Diffuse scattering from microstructures and mesostructures
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Stuart A. Hayward
Abstract
Mesoscopic features, such as thick twin walls, surface relaxations, or haloes around metamict regions in crystals have a lengthscale of the order of 1–100 Å. Such features are studied experimentally using diffuse scattering signals; either between pairs of twin-related Bragg peaks (for twin walls) or around Bragg peaks (for features such as metamict haloes). Study of such features by X-ray diffraction has a number of advantages over the use of electron microscopy, many related to the reduced need for invasive sample preparation. The weak intensity of diffraction from mesostructures requires careful attention to experimental design, either using extremely strong incident radiation, or optimised collection geometry. Measurements of twin wall widths in a range of ferroelastic and co-elastic materials and minerals and their temperature dependence are reviewed, and found to be consistent with theoretical predictions and the results of other experimental methods. Determination of the size of metamict regions in zircon from diffuse scattering agree with the results of microscopy experiments.
© by Oldenbourg Wissenschaftsverlag, München, Germany
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- Determination of phonon dispersion relations by X-ray thermal diffuse scattering
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- Problems in measuring diffuse X-ray scattering
- Case studies of molecular disorder
- Stacking disorder: the hexagonal polymorph of tris(bicyclo[2.1.1]hexeno)benzene and related examples
- Diffuse X-ray scattering from tiny sample volumes
- Magnetic short-range order in disordered and ordered binary alloys
- Diffuse scattering in the layered perovskites
- Cooperative Evolution — a new algorithm for the investigation of disordered structures via Monte Carlo modelling
Articles in the same Issue
- Grazing incidence diffraction of cadmium arachidate multilayers at the solid-liquid interface
- Editorial: Diffuse Scattering
- Diffuse scattering from microstructures and mesostructures
- Atomic pair distribution function analysis of materials containing crystalline and amorphous phases
- Determination of phonon dispersion relations by X-ray thermal diffuse scattering
- Diffuse scattering and disorder in zirconia
- Disorder, structured diffuse scattering and the transmissionelectron microscope
- Modelling disorder in 3,3′-dimethoxybenzil, C16H14O4
- Diffuse scattering and phason modes in the i-AlPdMn quasicrystalline phase
- Problems in measuring diffuse X-ray scattering
- Case studies of molecular disorder
- Stacking disorder: the hexagonal polymorph of tris(bicyclo[2.1.1]hexeno)benzene and related examples
- Diffuse X-ray scattering from tiny sample volumes
- Magnetic short-range order in disordered and ordered binary alloys
- Diffuse scattering in the layered perovskites
- Cooperative Evolution — a new algorithm for the investigation of disordered structures via Monte Carlo modelling
