Density of amorphous to 133 GPa with possible pyritelike structure and stiffness at high pressure

S Petitgirard, G Spiekermann, K Glazyrin, J Garrevoet… - Physical Review B, 2019 - APS
Germanium oxide is a prototype network-forming oxide with pressure-induced structural
changes similar to those found in crystals and amorphous silicate oxides at high pressure …

High Pressure–Temperature Study of MgF2, CaF2, and BaF2 by Raman Spectroscopy: Phase Transitions and Vibrational Properties of AF2 Difluorides

X Zhang, L Li, Y Yu, Q Zhang, N Sun, Z Mao… - ACS …, 2024 - ACS Publications
The phase transition of AF2 difluorides strongly depends on pressure, temperature, and
cationic radius. Here, we have investigated the phase transition of three difluorides …

Ge coordination in glass upon compression to 131 GPa

M Krstulović, AD Rosa, N Biedermann, G Spiekermann… - Physical Review B, 2020 - APS
Structural transformations at high pressure in NaAlG e 3 O 8 glass were investigated by
means of x-ray absorption spectroscopy at the Ge K edge in combination with a diamond …

[HTML][HTML] Raman spectroscopic insights into the transition to the post-post-perovskite phase in NaZnF3

SB Pillai, A Dziarnowska, Z Mazej… - Journal of Physics and …, 2024 - Elsevier
The phase transition sequence of perovskite materials is an important subject in numerous
fields ranging from geophysics to material science. The fluoride NaZnF 3, adopting the …

Structural changes in aluminosilicate glasses up to 164 GPa and the role of alkali, alkaline earth cations and alumina in the densification mechanism

M Krstulović, AD Rosa, N Biedermann, T Irifune… - Chemical …, 2021 - Elsevier
Pressure induced structural changes in silicate melts have a great impact on their physico-
chemical properties and hence on their behaviour in the deep Earth's interior. In order to …

Local structural investigation of non-crystalline materials at high pressure: the case of GeO2 glass

X Hong, M Newville, Y Ding - Journal of Physics: Condensed …, 2023 - iopscience.iop.org
Local structures play a crucial role in the structural polyamorphism and novel electronic
properties of amorphous materials, but their accurate measurement at high pressure …

as a low-pressure analog of

D Kurzydłowski, A Gajek, Z Mazej - Physical Review Materials, 2021 - APS
Solid-state systems whose properties at high pressure (exceeding 1 GPa) mimic those of Mg
Si O 3 are of large importance in the study of the interior of planets. By means of density …

Ramp Compression of Germanium Dioxide to Extreme Conditions: Phase Transitions in an Analog

D Kim, IK Ocampo, RF Smith, F Coppari, M Millot… - Physical Review X, 2023 - APS
The high-pressure (HP) behavior of dioxides is of interest due to their extensive
polymorphism and role as analogs for SiO 2, a phase expected to be important in the deep …

Equation of state and high-pressure phase transitions in Mg2GeO4 olivine

RV Divya, G Kumar, RE Cohen, SJ Tracy… - arxiv preprint arxiv …, 2023 - arxiv.org
Germanates are often used as structural analogs of planetary silicates. We have explored
the high-pressure phase relations in Mg2GeO4 using diamond anvil cell experiments …

Laser-Driven Dynamic Compression of Planetary Materials

D Kim - 2022 - search.proquest.com
This thesis describes the use of dynamic compression on nanosecond timescales to explore
the properties of selected materials relevant to the deep interiors of Earth and other planets …