Abstract
It is shown by Mossbauer spectroscopy of the 119Sb(119m Sn) isotope that impurity antimony atoms in PbS, PbSe, and PbTe lattices are distributed between cation and anion sublattices. In n-type samples, the greatest part of antimony is located in the anion sublattice; in hole ones, in the cation sublattice. The tin atoms formed as a result of radioactive decay of 119Sb (antisite state) are electrically inactive in the anion sub-lattice of PbS and PbSe, while, in the cation sublattice, they form donor U − centers. Electron exchange between the neutral and doubly ionized tin U − centers via the allowed band states is observed. The tin atoms formed after radioactive decay of 119Sb are electrically inactive in the anion and cation sublattices of PbTe.
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