ISSN:
1432-2021
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
Abstract This papers reviews elastic constant systematics. The bulk modulus of oxides and silicates is generally predictable on the basis of density and mean atomic weight. For constant mean atomic weight, $$\bar M$$ , the bulk modulus is inversely proportional to the fourth power of the molar volume, regardless of whether molar volume changes due to temperature,T, pressure,P, or crystal structure. This iso- $$\bar M$$ trend has the explanation that the Grüneisen parameter, (∂K/∂P) T , and −(1/αK)(∂K/∂T) P , whereK is bulk modulus and α is volumetric thermal expansion, are approximately constant for most materials. For isostructural compounds, the bulk modulus is inversely proportional to the molar volume. This isostructural trend has the explanation that a certain combination of interatomic force parameters are the same for isostructural compounds. Equivalent iso- $$\bar M$$ and isostructural trends are discussed for velocity versus density. Exceptions to the systematics exist.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00633574
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