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Recoilless Fraction in Amorphous and Nanocrystalline FeCuNbSiB System

Published online by Cambridge University Press:  28 December 2012

Monica Sorescu ,
Tianhong Xu  and
Steven Herchko
Monica Sorescu
Affiliation:
Duquesne University, Department of Physics, Fisher Hall, Pittsburgh, PA 15282-0321, USA
Tianhong Xu
Affiliation:
Duquesne University, Department of Physics, Fisher Hall, Pittsburgh, PA 15282-0321, USA
Steven Herchko
Affiliation:
Duquesne University, Department of Physics, Fisher Hall, Pittsburgh, PA 15282-0321, USA
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Abstract

Differential scanning calorimetry, X-ray diffraction, and room temperature Mössbauer spectrum measurements of Fe73.5Cu1Nb3Si13.5B9 (Finemet) alloy have been carried out in order to study its structural and magnetic properties as a function of annealing temperature. The Mössbauer spectra of annealed Finemet alloy could be fitted with 4 or 5 sextets and one doublet at higher annealing temperatures, revealing the appearance of different crystalline phases corresponding to the different Fe sites above the crystallization temperature. The appearance of the nanocrystalline phases at different annealing temperatures was further confirmed by the recoilless fraction measurements. These made use of our recently-developed dual absorber method, which made it possible to determine precisely the recoilless fractions of the amorphous, nanocrystalline and grain boundary phases separately.

Keywords

amorphousannealingmagnetic properties
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1520: Symposium NN – Structure-Property Relations in Amorphous Solids , 2013 , mrsf12-1520-nn02-07
Copyright
Copyright © Materials Research Society 2012

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References

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