Acoustic Shock Wave-Induced Amorphous to Crystalline Phase Transitions of LiSO─Raman Spectroscopic and Thermal Calorimetric Approach.

In this context, we have reexamined the acoustical shock wave-induced amorphous-glassy-crystalline-amorphous phase transitions in the LiSO sample under 0, 1, 2, and 3 shocked conditions by implementing the detailed Raman spectroscopic approach. The recorded Raman spectroscopic data clearly reveal that the transition from the amorphous-glassy-crystalline state occurs because of a significant reduction of the translational disorder of lithium cations, particularly [Li (2)] ions wherein a slight reduction of the librational disorder of SO anions takes place, whereas the crystalline to amorphous transition occurs only at the third shocked condition because of the librational disorder of SO anions. The double degenerate υ and υ Raman modes provide a clear indication of the occurrence of the librational disorder of SO anions at the third shocked condition.