Finite size effects in the crystallization of a bulk metallic glass

Manesh Gopinadhan, Zhen Shao, Yanhui Liu, Sundeep Mukherjee, Ryan C. Sekol, Golden Kumar, André D. Taylor, Jan Schroers, Chinedum O. Osuji

Research output: Contribution to journalArticle

Abstract

We explore finite size effects in the crystallization of a bulk metallic glass with nm-scale dimensions. Nanorods of Pt57.5Cu 14.7Ni5.3P22.5 are produced by thermoplastic extrusion of supercooled liquid through a nanoporous template. The nanorods exhibit remarkable differences in their crystallization behavior above the glass transition. Crystallization for 100 and 200 nm diameter nanorods occurred at 6 and 24 °C lower, respectively, than the nominal crystallization temperature for bulk material while the glass transition temperatures were unchanged from the bulk value. Size dependent crystallization kinetics is discussed within a framework of classical nucleation theory, as well as possible shear and surface-induced effects.

Original languageEnglish (US)
Article number111912
JournalApplied Physics Letters
Volume103
Issue number11
DOIs
StatePublished - Sep 9 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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  • Cite this

    Gopinadhan, M., Shao, Z., Liu, Y., Mukherjee, S., Sekol, R. C., Kumar, G., Taylor, A. D., Schroers, J., & Osuji, C. O. (2013). Finite size effects in the crystallization of a bulk metallic glass. Applied Physics Letters, 103(11), [111912]. https://doi.org/10.1063/1.4821032