Strukturaufklaerung neu synthetisierter ionischer Oxide und Keramiken Schlussbericht

The determination of the structure of novel compounds is a precondition for the success of long time preparative projects in solid state chemistry. Some of our scientific projects are hindered by the absence of single crystals for which a structural characterization can be easily done. Because of the application of new powder techniques i.e. X-ray diffraction at a synchrotron or neutron scattering and following combinated structural refinements some difficult problems could be resolved. Examples are the determination of positions and fractions of light atoms besides heavy atoms, the discernment of atoms similar to X-ray diffraction or the determination of new high pressure or high temperature phases. Besides, the structural investigations have been expanded to amorphous systems. Diffraction using high energy photons and application of isotopic contrast technique made it possible to gain detailed information on the short and middle range order of new ceramics. (orig.)SIGLEAvailable from TIB Hannover: DtF QN1(78,49) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany)DEGerman