Stability and electronic structure of Zr-based ternary metallic glasses and relevant compounds

• Published in: Journal of alloys and compounds Vol. 434; pp. 149 - 151
• Main Authors: Hasegawa, M., Soda, K., Sato, H., Suzuki, T., Taketomi, T., Takeuchi, T., Kato, H., Mizutani, U.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2007
• Subjects: Band calculations; Electronic structure; Metallic glass; Phase stability; Pseudogap; Relevant compound; Band calculations; Relevant compound; Electronic structure; Phase stability; Pseudogap; Metallic glass
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2006.08.277

The electronic structure of the Zr-based metallic glasses has been investigated by theoretical and experimental approaches. One approach is band calculations of the Zr 2Ni (Zr 66.7Ni 33.3) compound to investigate the electronic structure of the Zr 66.7Ni 33.3 metallic glass (Δ T x = 0 K) of which the local atomic structure is similar to that of the Zr 2Ni compound. The other is photoemission spectroscopy of the Zr 50Cu 35Al 15 bulk metallic glass (BMG) (Δ T x = 69 K). Here Δ T x = T x − T g where T x and T g are crystallization and glass transition temperature, respectively. Both results and previous ones on the Zr 55Cu 30Ni 5Al 10 BMG indicate that there is a pseudogap at the Fermi level in the electronic structure of these Zr-based metallic glasses, independent of the value of the Δ T x. This implies that the pseudogap at the Fermi level is one of the factors that stabilize the glass phase of Zr-based metallic glasses.