Abstract
The relation between the intensities of the Mossbauer lines of the ordered alloys and the values of order parameters is analysed. For the case of a Fe3Al type lattice, the probabilities for the occurrence of the various neighbour configurations of the Fe atom are calculated taking into account the correlations in the first and the second coordination shells. These probabilities depend explicitly on the values of the correlation parameters. A general formula is obtained which defines the number of independent order parameters for the alloy with an arbitrary lattice type and composition, for any shell of neighbouring atoms. The complete set of these parameters is shown to determine uniquely the values of long-range order parameters. The conclusion is made that the Mossbauer spectra can be used to evaluate the correlation and long-range order parameters in the ordered alloys. [Russian Text Ignored]
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