QTA Internet Course
This course aims at providing the knowledge and the tools to quantitatively determine the crystallographic texture of a known crystalline single- or poly-phased sample from powder diffraction data, and to show on few examples how the texture dominates the properties.
Texture means that an orientation distribution of crystallites is present: the material of concerns is between a pure powder (with a perfectly random distribution of its individual crystals) and a perfect single-crystal (with only one pure orientation, and without any distribution). While a perfect single-crystal does not exist, a perfect powder can sometimes be fabricated. However, most of the times, the elaboration processes (thin film deposition, synthesis under magnetic field or uniaxial pressure, natural processes ...) give rise to the development of texture, which is then important to characterise. If the sample can be destroyed and if the texture is not important, grinding it and using the usual characterisation tools may suffise. For instance, powder diffraction experiments will allow the usual Rietveld or other refinement strategies. Otherwise, if your sample or if the texture is precious for you, this course may be of interest.
At the end of this course, it is expected that the candidates will be able to recognise qualitatively a texture, propose a methodology to characterise it, refine a full quantitative Orientation Distribution Function (ODF) and interpret it for the final examination stage. We estimate that a normal duration for passing the exam would be around 15 weeks of intensive learning. However, peoples that work aside (students, professionals ...) may necessitate more, and the duration will not be a parameter. The rules will be:
Comments and suggestions are very welcome
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