Structural behavior of Pd40Cu30Ni10P20 bulk metallic glass below and above the glass transition

N. Mattern, H. Hermann, S. Roth, J. Sakowski, M.P. Macht, P. Jovari, Jianzhong Jiang

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Abstract

The thermal behavior of the structure of Pd40Cu30Ni10P20 bulk metallic glass has been investigated in situ through the glass transition by means of high-temperature x-ray synchrotron diffraction. The dependence of the x-ray structure factor S(q) of the Pd40Cu30Ni10P20 glass on temperature follows the Debye theory up to the glass transition with a Debye temperature theta=296 K. Above the glass transition temperature T-g, the temperature dependence of S(q) is altered, pointing to a continuous development of structural changes in the liquid with temperature. The atomic pair correlation functions g(r) indicate changes in short-range-order parameters of the first and the second neighborhood with temperature. The temperature dependence of structural parameters is different in glass and in supercooled liquid, with a continuous behavior through the glass transition. The nearest-neighbor distance decreases with temperature, changing the slope at T-g. The interatomic distances of higher coordination shells expand analogously to the macroscopic linear thermal expansion.
Original languageEnglish
JournalApplied Physics Letters
Volume82
Issue number16
Pages (from-to)2589-2591
ISSN0003-6951
DOIs
Publication statusPublished - 2003

Bibliographical note

Copyright (2003) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

  • ALLOYS
  • LIQUID

Cite this

Mattern, N., Hermann, H., Roth, S., Sakowski, J., Macht, M. P., Jovari, P., & Jiang, J. (2003). Structural behavior of Pd40Cu30Ni10P20 bulk metallic glass below and above the glass transition. Applied Physics Letters, 82(16), 2589-2591. https://doi.org/10.1063/1.1567457