DC-MAGNETORESISTANCE IN SURFACE CRYSTALLIZED FESIB AMORPHOUS WIRE

Measurements of DC-magnetoresistance (MR), axial and circular magnetiz ation versus axial and circular field in surface crystallized Fe77.5Si 7.5B15 amorphous wire are presented. Negative longitudinal MR immediat ely under saturation has been observed. It has been found that a relat ively strong transverse domain-wall contribution is present in these s amples. On the basis of this fact, supposing some distribution of easy axes relative to the circular direction, an interpretation of the neg ative MR has been proposed. Changes in the number of transverse domain walls during magnetic reversal are supposed in the corresponding mode l.