Universal features of the equation of state of solids
Abstract
A study of the energetics of solids leads to the conclusion that the equation of state for all classes of solids in compression can be expressed in terms of a universal function. The form of this universal function is determined by scaling experimental compression data for measured isotherms of a wide variety of solids. The equation of state is thus known (in the absence of phase transitions), if zeropressure volume and isothermal compression and its pressure derivative are known. The discovery described in this paper has two immediate consequences: first, despite the well known differences in the microscopic energetics of the various classes of solids, there is a single equation of state for all classes in compression; and second, a new method is provided for analyzing measured isotherms and extrapolating highpressure data from lowpressure (e.g. acoustic) data.
 Publication:

Journal of Physics Condensed Matter
 Pub Date:
 March 1989
 DOI:
 10.1088/09538984/1/11/002
 Bibcode:
 1989JPCM....1.1941V
 Keywords:

 Band Structure Of Solids;
 Equations Of State;
 Solids;
 Compressing;
 Energy Gaps (Solid State);
 Error Analysis;
 Metallic Hydrogen;
 Metals;
 Organic Solids;
 Rare Gases