Title :
Magnetic hyperfine field distributions in Fe73.5Cu1 Nb3Si13.5B9
Author :
Sitek, Jozef ; Miglierini, Marcel ; Tóth, Igná;c
Author_Institution :
Dept. of Nucl. Phys. & Technol., Slovak Tech. Univ., Bratislava, Slovakia
fDate :
3/1/1994 12:00:00 AM
Abstract :
The ribbons of amorphous alloy of Fe73.5Cu1Nb3Si13.5B9 were isothermally annealed at the temperature 545°C in the range from 20 minutes up to 120 minutes. Three samples of different thicknesses of 33 μm, 27 μm and 21 μm were used. The obtained nanocrystals were studied by Mossbauer spectroscopy. The amount of remaining amorphous phase and average hyperfine field have been dependent on annealing time. Both these parameters have been decreased more rapidly for a thicker than for the thinner one. In P(H) distribution we observed a growing low field component and a vanishing high field component. The reason for such a different crystallization processes in various samples is the inhomogeneously distributed silicon along the ribbon thickness
Keywords :
Mossbauer effect; annealing; boron alloys; copper alloys; crystallisation; ferromagnetic properties of substances; iron alloys; magnetic properties of amorphous substances; magnetic properties of fine particles; nanostructured materials; niobium alloys; silicon alloys; 21 mum; 27 mum; 33 mum; 545 C; Fe73.5Cu1Nb3Si13.5B 9; Mossbauer spectroscopy; crystallization; hyperfine field; isothermally annealed; nanocrystals; of amorphous ribbons; Amorphous magnetic materials; Amorphous materials; Annealing; Copper alloys; Iron alloys; Nanocrystals; Niobium alloys; Silicon alloys; Spectroscopy; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
