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

Georg Spiekermann,Manuel Harder,K. Gilmore,P. Zalden,Ch. J. Sahle,Sylvain Petitgirard,Max Wilke,N. Biedermann,Christopher Weis,Wolfgang Morgenroth,John S. Tse,E Kulik,Norimasa Nishiyama,Hasan Yavaş,Christian Sternemann

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

2019

Georg Spiekermann
Manuel Harder
K. Gilmore
P. Zalden
Ch. J. Sahle
Sylvain Petitgirard
Max Wilke
N. Biedermann
Christopher Weis
Wolfgang Morgenroth
John S. Tse
E Kulik
Norimasa Nishiyama
Hasan Yavaş
Christian Sternemann

X-ray emission spectra reveal that under pressure conditions of Earth's lower mantle, the compaction mechanism in amorphous germanium dioxide on the atomic scale is similar to that of its crystalline form.

Keywords:

Condensed matter physics
Amorphous solid
X Ray Emission Spectroscopy
Octahedron
Crystallography
Physics

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