Abstract

The arrangement of atoms in the metastable Mn3Bi derived in the precedent paper (Yoshida, K. et al.: Acta Metall., 34, 964, 1986) is re-examined by postulating several structure models deviating from the basic one and by making full use of computer simulation of their high resolution electron mlcrographs. Electron diffraction intensities are compared between the observed and calculated ones, both in kinematical and dynamical approximation. Lattice images are calculated also for the models and are compared with the experimentally observed images. The results show that no corrections are necessary in the predetermined structure if interstitial Mn atoms, up to 10% of the occupation probability, exist in its vacant spaces.

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