J. Phys. IV France 08 (1998) Pr2-143-Pr2-146
Giant magneto-impedance effect in stress-annealed amorphous ribbonsM. Vázquez1, G.V. Kurlyandskaya1, J.L. Muñoz1, A. Hernando1, N.V. Dmitrieva2, V.A. Lukshina2 and A.P. Potapov2
1 Instituto de Magnetismo Aplicado, UCM-RENFE, and Instituto de Ciencia de Materiales, CSIC, P.O. Box 155, 28230 Las Rozas, Madrid, Spain
2 Institute of Metal Physics, UD RAS, Kovalevskaya str. 18, GSP-170, 620219 Ekaterinburg, Russia
The field dependence of giant magneto-impedance ratio in Fe3Co67Cr3Si15B12 amorphous ribbons with near zero magnetostriction is shown after different stress annealings at temperatures 250 and 350°C. This phenomenon is studied as a function of the amplitude and frequency of the current along the sample. It is concluded that although the strength of the induced anisotropy is quite importante, the fine structure of zig-zag domain walls plays an important role to determine maximum magneto-impedance value.
© EDP Sciences 1998