“…In our previous work, 1 at.% addition of rare earth Y was found to improve the GFA of Zr-based BMGs effectively and change the first crystallization phase of Zr 53.8 Cu 29.1 Ni 7.3 Al 9.8 BMG from Cu 10 Zr 7 to CuZr 2 , which is beneficial to controlling the crystallization process and preparing bulk nanocrystalline alloys [ 30 ]. Microalloying of rare earth holmium (Ho) element was investigated to show beneficial effects on the GFA of Fe-based and Zr-based metallic glasses [ 26 , 27 , 28 , 29 , 31 , 32 ]. However, the addition of Ho in the literature is minimal and displayed limited understanding of microalloying effects of Ho [ 26 , 27 , 28 , 29 , 32 ].…”