CIRCULAR MAGNETIZATION AND MAGNETORESISTANCE IN SOME CO-BASED AMORPHOUS-ALLOYS

Low-field longitudinal magnetoresistance and corresponding circular ma gnetization (Matteucci effect) hysteresis loops in Co-based amorphous ribbons with induced transverse in-plane easy axis have been measured. The observed loops show the role of a SDEA (Small Deviation of the Ea sy Axis) from the transverse direction, created by torsion stress in l ow-magnetostrictive ribbon. The typical shape of the circular magnetiz ation loops in annealed (Co0.9Fe0.05Ni0.05)75Si15B10 alloy, when dc-el ectric current is flowing through the ribbon is well as the increase o f the resistance in the near zero-field region have been observed and explained on the basis of the distribution of a SDEA from the transver se direction along the ribbon length.