Domain wall dynamics of magnetically bistable microwires

V. Zhukova, J.M. Blanco, M. Ipatov, A. Zhukov
2012 EPJ Web of Conferences  
We studied domain wall propagation of magnetically-bistable Fe-Co-rich microwires paying attention on effect of applied and internal stresses. We measured hysteresis loops and domain wall propagation in various magnetic Fe-Co-rich amorphous microwires with metallic nucleus diameters (from 12 m till 22 m) using Sixtus Tonks-like experiments. Application of tensile stresses results in decreasing of domain wall velocity. We discussed magnetoelastic contribution in dynamics of domain wall
more » ... main wall propagation. We observed, that microwires with different geometries exhibit v(H) dependences with different slopes. Application of stresses resulted in decrease of DW velocity, v, and DW mobility S. Quite fast DW propagation (v till 2500 m/s at H about 30 A/m) has been observed in low magnetostrictive magnetically bistable Co 56 Fe 8 Ni 10 Si 110 B 16 microwires. Consequently, we can assume that generally magnetoelastic energy affects DW dynamics: decreasing magnetoelastic energy, K me , DW velocity increases. a
doi:10.1051/epjconf/20122900036 fatcat:6yqz7yksfvbmrgv5dielnnbvoq