# Thermal diffusivities and molar volumes of ternary $Al_{20}As_{x}Te_{80-x}$ alloy glasses: evidence of self-organization

Manohar, Srirang and Murugavel, S and Asokan, S (2005) Thermal diffusivities and molar volumes of ternary $Al_{20}As_{x}Te_{80-x}$ alloy glasses: evidence of self-organization. In: Solid State Communications, 135 (5). pp. 323-326.

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Thermal diffusivities (\alpha) and molar volumes $(V_{m})$ of bulk $Al_{20}As_{x}Te_{80-x}$ alloy glasses in the composition range 0 \leq x \leq 35 are examined. The results reveal a broad maximum in alpha and a broad minimum in $V_{m}$ in the 15<x<25 range. Earlier temperature modulated differential scanning calorimetric measurements on these glasses have revealed the non-reversing heat flow to show a global minimum(reversibility window) in the same composition range. Taken together these results suggest that present glasses in the 15<x<25 range are self-organized. The thermal diffusivity maximum observed near x=20 is consistent with a minimal scattering of thermal waves in the homogeneous and stress-free glass composition residing in the center of the self-organized phase.