Abstract The evolution of the surface morphology of Pt57.5Cu14.7Ni5.3P22.5 bulk metallic glasses thermoplastically formed by replication of SrTiO3 single crystals during heat treatments is investigated by atomic force microscopy. Due to the unique imprinting process, the surface of the bulk metallic glass features a terraced structure with sub-angstrom surface roughness. Upon heating over the material's glass transition temperature, the surface rearranges and relaxes towards a more stable, denser packed glass by smoothening out steps and increasing on-terrace surface roughness. With further increasing annealing temperatures, substantial surface alterations are observed because of increased arrangement kinetics and the onset of crystallization.

中文翻译：

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通过观察退火后原子级平坦的 Pt57.5Cu14.7Ni5.3P22.5 的表面形貌演变来研究弛豫和结晶

摘要 通过原子力显微镜研究了在热处理过程中通过复制SrTiO3 单晶热成型形成的Pt57.5Cu14.7Ni5.3P22.5 块状金属玻璃表面形貌的演变。由于独特的压印工艺，大块金属玻璃的表面具有亚埃表面粗糙度的梯田结构。当加热到材料的玻璃化转变温度以上时，表面会重新排列并松弛，通过平滑台阶和增加台面表面粗糙度来形成更稳定、更致密的填充玻璃。随着退火温度的进一步升高，由于排列动力学的增加和结晶的开始，观察到大量的表面变化。