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Fabrication and characterization of contiguous permanent magnet junctions

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3 Author(s)
Min Xiao ; Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA ; Devasahayam, Adrian J. ; Kryder, M.H.

This paper addresses several important issues concerning contiguous permanent magnet biased magneto-resistive sensors. A fabrication process utilizing isotropically etched silicon nitride for lift-off is described, and the optimization of the permanent magnet materials is presented. From the study of resistance vs. trackwidth and sensor height, a component of the resistance inversely proportional to the sensor height is identified. The effective longitudinal bias field is found to decrease with increasing trackwidth

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Magnetics, IEEE Transactions on  (Volume:34 ,  Issue: 4 )