Universal features of the equation of state of solids
Universal features of the equation of state of solids
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DOI：
10.1088/0953-8984/1/11/002
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发表时间：
1989-03
期刊：
影响因子：
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通讯作者：
Pascal Vinet;J. H. Rose;J. Ferrante;John R. Smith-
中科院分区：
文献类型：
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作者：
Pascal Vinet;J. H. Rose;J. Ferrante;John R. Smith-
对固体能量学的研究得出这样的结论：所有类别固体在压缩状态下的状态方程都可以用通用函数来表示。该通用函数的形式是通过密封各种固体的测量等温线的实验压缩数据来确定的。如果零压力体积和等温压缩及其压力导数已知，则状态方程是已知的（在没有相变的情况下）。作者描述的发现有两个直接后果：首先，尽管各类固体的微观能量学存在众所周知的差异，但所有类别的压缩状态都有一个单一的状态方程；其次，提供了一种新方法来分析测量的等温线并从低压（例如声学）数据推断高压数据。
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 sealing 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 zero-pressure volume and isothermal compression and its pressure derivative are known. The discovery described by the authors 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 analysing measured isotherms and extrapolating high-pressure data from low-pressure (e.g. acoustic) data.