The X-Ray Diffraction Service Group (Robert Dinnebier) provides X-ray diffraction measurements of powders and single crystals in the laboratory and at the synchrotron as well as neutron sources at ambient and non-ambient conditions. Research within the group is mainly concerned with the determination of crystal structures and microstructural properties (strain, domain size) of condensed matter from powder diffraction data. In addition, methodological development within this area is pursued. Scientific cooperation in all fields of routine and non-routine analysis of powder diffraction data is offered. Special expertise in the field of solution and refinement of crystal structures from powder diffraction data can be provided. Long-term research projects deal with the application of the method of maximum entropy (MEM) to powder diffraction data, parametric Rietveld refinement, automated analysis of 2D powder diffraction data, structure-property relationships of functional materials (e.g. thermochromic-, photochromic-, electronic-, magnetic-, building materials, mechanically response crystals), analysis of disordered materials, theory of ferroelastic phase transitions, analysis of magnetic structures, in-situ monitoring of mechanochemical synthesis, gas loading of metal-organic frameworks (MOFs) etc.