Magnetic characterization of Fe-Al-B amorphous ribbons obtained by the melt spinning technique

J.A. García; J. Carrizo; L. Elbaile; M. Rivas; R.D. Crespo; J.C. Martínez-García

doi:10.1051/epjconf/20111503003

EPJ

Magnetic characterization of Fe-Al-B amorphous ribbons obtained by the melt spinning technique

J.A. García, J. Carrizo, L. Elbaile, M. Rivas, R.D. Crespo and J.C. Martínez-García

Department of Physics. University of Oviedo, c/ Calvo Sotelo s/n, 33007 Oviedo, Spain

Abstract

The magnetic properties of a new amorphous material obtained by melt spinning technique is presented. The composition of the ribbon is Fe₇₂Al₁₄B₁₄. The bulk hysteresis loops indicates that this ribbon is a soft magnetic material with a magnetic anisotropy along the longitudinal direction of the ribbon and an anisotropy constant of 1860 Jm_-3. The value of the anisotropy is explained on the basis of the formation of directional order. The saturation magnetization results 1.12 T and the coercive field 18 Am_-1. The surface magnetic properties show that the magnetic anisotropy is higher in the wheel-surface than in the air-surface. This result is explained considering the residual stress distribution in this kind of materials.