What Else Can We Learn from a Diffraction Experiment Besides the Average Structure

摘要: So far we have been centering our considerations on the characterization of crystal structures. This is an important aspect diffraction studies and it has enabled us to learn most fundamental concepts. We in fact come across a great many uses for addition structure determination as following list indicates: 1. Chemical analysis (in selected regions with electron microscope, well larger areas standard x-ray fluorescence techniques) (a) From pattern from substance. (Sect. 4.7) (b) From lattice parameter 4.7) (c) From absorption 3.7) 2. Phase boundaries parameters integrated intensities 4.9) (c) From 3.7) 3. Volume fraction phase 4.9) 4. Residual stresses 4.7) 5. Theoretical densities 4.7) 6. Coefficients thermal expansion 4.7) 7. Indexing microscopic features deformation, precipitation 1.4) 8. Texture 4.7)