Seismic images of Earth's interior reveal two massive anomalous zones at the base of the
mantle, above the core, where seismic waves travel slowly. The mantle materials that …

Mantle minerals at shallow depths contain iron in the high-spin electronic state. The crystal-
field splitting energy increases with increasing pressure, which can favor the low-spin state …

The spin state of Fe can alter the key physical properties of silicate melts, affecting the early
differentiation and the dynamic stability of the melts in the deep rocky planets. The low-spin …

Density is a key property controlling the chemical state of Earth's interior. Our knowledge
about the density of relevant melt compositions is currently poor at deep‐mantle conditions …

High-pressure synchrotron Mössbauer (SMS) and X-ray emission (XES) spectroscopic
measurements were conducted to investigate the spin and valence states of iron in (Al, Fe) …

Mössbauer spectroscopy is an important tool in geoscience. Samples are often small or
heterogeneous, requiring measurements with small beam size. Such measurements can be …

Iron is the most abundant transition metal in the Earth's interior, yet considerable
uncertainties remain as to why mantle-derived rocks have diverse iron isotopic …

Ab initio molecular dynamics calculations on a carbonate‐silicate‐metal melt were
performed to study speciation and coordination changes as a function of pressure and …

Probing the degree of polymerization and structural disorder of (Mg, Fe) SiO 3 glasses and
melts remains a challenging problem, despite their strong implications for the properties of …

The X‐ray absorption fine structure (XAFS) spectrum is sensitive to the local structure of a
specific element of interest and a useful tool for elucidating changes in the coordination …