Ml. Sui et al., STRUCTURAL CHARACTERISTICS OF A NANOCRYSTALLINE FE-CU-NB-SI-B SOFT-MAGNETIC ALLOY, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 182, 1994, pp. 1405-1409
The structures of Fe73.5Cu1Nb3Si13.5B9 alloys annealed in the temperat
ure range 400-600-degrees-C for 30 min are investigated by X-ray diffr
action and positron annihilation spectroscopy. The grain size and the
lattice parameter of the alpha-Fe(Si) phase in the alloys annealed at
different temperatures are determined. The variations of the Si conten
t in die nanocrystalline alpha-Fe(Si) phase with the annealing tempera
tures are obtained for the alloys. With T(a) increasing, the positron
lifetime tau1 and the intensity ratio I1/I2 decrease, which indicates
that the residual amorphous phase is changed in both composition and s
tructure. The relationship between the structural characteristics and
the magnetic properties for the alloys is discussed.