MAGNETOSTRICTION OF Co-Fe-BASED AMORPHOUS SOFT MAGNETIC MICROWIRES

摘要

We present the results on comparative studies of soft magnetic properties and magnetostriction coefficient of Co-Fe-rich microwires. We found that the hysteresis loop as well as the magnetostriction coefficient of Co and Fe-rich microwires depend on internal stresses and can be tailored by annealing. Varying the time and the temperature of annealing we observed changes of the character of hysteresis loops. In the case of Co-rich microwires drastic changes of the hysteresis loop are correlated with change of the sign of the magnetostriction coefficient.