A Zr-based bulk metallic glass of Zr70Ni20Al10 has an excellent glass-forming ability (GFA), and can form a massive bulk glass by simple water-quenching. In order to clarify the role of electronic structure in this excellent GFA of Zr70Ni20Al10 glass by comparing to the Zr70Ni30 reference glass, having a worse GFA, valence-band photoemission spectra were measured with changing the incident photon energy using synchrotron radiation at BL7 of HiSOR. We have also measured Ni 3p, Zr 3d and Zr 4p core-level photoemission spectra of the Zr70Ni20Al10 glass, and compared them to those of the Zr70Ni30 reference glass. The shifts of the binding energies in every core-level are observed, indicating changes of the chemical nature by replacing the Ni atoms with Al atoms.
[1]
A. Inoue,et al.
Zr–Al–Ni Amorphous Alloys with High Glass Transition Temperature and Significant Supercooled Liquid Region
,
1990
.
[2]
S. Nagel,et al.
Nearly-Free-Electron Approach to the Theory of Metallic Glass Alloys
,
1975
.
[3]
A. Inoue,et al.
Effect of Al on Local Structures of Zr-Ni and Zr-Cu Metallic Glasses
,
2005
.
[4]
Y. Tezuka,et al.
Electronic structure of Pd42.5Ni7.5Cu30P20, an excellent bulk metallic glass former: Comparison to the Pd40Ni40P20 reference glass
,
2007
.
[5]
孝之 鈴木,et al.
バルク金属ガラスZr-TM-Al (TM=Ni, Cu) の電子構造
,
2006
.