Abstract
DURING an investigation of platinum-rich alloys in the titanium–platinum binary system an intermediate phase of the composition Pt8Ti was discovered. The crystal structure of this phase has been determined by me1. This arrangement of atoms is of particular interest because of the fact that it is an ordered configuration which is not greatly different from AuCu (ref. 2), Au5Mn2 (ref. 3), and Au4Ti (ref. 4). These phases are characterized by the fact that the location of atoms represents minor deviations from a face-centred cubic solid solution, and also that different species of atoms display a preference for particular crystallographic sites. The ordered phase Pt8Ti exists over a region of homogeneity as does Au4Ti. Furthermore, it is quite interesting to note that the addition of titanium to platinum decreases the lattice parameter of the parent terminal phase. A similar effect was observed in the titanium–gold system5.
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References
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PIETROKOWSKY, P. Novel Ordered Phase, Pt8Ti. Nature 206, 291 (1965). https://doi.org/10.1038/206291a0
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DOI: https://doi.org/10.1038/206291a0
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