Research ArticleCONDENSED MATTER PHYSICS

Vitrification decoupling from α-relaxation in a metallic glass

See allHide authors and affiliations

Science Advances  24 Apr 2020:
Vol. 6, no. 17, eaay1454
DOI: 10.1126/sciadv.aay1454
  • Fig. 1 Reversing specific heat as a function of temperature and frequency in relation to mechanical compliance.

    Frequency-dependent response for the Au49Cu26.9Si16.3Ag5.5Pd2.3 glass former: (Top) Reversing specific heat as a function of temperature obtained from step response analysis at 1 Hz by FSC. The lines show the glass and liquid reversing specific heat taken from (17). The inset shows the normalized reversing specific heat as a function of temperature at frequencies from 1 to 80 Hz. (Bottom) Real part of the mechanical compliance as a function of temperature obtained from dynamic mechanical analysis (DMA) at 1 Hz taken from (36).

  • Fig. 2 Heat flow rate for Au49Cu26.9Si16.3 Ag5.5Pd2.3 as a function of temperature upon heating with 1000 K/s after cooling at the indicated rates in the range from 1000 to 0.1 K/s.

    The inset is a magnification in the glass transition region.

  • Fig. 3 Time scale of vitrification extracted from Tf data (filled orange stars) and relaxation time τ (filled green circles) as a function of the inverse of temperature obtained by FSC for Au49Cu26.9Si16.3Ag5.5Pd2.3 glass.

    Additional relaxation time values from literature are displayed with open symbols based on XPCS (hexagons) (43), DMA (triangles) (36, 43), and enthalpy recovery studies after isothermal annealing (diamonds) (17).

Supplementary Materials

  • Supplementary Materials

    Vitrification decoupling from α-relaxation in a metallic glass

    Xavier Monnier, Daniele Cangialosi, Beatrice Ruta, Ralf Busch, Isabella Gallino

    Download Supplement

    This PDF file includes:

    • Sections S1 to S7
    • Figs. S1 to S7

    Files in this Data Supplement:

Stay Connected to Science Advances

Navigate This Article