The search result changed since you submitted your search request. Documents might be displayed in a different sort order.
  • search hit 3 of 85
Back to Result List

Persistent Octahedral Coordination in Amorphous GeO₂ Up to 100 GPa by Kβ'' X-Ray Emission Spectroscopy

  • We measure valence-to-core x-ray emission spectra of compressed crystalline GeO₂ up to 56 GPa and of amorphous GeO₂ up to 100 GPa. In a novel approach, we extract the Ge coordination number and mean Ge-O distances from the emission energy and the intensity of the Kβ'' emission line. The spectra of high-pressure polymorphs are calculated using the Bethe-Salpeter equation. Trends observed in the experimental and calculated spectra are found to match only when utilizing an octahedral model. The results reveal persistent octahedral Ge coordination with increasing distortion, similar to the compaction mechanism in the sequence of octahedrally coordinated crystalline GeO₂ high-pressure polymorphs.

Export metadata

Additional Services

Search Google Scholar Statistics
Metadaten
Author details:Georg SpiekermannORCiDGND, M. Harder, Keith Gilmore, Peter Zalden, Christoph J. Sahle, Sylvain Petitgirard, Max WilkeORCiDGND, Nicole BiedermannORCiD, Thomas Weis, Wolfgang Morgenroth, John S. Tse, E. Kulik, Norimasa Nishiyama, Hasan Yavaş, Christian Sternemann
DOI:https://doi.org/10.1103/PhysRevX.9.011025
ISSN:2469-9926
ISSN:0556-2791
ISSN:1050-2947
ISSN:1094-1622
Title of parent work (English):Physical Review X
Publisher:American Physical Society by the American Institute of Physics
Place of publishing:Melville, NY
Publication type:Article
Language:English
Date of first publication:2019/02/06
Publication year:2019
Release date:2019/04/23
Tag:CU; MO; SIO₂; complexes; crystalline; glass; oxygen; pressures; rutile-type; silicon
Volume:9
Issue:1
Number of pages:10
Funding institution:Universität Potsdam
Funding number:PA 2019_07
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften
DDC classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Peer review:Referiert
Grantor:Publikationsfonds der Universität Potsdam
Publishing method:Open Access
License (German):License LogoCC-BY - Namensnennung 4.0 International
External remark:Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 699
Accept ✔
This website uses technically necessary session cookies. By continuing to use the website, you agree to this. You can find our privacy policy here.