Uwe Hoppe: Neutrons, X-rays and Phosphate Glasses
During the last 30 years, Uwe Hoppe of the University of Rostock has been pre-eminent amongst researchers studying the structure of phosphate glasses. A brief outline of his life and scientific career is given, with an emphasis on the study of phosphate glasses. His early life and studies within the former communist bloc are described. As communism came to an end, he rapidly made his mark on the wider world stage, with a long series of structural studies of phosphate glasses. These made much use of large central facilities to perform neutron and x-ray diffraction experiments. This work was supported by the availability of high quality phosphate glass samples, provided from within the former East Germany. The key element for the successful exploitation of these experiments, however, was Uwe Hoppe's insight based on structural principles that originate from crystal chemistry. Of especial note are: (1) his definitive neutron diffraction study of the structure of pure P2O5 glass, (2) his neutron diffraction results on the composition-dependence of the two P–O bond lengths (to terminal and bridging oxygens, respectively) in phosphate glasses, and above all (3) his development of the Hoppe model, a detailed model for the structure of phosphate glasses.
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Document Type: Research Article
Publication date: October 1, 2019