Title :
Large Barkhausen jumps in relaxed Co-rich amorphous alloy ribbons
Author :
Blanco, J.M. ; Domínguez, L. ; Aragonéses, P. ; Gonzalez, Jose
Author_Institution :
Dept. de Fisica Aplicada, Pais Vasco Univ., San Sebastian, Spain
fDate :
9/1/1997 12:00:00 AM
Abstract :
The effect of a previous thermal treatment (370°C, 30 minutes) on the occurrence of a large Barkhausen jump (LBJ) present in the magnetization process of two Co-rich amorphous ribbons treated by means of current annealing has been studied. The LBJ is characterized by an applied magnetic field called the critical field, H*. The stress dependence of H* and reduced remanence, mr allows one to analyze the nature of the LBJ effect which is strongly linked to the magnetoelastic anisotropy arising from the tensile stress (internal or applied) in the ribbons
Keywords :
Barkhausen effect; amorphous magnetic materials; boron alloys; cobalt alloys; ferromagnetic materials; heat treatment; internal stresses; iron alloys; magnetoelastic effects; metallic glasses; remanence; silicon alloys; 30 min; 370 C; CoFeSiB; LBJ effect; applied magnetic field; critical field; current annealing; large Barkhausen jumps; magnetization process; magnetoelastic anisotropy; relaxed Co-rich amorphous alloy ribbons; remanence; stress dependence; tensile stress; thermal treatment; Amorphous magnetic materials; Amorphous materials; Annealing; Internal stresses; Magnetic analysis; Magnetic anisotropy; Magnetization processes; Remanence; Tensile stress; Thermal stresses;
Journal_Title :
Magnetics, IEEE Transactions on
