimizing sensor height can
yield significant signal enhancement, It has been found that the pinni
ng field on the pinned layer of the spin valve structure has to be gre
ater than a critical value, below which the output will decrease rapid
ly with decreasing the pinning field, while above that the signal outp
ut remains essentially unchanged, Well defined cross-track performance
is found for this head design.