Based on calculations of the activation process parameters (vacancy formation and self-diffusion) for gold at the temperature range T = 10–1330 K, the correlations of the activation process parameters s i (T) ∼ h i (T) and s i (T) ∼ v i (T), along two isobars. P = 0 and 24 GPa, are studied. Here h i is the enthalpy, s i is the entropy, and v i is the volume of the activation process, i.e. for the formation of an electroneutral vacancy (i = v) or for the self-diffusion of atoms (i = d). It is shown that if, during isobaric heating, an energy less than a certain value (h i < h si) is required to create a defect (vacancy or diffusing atom), or if the resulting defect has a volume less than a certain value (v i < v si), then this defect has a negative entropy, i.e. this defect orders the crystal. However, if a larger energy value is required to create a defect (h i > h si) or this defect has a noticeable volume (v i > v si), then this defect has a positive entropy, i.e. this defect disorders the crystal. It is shown that at a low concentration of defects, they order the crystal, and only starting from a certain concentration (X si) does the defect formation entropy pass into the positive region, where defects disorder the crystal. The changes in the functions of h si , v si , and X si with increasing pressure are studied. Dependence of entropy on the logarithm of the defect formation probability for gold. The two upper curves are for the atom self-diffusion process, and the two lower curves are for the vacancy formation process. Solid curves are isobars P = 0, dashed curves are isobars P = 24 GPa. [Display omitted] • Correlations of entropy on enthalpy and on volume of activation process are studied. • If the defect creating energy is small h < h s , then such a defect orders the crystal. • If a small volume v < v s is needed for a defect, such a defect orders the crystal. • If the concentration of defects is low X < X s , they order the crystal. • The changes of hs , vs , and Xs functions with increasing pressure has been studied. [ABSTRACT FROM AUTHOR]