Abstract
By means of Mössbauer spectroscopy we studied the structural order in a series of stoichiometric Fe foils, which had been given different heat treatments. The long-range-order parameter was determined with an accuracy of ±0.02 by analyzing the profiles of the outer lines of absorption spectra, recorded at room temperature. From the analysis it appeared that the hyperfine field at nuclei depends linearly on the numbers of iron atoms in the first and second neighboring shell, and that contributions from more distant atoms are negligible. Further anisotropic hyperfine interactions in Fe are small. A comparison with as determined from x-ray diffraction indicates that the wrongly placed atoms in partly ordered Fe are distributed at random over the lattice sites.
- Received 13 December 1976
DOI:https://doi.org/10.1103/PhysRevB.16.985
©1977 American Physical Society