Geos 596a, Spring 2006, Lecture 4
Thermal Motion
SiO4 group in quartz showing atomic displacements
CO3 group in calcite showing atomic displacements
Reading:
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Busing W R, Levy H A (1958)
Determination of the principal axes of the anisotropic temperature factor,
Acta Crystallographica 11, 450-451
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Busing W R, Levy H A (1964)
The effect of thermal motion on the estimation of bond lengths from diffraction measurements,
Acta Crystallographica 17, 142-146
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Peterse W J A M, Palm J H (1966)
The anisotropic temperature factor of atoms in special positions,
Acta Crystallographica 20, 147-150
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Downs, R.T., Gibbs, G.V., Bartelmehs, K.L., and Boisen, M.B. (1992) Variations of bond lengths and volumes of silicate tetrahedra with temperature.
American Mineralogist 77, 751-757
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Bartelmehs, K.L., Downs, R.T., Gibbs, G.V., Boisen, M.B., and Birch, J.B. (1995)
Tetrahedral rigid-body motion in silicates.
American Mineralogist 80, 680-690
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Downs, R.T. (2000)
Analysis of harmonic displacement factors.
Reviews in Mineralogy and Geochemistry, 41, High-Temperature and High-Pressure Crystal Chemistry, Robert M.
Hazen and Robert T. Downs, Editors. Mineralogical Society of America, Washington DC.