Abstract
In this letter, it is pointed out that an ideal universal equation of state (EOS) of solidsshould have four merits. The EOS corresponding to the generalized Lennard-Jones (GLJ)potential is derived. It is pointed out that the GLJ EOS is not volume analytic, as theexponents contained in the potential function take arbitrary values. On making theexponents satisfy a relationship, the GLJ EOS becomes volume analytic withtwo parameters (mGLJ EOS), and has all four merits. By applying six EOSs ininvestigating 50 materials, it is shown that the mGLJ EOS gives the best results.
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