Static heterogeneity in metallic glasses and its correlation to physical properties

Tetsu Ichitsubo, Hidemi Kato, E. Matsubara, S. Biwa, S. Hosokawa, K. Matsuda, H. Uchiyama, A. Q.R. Baron

研究成果: Article

15 引用 (Scopus)

抜粋

Glasses exhibit intriguing physical and mechanical properties resulting from their structure. We have investigated metal-glass dynamics using inelastic X-ray scattering and ultrasonic techniques for several Pd-, Pt-, and Zr-based glasses with varying fragility. In some cases we have observed a faster phase velocity at short wavelengths than long wavelengths, or positive dispersion. Here we apply elastic wave scattering theory to suggest that the behavior of acoustic phonons can be understood by considering the presence of intrinsic nanoscale elastic inhomogeneity with a certain correlation length, i.e., "static heterogeneity". Furthermore, we suggest that such an elastic inhomogeneity could be the origin of many of the interesting physical and mechanical properties of metallic glasses.

元の言語English
ページ(範囲)494-500
ページ数7
ジャーナルJournal of Non-Crystalline Solids
357
発行部数2
DOI
出版物ステータスPublished - 2011 1 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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