期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1972
卷号：69
期号：11
页码：3305-3306
DOI：10.1073/pnas.69.11.3305
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：A general isothermal equation of state for metals and certain other solids [Formula: see text] Where BT0 is the bulk modulus at zero pressure, P is the pressure, and V0 and V are the volumes at zero pressure and pressure P, respectively, has been discovered empirically. The fit to a straight line for twenty metals and twelve metallic halides is within a few percent mean deviation. The rationale leading to this particular relation is that of the Virial Theorem, as applied to those solids for which the potential energy scales as the mean inverse of the inter-atomic distance, and for which on compression the entropy change is small.
