Abstract
In this study, the influence of two nanoscale parameters (e.g., ratios of energy and width of two different interfaces) and temperature have been investigated which drastically affects the formation of interfacial melt during solid-solid phase transformations in energetic Octogen crystal. For different critical values of these parameters and depending on the energy barrier of the solid-melt interface, the appearance of propagating interfacial melt can be either continuous-reversible without the hysteresis or jump-like first-order discontinuous transformation with hysteresis. It is found that these nanoscale parameters significantly affect the phase transformation mechanism, induces different scale effects, and changes the nanoscale behavior of octogen crystal.
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