Site-specific long-range order in 57Fe3Al measured by Mössbauer diffractometry

摘要: Mossbauer powder diffractometry was used to study puerility ordered 57 Fe 3 Al. The intensities of fundamental and superlattice Bragg diffractions were measured at 89 Doppler velocities through all nuclear resonances in the sample. measurements analysed provide data on long-range order atoms having different numbers Al neighbours. Energy spectra radiations calculated with both kinematic theory dynamic theory. Comparing experimental calculations showed that three five as first-nearest neighbours (INNS) have partial sc order, similar four lNNs. two lNNs had fcc zero lNN. No evidence found for B32 any environments.