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Abstract
A new analytical form is proposed for the description of experimental data on strong isothermal compression of solids. This form supposes similarity transformations. It is shown that a scale of volume and a scale of pressure can be determined so that the experimental isotherms of solids (H2, MgO, Au, NaCl, diamond, Al, Mo, Cu, Pb) are transformed to a uniform curve up to 300 GPa. The scaling law is proposed for the isothermal bulk modulus of a solid too. A new definition of the ‘high pressure’ for a solid is suggested.
Acknowledgements
This work has been partially supported by the program ‘Physics and mechanics of strongly compressed matter and problems of the internal structure of the Earth and planets’ of the Presidium of the Russian Academy of Sciences.