High-temperature specific heat of icosahedral Al–Cu–Fe and decagonal Al–Ni–Co

Abstract

The high-temperature specific heat, c_p (T), of icosahedral Al–Cu–Fe and decagonal Al–Ni–Co was measured at various temperature ranges between 420 and 1350 K. For both materials, the specific heat increases with increasing temperature, reaching the values that are substantially higher than the Dulong and Petit value. Comparisons are made with previously reported data for icosahedral and decagonal phases.

Keywords:

• quasicrystals
• specific heat

Acknowledgments

We thank J.-M. Dubois for a very useful conversation regarding the high-temperature thermal properties of quasicrystals. This work was supported by the Government programme “High School Potential Development.”