Abstract
We report a theoretical study of the temperature-dependent magnetic contributions to the free enthalpy, entropy, and enthalpy of vacancy migration for a kagomé ferromagnetic Ising system. The a priori knowledge of the exact solutions of spin correlations for the perfect kagomé structure enables us to determine the thermodynamic functions at all temperatures. The entropy and enthalpy diverge at the critical temperature Tc, whereas the free enthalpy shows rapid change around the critical temperature and remains finite up to very high temperatures.
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