Dichte und Raumerfüllung bei intermetallischen Verbindungen, insbesondere Laves-Phasen

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Abstract
Formulae are derived for calculating the differences in density between an heterogeneous mixture of elements and an ordered phase of the same chemical composition. The parameters used were the degrees of space-filling of the appropriate crystal lattices and the changes in shortest distances between atoms. The latter magnitude served as a measure of changes in the size of the atoms. A detailed discussion for Laves phases using a previously derived formula for changes in atomic distances shows that an increase in density as compared to the elementary state is characteristic of the group of Laves phases. It may, therefore, be assumed that an increase in stability goes hand in hand with this rise in density.

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