Domain Wall Propagation in Thin Fe-Rich Glass-Coated Amorphous Wires

摘要

We studied the velocity of domain wall propagation, v, of Fe69SiioBi5C6 micwories with different metallic nucleus diameter, d, and different total diameter, D (aW4 um; D=33 um and d=lS im; D=23 4 fim respectively) in the temperature range between 78 and 300 K and at different frequencies of applied magnetic field, v(H) dependence is essentially not linear, showing significantly higher domain wall mobility, S=dv/dH, at low filed limit. All characteristics, v(H) dependence, S(H) dependence and Hcr are sensitive to the sample geometry, i.e. to the internal stresses.