Different states of local order have been previously measured at room temperature on water quenched crystal of Ni0.76562 Fe0.235 [1−2]. The Cowley’ parameters and the interaction pair potentials in a Clapp and Moss approximation have been determined at: 385° C, 470°C, 507°C, 535°C, 685°C that is under and above Tc which is equal to 500°C for this composition.
The kinetic of long range order establishment is, in this alloy, very sluggish even near Tc ; the kinetic of short range order (SRO) is completely different and may be more complex . In the previous experiments it has been supposed that the state of high temperature was retained during the quench. The following experiments check this hypothesis.
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Lefebvre, S., Bley, F. & Cenedese, P. Determination of Short Range Order Parameters in 62Ni0.765Fe0.235 at 600°C Effect of a Quench. MRS Online Proceedings Library 21, 369–373 (1983). https://doi.org/10.1557/PROC-21-369