Title :
Dual-element GMR/inductive heads for gigabits density recording using CoFe spin-valves
Author :
Yoda, H. ; Iwasaki, H. ; Kobayashi, T. ; Tsutai, A. ; Sahashi, M.
Author_Institution :
Res. & Dev. Center, Toshiba Corp., Kawasaki, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
We have succeeded in designing, fabricating, and testing GMR/inductive heads. 1 μm trackwidth CoFe spin-valve read elements showed high sensitivity even after head fabrication due to its good thermal stability. About 1.5 μm trackwidth a-CoZrNb write elements with Bs (Saturation flux density) of 1.35 T fabricated by trench filling process showed high potential for Gbit density recording. As a result of the feasibility study, 18 kTPI and 140 kBPI are thought to be within the scope by combining the dual element heads with low-noise media
Keywords :
cobalt alloys; giant magnetoresistance; iron alloys; magnetic heads; magnetoresistive devices; thermal stability; CoFe; CoFe spin-valve read element; a-CoZrNb write element; dual-element GMR/inductive head; fabrication; gigabits density recording; low-noise media; saturation flux density; sensitivity; thermal stability; trench filling; Amorphous magnetic materials; Fabrication; Giant magnetoresistance; Iron; Magnetic anisotropy; Magnetic heads; Magnets; Perpendicular magnetic anisotropy; Soft magnetic materials; Thermal stability;
Journal_Title :
Magnetics, IEEE Transactions on
