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Author

V. Prakapenka

3 papers indexed here

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Open access Sep 2026

K5Ir: reduced iridium stabilized at high pressure

Alkali binary compounds offer a way to expand our understanding of the periodic table. Specifically, the redox inert nature of alkali cations, even within some intermetallic compounds, enables one to access exotic oxidation states. Iridium presents a test case, as it is the transition metal best positioned to form a tr...

Douglas H. Fabini, R. Martyniak, A. Rosa et al. · 0 citations
Sep 2026

A laser heating diamond anvil cell system for high-pressure nuclear resonant scattering at 3-ID, APS.

Nuclear resonant scattering (NRS) provides the basis for powerful synchrotron-based techniques, including synchrotron Mössbauer spectroscopy (SMS) and nuclear resonant inelastic x-ray scattering (NRIXS), which probe the elastic, magnetic, thermodynamic, and vibrational properties of iron-bearing materials and are, ther...

Ci-Jin Zhou, B. Lavina, T. Toellner et al. · 0 citations
Aug 2026

CaSiO3 Glass Under Pressure: Structural Evolution, Elastic Response, and Comparison with MgSiO3 and SiO2 Glasses

We have studied CaSiO3 glass to 65 GPa using synchrotron X-ray scattering, Raman spectroscopy, and Brillouin scattering to investigate its structural and elastic evolution. X-ray scattering reveals the emergence of a new feature in the pair distribution function, g(r), near 3 Å from ∼5 GPa and a systematic shift in t...

Y. Ryu, Yan-Bin Wang, Tony Yu et al. · 0 citations

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