Abstract
Mossbauer emission spectroscopy on the isotope 119m Te(119m Sn) is used to identify tin impurity centers in PbTe and PbS lattices. Using the emission variant of Mossbauer spectroscopy makes it possible to stabilize the tin impurity atoms in the anion sublattice, i.e., to obtain antistructural defects. The charge state of the tin impurity atoms displaced from the anion sublattice is found to depend on the position of the Fermi level.
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