Dependence of the Elastic Moduli of Skutterudites on Density and Temperature

Abstract

The dependency of Young’s and shear modulus on relative density and temperature was determined for three series of skutterudites: p-type MmyFe3CoSb12 (y = 0.70, 0.80), p-type DDyFe3CoSb12 (y = 0.65, 0.68) and n-type Sr0.07Ba0.07Yb0.07Co4Sb12. For all three groups of materials the dependency of Young’s modulus, E, on the density and temperature is linear: E(d) = 4.1(1)×d – 268(3) GPa (d is the relative density in %), ΔE/ΔT = 0.20(1) GPa/K, thus allowing extrapolation of E as a function of temperature and towards 100% density.

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Rogl, G., Puchegger, S., Zehetbauer, M. et al. Dependence of the Elastic Moduli of Skutterudites on Density and Temperature. MRS Online Proceedings Library 1325, 313 (2011). https://doi.org/10.1557/opl.2011.845

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