Anomalies in the temperature dependence of the Mossbauer-effect probability for impurity tin nuclei in a 1-2-3 superconducting ceramic
Cherepanov V. M. , Chuev M. A., Yakimov S. S., Goncharov V. Ya. , Smirnov S. A., Bush A. A.
Mossbauer spectroscopy has revealed anomalies in the probability for the Mossbauer effect of impurity tin atoms in a 1-2-3 ceramic as the temperature was scanned. These anomalies are evidence of a softening of the phonon spectrum near 7;~83and7;~190K.