Stress and bias field dependence of initial permeability in amorphous Co/sub 75-x/Fe/sub x/Si/sub 15/B/sub 10/

The behavior of the initial magnetic permeability (/spl musub 1/) of a set of Co/sub 75-x/Fe/sub x/Si/sub 15/B/sub 10/ amorphous ribbons (2/spl les/x/spl les/40) submitted to uniaxial stresses (/spl sigma/) and/or to a dc longitudinal magnetic field is studied in detail. A maximum in the /spl musub 1/ vs. /spl sigma/ curves is observed independently of the sign and absolute value of the magnetostriction constant, and is related to changes in the magnetic domain structure.>