]]emisphcrica] total cmissivity and spccif]c heat capacity of deeply undcrcoo]cd Zr41.2Ti1308(h12,5Ni10.0Be22$5 melts

High-temperature high-vacuum electrostatic levitation (H’I’H VESL) and differential scanning calorimetry (DSC) were combined to determine the hemispherical total emissivity, ET, and the specific heat capacity, CP, of the undercooked liquid and throughout the glass transition of the Zr4 1.2Ti138CU] 2,5Ni100Be225 bulk metallic glass forming alloy. The ratio of cp/&T as a function of undercooking was determined from radiative cooling curves measured in the IITHVESL. Using specific heat capacity data obtained by DSC investigations close to the glass transition and above the melting point, &T and ~ were separated and the specific heat capacity of the whole undercooked liquid region was determined. Furthermore, the hemispherical total ernissivity of the liquid was found to be about 0.22 at 980 K. C)n undercooking the liquid, the emissivity decreases to approximately 0,18 at about 670 K, where the undercooked liquid sta]ts to fieezc to a glass. No significant changes of the emissivity are observed as the alloy undergoes the glass transition. PACS numbers: 0.6,, 44.,64.70.-p, 81.40.T