Journal ArticleDOI
Effect of High Pressures on the Compressibilities of Seven Crystals Having the NaCl or CsCl Structure
TLDR
The effect of pressure to several hundred kilobars has been measured on the compressibilities of seven substances having the NaCl (fcc) or CsCl (sc) structure as discussed by the authors.Abstract:
The effect of pressure to several hundred kilobars has been measured on the compressibilities of seven substances having the NaCl (fcc) or CsCl (sc) structure. These include NaCl, KCl, CsCl, MgO, CaO, CaS, and TlI. For the first four crystals a Born—Mayer treatment involving the Madelung energy, van der Waals' terms, and an exponential repulsion (with constants evaluated from initial volume and compressibility) gave a quantitative fit throughout the range. CaO has a measurable lower compressibility at high pressure than predicted from the theory. This effect is exaggerated in CaS. An interesting feature of the behavior of TlI is that although it exhibits metallic conductivity above 160 kbar, there is no measurable discontinuity in the compressibility near this point.read more
Citations
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Journal ArticleDOI
High‐Pressure Equation of State for NaCl, KCl, and CsCl
TL;DR: In this article, the equation of state for NaCl from a Mie-Gruneisen equation was repeated using more accurate values of the zero pressure compressibility, and extended to KCl and CsCl.
Journal ArticleDOI
Universal features of the equation of state of solids
TL;DR: In this article, it was shown that the equation of state for all classes of solids in compression can be expressed in terms of a universal function, and that the form of this universal function is determined by scaling experimental compression data for measured isotherms of a wide variety of Solids.
Journal ArticleDOI
The Elastic Properties of Composite Materials
TL;DR: In this paper, the problem of determining the elastic properties of composite materials (polycrystals, polycrystals and porous or cracked solids) is approached in several ways, via scattering theory, through variational principles, or by the assumption of specific geometries for the material under consideration.
Journal ArticleDOI
A universal equation of state for solids
TL;DR: In this article, the total energy versus interatomic spacing of ionic, metallic, covalent, and rare-gas solids is examined, and a universal form for pressure as a function of volume for all classes of solids in compression is derived.
Journal ArticleDOI
Some elastic constant data on minerals relevant to geophysics
TL;DR: In this paper, the elastic constants and related pressure and temperature derivatives of ten compounds of interest to geophysical and geochemical theories are reported and analyzed, and the corrections that are expected from effects of anisotropy and porosity are discussed.
References
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Book ChapterDOI
Cohesion of Ionic Solids in the Born Model
TL;DR: The Born model was originally proposed for the purpose of evaluating the lattice energy of crystals, which approach this idealized picture, and because of its success and simplicity it has subsequently been applied to the description of a variety of physical properties of ionic crystals, with varying degrees of success.
Book ChapterDOI
Compression of Solids by Strong Shock Waves
TL;DR: In this paper, the authors present a review of the experimental approaches to the problem of determining the pressure-compression states behind shock waves and a summary of the published experimental data for solids is given.
Journal ArticleDOI
Dispersion and Polarizability and the van der Waals Potential in the Alkali Halides
TL;DR: In this article, it was shown that the ultraviolet absorption of NaCl, KCl and KI is in agreement with the dispersion of these salts, and with these assumed absorption curves, the dipole-dipole potential constant for the van der Waals attraction between negative ions can be calculated with considerable accuracy.