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1995 (1)
1Author    Uwe Hoppe3, Günter Walter8, Dörte Stachelb, AlexC. HannoncRequires cookie*
 Abstract    h o r t-R a n g e O r d e r D e ta ils o f M e ta p h o s p h a te G la s s e s S tu d ie d b y P u ls e d N e u tr o n S c a tte r in g Details of the short-range order of the binary metaphosphate glasses A1P30 9 and PbP2Oe and the ternary glass system ZnO-MgO-2P2Os have been studied by pulsed neutron scattering which provides a measuring range up to about ß m ax = 500 nm-1. The splitting of the P-O peak in the distance correlation functions attributable to the different bond lengths for the non-bridging and bridging oxygens was found to decrease with increasing field strength of the network-modifier cations. For the ternary system ZnO-MgO-2P2Os the peak in the distance correlation function, T(r), produced by the first oxygen neighbours around Zn2+ and Mg2+ was separated by the additional use of the X-ray structure factor. The distances rZn0 and rM gQ extracted from the separated peaks are slightly different from those obtained from the binary glasses ZnP20 6 and MgP20 6. The metal-oxygen coordination numbers were found to be NZn0=4.5 and NM g0 = 5.5. For the two binary systems the coordination numbers Al-0 and Pb-0 were obtained to be 7 and 5, respectively. 
  Reference    Z. Naturforsch. 50a, 684—692 (1995); received March 6 1995 
  Published    1995 
  Keywords    Pulsed neutron scattering, phosphate glasses, short-range order 
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 TEI-XML for    default:Reihe_A/50/ZNA-1995-50a-0684.pdf 
 Identifier    ZNA-1995-50a-0684 
 Volume    50