Metallic glasses are expected to have quite tunable structures in their configuration space, without the strict constraints of a well-defined crystalline symmetry and large energy barriers separating different states in crystals. However, effectively modulating the structure of metallic glasses is rather difficult. Here, using complementary in situ synchrotron x-ray techniques, we reveal thermal-driven structural ordering in a Ce65Al10Co25 metallic glass, and a reverse disordering process via a pressure-induced rejuvenation between two states with distinct structural order characteristics. Studies on other metallic glass samples with different compositions also show similar phenomena. Our findings demonstrate the feasibility of two-way structural tuning states in terms of their dramatic ordering and disordering far beyond the nearest-neighbor shells with the combination of temperature and pressure, extending accessible states of metallic glasses to unexplored configuration spaces.

中文翻译：

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金属玻璃中结构顺序的双向调整。

预计金属玻璃在其配置空间中将具有可调谐的结构，而不受严格定义的晶体对称性和大的能垒分隔晶体中不同状态的严格限制。然而，有效地调节金属玻璃的结构是相当困难的。在这里，使用互补的原位同步加速器X射线技术，我们揭示了Ce65Al10Co25金属玻璃中的热驱动结构有序化，以及通过压力诱导的具有不同结构有序特征的两个状态之间的回生而产生的反向无序过程。对其他具有不同成分的金属玻璃样品的研究也显示出相似的现象。