Baonza equation of state

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Baonza, et al formulated an equation based on a linear bulk modulus called the Baonza equation of state[1]. It has a simple analytical form but also gives similar accuracy to the Rose-Vinet (Universal) equation of state. The equation of state is:

\[p=\frac{\gamma B_0}{B_0'}\left[\left(1+B_0'\left(\frac{1}{\gamma}-1\right)ln\left(\frac{V_0}{V}\right)\right)^{1/(1-\gamma)}-1\right]\]

where \(B_0\) is the isothermal bulk modulus, \(B_0'\) is the pressure derivative of the bulk modulus and \(\gamma\) relates the bulk modulus and its pressure derivative via:

\[B=B_0\left(1+\frac{B_0'}{B_0}P\right)^{\gamma}\]

[edit] References

  1. Valentín García Baonza, Mercedes Taravillo, Mercedes Cáceres, and Javier Núñez "Universal features of the equation of state of solids from a pseudospinodal hypothesis", Physical Review B 53 pp. 5252-5258 (1996)
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