Properties of binary tin chalcogenides determined by Mossbauer spectroscopy

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Abstract
The parameters of the resonance absorption of the 23.8 keV γ quanta emitted by 119+Sn were measured in the temperature range of 78 to 300°K for the chalcogenides of tin: SnS, SnSe, and SnTe. Measurements of the width at half‐height, quadrupole interactions, and chemical isomer shifts are used to analyze the properties of the chemical bonds and the structures of the investigated compounds. The temperature dependence of the probability of resonance absorption fa is correlated with the phonon spectrum of these semiconductors. The behavior of the fa and Γexp values and the appearance of an electric field gradient in SnTe at low temperature suggest the existence of a phase transition at about 160°K.