Changes in the atomic structure through glass transition observed by X-ray scattering

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Cang Fan
  • H. G. Yan
  • H. Q. Li
  • P. K. Liaw
  • T. Egami

Detail(s)

Original languageEnglish
Pages (from-to)111-115
Journal / PublicationIntermetallics
Volume23
Online published21 Jan 2012
Publication statusPublished - Apr 2012

Abstract

The glass transition involves a minor change in the internal energy, and yet the physical and mechanical properties of a glass change dramatically. In order to determine the evolution of the atomic structure through the glass transition, we employed in-situ synchrotron X-ray scattering measurements as a function of temperature on a model material: Zr-Cu-Al metallic glass. We found that the thermal expansion at the atomic level is smaller than the macroscopic thermal expansion, and significantly increases above the glass transition temperature. The observed changes in the pair-distribution function (PDF) are explained in terms of the fluctuations in the local atomic volume and their change through the glass transition. © 2011 Elsevier Ltd. All rights reserved.

Research Area(s)

  • A. Metallic glasses, D. Amorphous structures, atomic clusters, D. Amorphous structures, short-range order, D. Defects: free volume

Citation Format(s)

Changes in the atomic structure through glass transition observed by X-ray scattering. / Fan, Cang; Yan, H. G.; Liu, C. T.; Li, H. Q.; Liaw, P. K.; Ren, Y.; Egami, T.

In: Intermetallics, Vol. 23, 04.2012, p. 111-115.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review