Radioactive Equilibrium of 119mTe/119Sb Isotopes and Mössbauer Spectra of Impurity 119mSn Atoms in Crystalline and Vitreous Chalcogenide Semiconductors

Abstract

Information on the valence and coordination states of the daughter 119mSn atoms formed from the parent 119Sb and 119mTe atoms at the cation and anion sites of crystalline lead chalcogenides (PbS, PbTe) and vitreous arsenic chalcogenides (As2S3, As2Te3) is obtained by the method of emission Mossbauer spectroscopy with the parent 119mTe isotope being in a state of mobile radioactive equilibrium with the daughter 119Sb isotope. It is shown that the ratio of different valence and coordination states of tin atoms in crystals and glasses depends on the time of the preparation of Mossbauer sources. The displacement of a part of the daughter 119Sb atoms from positions of parent 119mTe atoms as a result of the decay of the latter is demonstrated.