H. Yoda et al., DUAL-ELEMENT GMR INDUCTIVE HEADS FOR GIGABITS DENSITY RECORDING USINGCOFE SPIN-VALVES/, IEEE transactions on magnetics, 32(5), 1996, pp. 3363-3367
We have succeeded in designing, fabricating, and testing GMR/Inductive
heads. 1 mu m trackwidth CoFe spin-valve read elements showed high se
nsitivity even after head fabrication due to its good thermal stabilit
y. About 1.5 mu m tackwidth a-CoZrNb write elements with Bs (Saturatio
n flux density) of 1.35T fabricated by trench filling process showed h
igh potential for Gbit density recording. As a result of the feasibili
ty study, 18kTPI and 140kBPI are thought to be within the scope by com
bining the dual element heads with low-noise media.