Journal Article

PUBDB-2019-01769

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Structure of tin phosphate glasses by neutron and X-ray diffraction

Hoppe, U. (Corresponding author)Extern* ; Brow, R. K. ; Hannon, A. C. ; von Zimmermann, M.DESY*

2019
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.nocx.2019.100017  doi:10.3204/PUBDB-2019-01769

Abstract: Neutron and X-ray diffraction experiments with large ranges of scattering vector, up to Q$_{max}$ of 400 nm$^{−1}$ and 250 nm$^{−1}$, respectively, were performed on (SnO)$_x$(P$_2$O5)$_{1-x}$ glasses with 0.5 ≤ x ≤ 0.7, and the structural parameters of the PO and SnO polyhedra were determined. The fraction of P–NBO (non-bridging oxygen) bonds increases systematically at the expense of the P–BO (bridging oxygen) bonds with SnO additions. The SnO coordination number decreases in a predictable way from four at the metaphosphate composition (x = 0.5) to about three at the diphosphate composition (x = 0.67). The structural units are assumed to be SnO$_4$ trigonal bipyramids and SnO$_3$ trigonal pyramids with the lone-pair of Sn(II) electrons occupying one of the corners, similar to those in related crystal structures. For all glasses up to x = 0.67, the SnOz pyramids and PO$_4$ tetrahedra form a continuous network with POP and POSn bonds and the SnO polyhedra do not share oxygen neighbors. From comparisons of the compositional dependences of the SnO and ZnO coordination numbers and the respective number densities of atoms in the binary tin and zinc phosphate glasses, it is presumed that the SnO coordination increases further with N$_{SnO}$ > 4 in the ultraphosphate range (x < 0.5).

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Contributing Institute(s):

1. PETRA III Extension (FS-PEX)

Research Program(s):

1. 6214 - Nanoscience and Materials for Information Technology (POF3-621) (POF3-621)

Experiment(s):

1. DORIS Beamline BW5 (DORIS III)

Appears in the scientific report 2019

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Hoppe, U. (Corresponding author)Extern* ; Brow, R. K. ; Hannon, A. C. ; von Zimmermann, M.DESY*
Erratum to “Structure of tin phosphate glasses by neutron and X-ray diffraction” [Journal of Non crystalline solids:X 2C (2019) 100017]
Journal of non-crystalline solids 18, 100152 (2023) [10.1016/j.nocx.2023.100152]2023     Files BibTeX | EndNote: XML, Text | RIS

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