Analysis of the Specific Heat of Ru Doped LiKSO 4 Close to Phase Transitions

摘要

The temperature dependence of the specific heat, C ~( p ), is analyzed for different percentages of ruthenium (Ru) content in LiKSO~(4)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 LiKSO~(4). 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 LiKSO~(4). 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.