Analysis of the Specific Heat of Ru Doped LiKSO4 Close to Phase Transitions

Abstract

The temperature dependence of the specific heat, C_p, is analyzed for different percentages of ruthenium (Ru) content in LiKSO₄ using a power-law formula deduced from Ising model. For this analysis, data observed are taken from the literature and the values of the critical exponent for C_p are extracted in the vicinity of the transition temperature (T_c = 708 K) within the incommensurate phase of Ru doped LiKSO₄. Obtained values of the critical exponent of C_p confirm in most cases above and below C_p the critical exponent value predicted by the 3D Ising model for the doped LiKSO₄. On this basis, the specific heat, C_p, of some other molecular crystals can also be analyzed using the same power-law formula as studied here.