Unusually high vacancy concentrations in Ni3Sb

O. G. Randl, G. Vogl, M. Kaisermayr, W. Bührer, J. Pannetier, W. Petry

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Abstract

The structure of the intermetallic alloy Ni3Sb (the high-temperature phase) has been studied by means of neutron diffraction Alloys with Ni contents between 71 and 75 at.% were examined at temperatures ranging from 600 to 1000 °C. The results confirm DO3 structure as well as the existence of vacancy concentrations of up to 20% of the Ni sites. The high number of vacancies certainly plays a crucial role in stabilizing the DO3 phase; it is also held responsible for the extraordinarily high Ni diffusivity values found in tracer diffusion studies.

Original languageEnglish
Pages (from-to)7689-7698
Number of pages10
JournalJournal of Physics Condensed Matter
Volume8
Issue number41
DOIs
StatePublished - 7 Oct 1996

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