Lattice location of Xe in iron

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Abstract
Mössbauer effect following ion implantation of 8.2 d 129m Xe in metallic Fe has been systematically investigated as a function of implanted dose (101 2−101 5 ions/cm2). The significance of these experiments is threefold. (a) These have permitted a reliable measurement of the internal magnetic field H int at the high field site, which is believed to be a substitutional Xe site in the b.c.c. lattice of the host. The H int value was found to be 1480±80 kOe and provides an important calibration point in the systematics of H int at 5s‐p impurities in Fe. (b) The general shape of the spectra were found to be sensitive to the implantation dose. They suggest the existence of a few magnetically inequivalent sites, the population of which are sensitive to implantation conditions such as host temperature and implanted dose. (c) Finally, values of H int at the sites are of interest for purposes of structural identification. There is evidence that these sites may represent Xe lattice locations having one, two, three, etc. vacancies in the near neighbor shell.

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