Neutron thermodiffractometry study of silver chalcogenide glasses |
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| Institution: | 1. LPMC UMR 5617 ICG FR1878, Université de Montpellier II, Place E. Bataillon, F-34095 Montpellier cedex 5, France;2. Institut Laue Langevin, 6 Rue Jules Horowitz, BP 156, F-38042 Grenoble cedex 9, France;3. Laboratorio de Sólidos Amorfos, Departamento de Física, Facultad de Ingenierı´a, Universidad de Buenos Aires, Paseo Colón 850, (1063) Buenos Aires, Argentina;1. Department of Physics, Indian Institute of Science, Bangalore, India;2. Department of Material Science and Engineering, Lehigh University, Bethlehem, PA, USA;3. Alfred University, New York State College of Ceramics, Alfred, NY, USA;4. Corning Incorporated, Corning, NY, USA;5. Department of Instrumentation, Indian Institute of Science, Bangalore, India;6. Materials Research Centre, Indian Institute of Science, Bangalore, India |
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| Abstract: | Silver-containing chalcogenide glasses are of considerable interest for applications in optical and electrical recordings and as solid electrolytes. Therefore, insight in their structural properties is important. A neutron thermodiffraction study of Agx(Ge0.25Se0.75)100−x glasses with x = 15 and 25 at.% was carried out. The amorphous samples were heated in situ from room temperature up to 350 °C, while the neutron diffraction spectra were collected every degree. For both glasses the Ag8GeSe6 phase appeared first, followed by the crystallization of GeSe2. The crystallization process for the Ag-rich glass was more complex with the appearance of a non-identified third phase. Rietveld refinement helped us in studying the evolution of the lattice constants of each phase upon heating. |
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