Title :
Structural and magnetic analysis of amorphous Fe64Co21B15 ribbons
Author :
Ferrara, E. ; Infortuna, A. ; Magni, A. ; Pasquale, M.
Author_Institution :
IEN Galileo Ferraris, Torino, Italy
fDate :
9/1/1997 12:00:00 AM
Abstract :
It is shown that the structural homogeneity and magnetic properties of Fe based amorphous alloys, quenched in different atmospheres, can be properly analyzed using the statistical theory of losses. A homogeneous microstructure can be obtained after etching and annealing treatments and then, according to the statistical theory of losses, only one microstructural parameter V0 is needed to describe the excess loss behavior of each sample. The dependence of this parameter V0 atmosphere and treatment is discussed in terms of the quenched-in stress distribution. The analysis based on magnetic data is shown to be consistent with other structural informations obtained by DSC calorimetry and surface micrography
Keywords :
amorphous magnetic materials; boron alloys; cobalt alloys; etching; ferromagnetic materials; glass structure; internal stresses; iron alloys; magnetic annealing; magnetic leakage; magnetostriction; metallic glasses; soft magnetic materials; DSC calorimetry; Fe based amorphous alloys; Fe64Co21B15; amorphous Fe64Co21B15 ribbons; annealing; etching; excess loss behavior; homogeneous microstructure; losses; magnetic analysis; magnetic properties; microstructural parameter; quenched-in stress distribution; statistical theory; structural analysis; structural homogeneity; surface micrography; Amorphous materials; Annealing; Atmosphere; Etching; Information analysis; Iron alloys; Magnetic analysis; Magnetic properties; Microstructure; Stress;
Journal_Title :
Magnetics, IEEE Transactions on
