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Can I read Temperature-dependent X-ray dynamical diffraction: Darwin theory simulations on EtoBox?
Temperature-dependent X-ray dynamical diffraction: Darwin theory simulations by Jin-Seok Chung; Stephen M. Durbin is a Materials Science article available to read on EtoBox.
What is Temperature-dependent X-ray dynamical diffraction: Darwin theory simulations about?
Thermal vibrations destroy the perfect crystalline periodicity generally assumed by dynamical diffraction theories. This can lead to some difficulty in deriving the temperature dependence of X-ray reflectivity from otherwise perfect crystals. This difficulty is overcome here in numerical simulations based on the extended Darwin theory, which does not require periodicity. Using Si and Ge as model materials, it is shown how to map the lattice vibrations derived from measured phonon dispersion curves onto a suitable Darwin model. Good agreement is observed with the usual Debye–Waller behavior predicted by standard theories, except at high temperatures for high-order reflections. These deviations are discussed in terms of a possible breakdown of the ergodic hypothesis for X-ray diffraction.
Who reads Temperature-dependent X-ray dynamical diffraction: Darwin theory simulations?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Jin-Seok Chung; Stephen M. Durbin
- Publisher
- International Union of Crystallography; International Union of Crystallography (IUCr) (ISSN 0108-7673)
- Published
- 1999
- Language
- EN
- Field
- Materials Science (Physical Sciences)