Theoretical approaches to structure and spectroscopy of earth materials

S Jahn, PM Kowalski - Reviews in Mineralogy and …, 2014 - pubs.geoscienceworld.org
The characterization of complex materials in terms of their structure, electronic, magnetic,
vibrational, thermodynamic or other physical and chemical properties is often a challenging …

Spin-State Crossover and Hyperfine Interactions of Ferric Iron in Perovskite

H Hsu, P Blaha, M Cococcioni, RM Wentzcovitch - Physical Review Letters, 2011 - APS
Using density functional theory plus Hubbard U calculations, we show that the ground state
of (Mg, Fe)(Si, Fe) O 3 perovskite, the major mineral phase in Earth's lower mantle, has high …

First-principles study of electronic and structural properties of CuO

B Himmetoglu, RM Wentzcovitch, M Cococcioni - Physical Review B …, 2011 - APS
We investigate the electronic and structural properties of CuO, which shows significant
deviations from the trends obeyed by other transition-metal monoxides. Using an extended …

Raman spectroscopy and x-ray diffraction of at lower mantle pressures

SS Lobanov, X Dong, NS Martirosyan, AI Samtsevich… - Physical Review B, 2017 - APS
The exceptional ability of carbon to form sp 2 and sp 3 bonding states leads to a great
structural and chemical diversity of carbon-bearing phases at nonambient conditions. Here …

The thermal equation of state of (Mg, Fe)SiO3 bridgmanite (perovskite) and implications for lower mantle structures

AS Wolf, JM Jackson, P Dera… - Journal of Geophysical …, 2015 - Wiley Online Library
The high‐pressure/high‐temperature equation of state (EOS) of synthetic 13% Fe‐bearing
bridgmanite (Mg silicate perovskite) is measured using powder X‐ray diffraction in a laser …

Design Principles for Metal Oxide Redox Materials for Solar‐Driven Isothermal Fuel Production

R Michalsky, V Botu, CM Hargus… - Advanced energy …, 2015 - Wiley Online Library
The performance of metal oxides as redox materials is limited by their oxygen conductivity
and thermochemical stability. Predicting these properties from the electronic structure can …

Thermodynamic properties of (Mg,Fe2+)SiO3 perovskite at the lower-mantle pressures and temperatures: an internally consistent LSDA+U study

A Metsue, T Tsuchiya - Geophysical Journal International, 2012 - academic.oup.com
The thermodynamic properties of (Mg0. 9375Fe2+ 0.0625) SiO3 perovskite have been
investigated at the pressure and temperature conditions of the lower mantle by first …

Electron doping of a double-perovskite flat-band system

L Jin, N Varnava, D Ni, X Gui, X Xu… - Proceedings of the …, 2023 - National Acad Sciences
Electronic structure calculations indicate that the Sr2FeSbO6 double perovskite has a flat-
band set just above the Fermi level that includes contributions from ordinary subbands with …

High-pressure, temperature elasticity of Fe-and Al-bearing MgSiO3: Implications for the Earth's lower mantle

S Zhang, S Cottaar, T Liu, S Stackhouse… - Earth and Planetary …, 2016 - Elsevier
Fe and Al are two of the most important rock-forming elements other than Mg, Si, and O.
Their presence in the lower mantle's most abundant minerals, MgSiO 3 bridgmanite, MgSiO …

First principles calculations of oxygen vacancy formation in barium-strontium-cobalt-ferrite

C Zhang, PD Bristowe - RSC advances, 2013 - pubs.rsc.org
Perovskite-type barium-strontium-cobalt-ferrite (BSCF) is a potentially significant material in
the development of electrodes for solid oxide fuel cells and electrolysis cells, primarily …