Browsing by Author "Hoyer W."

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    Structure of GeSe4-In and GeSe5-In glasses
    (2010-10-13) Kaban I.; Jóvári P.; Petkova T.; Petkov P.; Stoilova A.; Hoyer W.; Beuneu B.
    (Ge0.2Se0.8)100-xInx and (Ge0.17Se0.83)100-xInx (x = 0, 5, 10, 15 at.%) chalcogenide glasses have been studied with high-energy x-ray diffraction, neutron diffraction and extended x-ray absorption spectroscopy at Ge, Se and In K-edges. The experimental data were modelled simultaneously with the reverse Monte Carlo simulation method. GeSe4/2 tetrahedra are shown to be the main structural units in the binary and ternary glasses investigated. Indium bonds to the excess Se atoms in the ternary Ge-Se-In glasses. While the majority of In atoms have three Se neighbours, some In atoms may be tetrahedrally coordinated by Se. © 2010 IOP Publishing Ltd.