文摘
We study the fragile-to-strong (F鈥揝) transition of metallic glass-forming liquids (MGFLs) by measuring the thermal response during annealing and dynamic heating of La55Al25Ni5Cu15 glass ribbons fabricated at different cooling rates. We find that the glasses fabricated in the intermediate regime of cooling rates (15鈥?5 m/s) exhibit an anomalous crystallization behavior upon reheating as compared to the glasses formed at other cooling rates. This anomalous crystallization behavior implies the existence of a thermodynamic F鈥揝 transition, could be used as an alternative method for detecting the F鈥揝 transition in MGFLs, and sheds light on the structure origin of the F鈥揝 transition. This work also contributes to obtaining a general thermodynamic picture of the F鈥揝 transition in supercooled liquids.