A neutron and X-ray diffraction study of the structure of the LaP3O9 glass

A study of low energy magnetic excitations in terbium metaphosphate glass

“…When the data are scaled by a straight line the S TbTb ðQÞ spectrum (insert in Fig. 6) of terbium metaphosphate glass closely resembles the structure factors measured in other amorphous material [23,24]; the partial structure factor is expected to oscillate about unity and the frequency of the oscillations gives information on the correlation distances. The S TbTb ðQÞ spectrum shows a well defined first maximum at Q ¼ 12:5 nm À1 .…”

Vibrational spectra of R(PO3)3 metaphosphates (R = Ga, In, Y, Sm, Gd, Dy)

“…Glasses containing La-Nd, however, avoid that bonding scheme, as evidenced by recent neutron diffraction and EXAFS studies. 8,10,12 The preference of the majority of R(PO 3 ) 3 structures for twofold bonding of NBOs is primarily due to the transfer of covalent bonding in the direction of the R-O bond. These structures involve cations with large charges in order to maintain reasonable bond orders on the oxygen atoms.…”

The structure of zinc polyphosphate glass studied by diffraction methods and 31P NMR

“…Reverse Monte Carlo simulations on the basis of diffraction data with high real-space resolution have shown [15] that the main peak of the SðsÞ function of the Zn metaphosphate sample mainly originates from the superposition of the Zn 2þ -PO 4 phosphate glass systems, a prepeak could be expected to be produced by the Zn 2þ -PO 4 -Zn 2þ correlations. For example, the pronounced prepeak observed in the SðsÞ function of La metaphosphate glass is mainly attributable to the La 3þ -PO 4 -La 3þ correlations [43]. However, the ionic radius of the Zn 2þ cation, r Zn ¼ 0:060 nm, is much smaller than that of the La 3þ cation, r La ¼ 0:116 nm.…”