Naslov
Electronic structure and glass forming ability in early and late transition metal alloys

Autori
Babić, Emil ; Ristić, Ramir ; Figueroa, Ignacio ; Pajić, Damir ; Skoko, Željko ; Zadro, Krešo

Izvornik
Philosophical magazine. Part A: Materials Science (1478-6435) 98 (2018), 8; 693-709

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Metallic glasses ; Magnetic properties ; Transition metals

Sažetak
A correlation between the change in magnetic susceptibility (Δχexp) upon crystallization of Cu-Zr and Hf metallic glasses (MG) with their glass forming ability (GFA) observed recently, is found to apply to Cu-Ti and Zr-Ni alloys, too. In particular, small Δχexp, which reflects similar electronic structures, ES, of glassy and corresponding crystalline alloys, corresponds to high GFA. Here, we studied Δχexp for five Cu-Ti and four Cu-Zr and Ni-Zr MGs. The fully crystalline final state of all alloys was verified from X-ray diffraction patterns. The variation of GFA with composition in Cu-Ti, Cu- Zr and Cu-Hf MGs was established from the variation of the corresponding critical casting thickness, dc. Due to the absence of data for dc in Ni-Zr MGs their GFA was described using empirical criteria, such as the reduced glass transition temperature. A very good correlation between Δχexp and dc (and/or other criteria for GFA) was observed for all alloys studied. The correlation between the ES and GFA showed up best for Cu-Zr and NiZr2 alloys where direct data for the change in ES (ΔES) upon crystallization are available. The applicability of the Δχexp (ΔES) criterion for high GFA (which provides a simple way to select the compositions with high GFA) to other metal-metal MGs (including ternary and multicomponent bulk MGs) is briefly discussed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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