Of heat capacity at homologous temperatures for metals showing h.c.p.⇌b.c.c. transformation

Abstract

Some interesting aspects of the temperature dependence of the Planck’s function Φ and heat capacities of metals exhibiting the h.c.p. ⇌ b.c.c. transformation have been brought to light by the use of reduced temperature (T*) and Planck's function (-ΦT*). It has been shown that tangents drawn to the -ΦT* vs T* plots of these metals at any chosen value of T* intersect at a point whose coordinates are defined by the slope and intercept of Φ vs entropy plots at any homologous temperature and the selected T* value. A generalized expression obtained for the temperature dependence of Φ has been used to demonstrate that the heat capacity of these metals may be visualized to have structural and material components.