Al-Jawad, M and Kilcoyne, SH 2008, 'Temperature dependent crystallization of amorphous Y67Fe33 studied using kinetic small angle neutron scattering' , Journal of Physics Condensed Matter, 20 , pp. 395230-395234.

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Abstract

Temperature-resolved small angle neutron scattering (SANS) has been used to study the nucleation, growth kinetics and crystallite morphology in the Y–Fe system. Crystallization from amorphous Y67Fe33 to the YFe2 Laves phase via a novel ‘YFe’ intermediate phase has been followed to completion as a function of temperature from 180 to 500 ◦C. The SANS results agree well with published kinetic neutron diffraction data. Below 390 ◦C, diffraction data suggest that SANS arises solely from the contrast between crystalline Y and the Fe-rich amorphous matrix. Between 390 and 410 ◦C all temperature variables are seen to form a sharp peak. This suggests that critical scattering occurs at Tc ≈ 400 ◦C. This critical scattering implies that full crystallization of Y67Fe33 occurs over a very narrow (∼20 ◦C) temperature range.

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