Journal Article

PUBDB-2022-01094

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Structure of binary antimony phosphate glasses by diffraction methods

Hoppe, U. (Corresponding author)Extern* ; Schöps, A.DESY* ; Hannon, A.Extern* ; Barz, A. ; Stachel, D.

2022
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jnoncrysol.2022.121476  doi:10.3204/PUBDB-2022-01094

Abstract: Antimony phosphate glasses (Sb$_2$O$_3$)x(P$_2$O$_5$)$_{1-x}$ with $x$ = 0.05 and 0.80 were measured by neutron and X-ray diffraction with high real-space resolution. The P−O and O−O distance peaks of the PO$_4$ tetrahedra were found with the expected parameters. For the glass of $x$ = 0.80 the Sb−O and O−O coordination numbers and distances suggest highly distorted SbO$_3$ and SbO$_4$ environments according to strong lone-pair effects of the Sb$^{3+}$. The fraction of SbO$_4$ has the right portion that all oxygens can form Sb−O−Sb or Sb−O−P bridges. Significant numbers of secondary Sb−O bonds (> 0.25 nm) are extracted. The first diffraction peak at 13 nm$^{−1}$ is related to distances between stacked layers of corner-connected oxygen triangles as in the orthorhombic Sb$_2$O$_3$. For the glass of $x$ = 0.05 the medium-range order reminds that of vitreous P$_2$O$_5$. Its SbO$_4$ units are formed with mean Sb−O bonds of 0.210 nm.

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Contributing Institute(s):

1. FS-Experimentebetreuung DORIS (FS-DO)
2. FS-Undulator Systeme (FS-US)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)

Experiment(s):

1. DORIS Beamline BW5 (DORIS III)

Appears in the scientific report 2022

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

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