Direct measurement of the slow alpha-relaxation modes of a metallic liquidnear the glass transition

Modulated-temperature calorimetry measurements on the bulk glass-forming Pd 40Ni40P20 alloy yielded the complex specific heat response of the deeply un dercooled melt near the static glass transition. The imaginary contribution s to the complex signal give direct access to the spectrum of slow alpha -r elaxation modes of the undercooled liquid state that are frozen in upon vit rification. The results are discussed with respect to the kinetics of the g lass transition and compared to results obtained from static equilibrium me asurements. (C) 2001 American Institute of Physics.