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Change of D/Tc, Ratio During Heat Treatment of Fe90-xSixB10 Amorphous Alloy

Published online by Cambridge University Press:  26 February 2011

Wladyslaw Minor
Wladyslaw Minor*
Affiliation:
Physics Department, Purdue University, West Lafayette, IN 47907
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Abstract

The ferromagnetic transition temperature Tc for Fe-Si-B amorphous alloys with iron concentration exceeding 75 atomic percent changes monotonically with the annealing time. This change of Tc is accompanied by a drastic change of the magnetic excitation spectrum measured by means of low angle neutron inelastic scattering. It was observed that a small amount of α-Fe(Si) precipitated in an amorphous matrix during the heat treatment even at relatively low temperatures, leading to a decrease of the spin-wave stiffness constant D. Because at the same time T, increases, the D/Tc ratio (which is about 0.3 for “as quenched” Fe-Si-B system) decreases abruptly.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 80: Symposium G – Science and Technology of Rapidly Quenched Alloys , 1986 , 151
Copyright
Copyright © Materials Research Society 1987

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References

On leave from Institute of Experimental Physics, University of Warsaw, Warsaw, PolandGoogle Scholar
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