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cond-mat.mtrl-sci2025
Tetragonal Fe2O: the stable iron oxide at Earth's core conditions
Junjie Jiang, Zhen Zhang, Tongqi Wen +2
The Fe-O system is fundamental to understanding the composition and properties of the Earth's core. Recent studies have suggested the possible existence of stable, iron-rich FenO c…
cond-mat.mtrl-sci2025
Ferroelasticity, shear modulus softening, and the tetragonal-cubic transition in davemaoite
Tianqi Wan, Chenxing Luo, Zhen Zhang +2
Davemaoite (Dm), the cubic phase of CaSiO3-perovskite (CaPv), is a major component of the Earth's lower mantle. Understanding its elastic behavior, including its dissolution in bri…
cond-mat.mtrl-sci2025
Spin state of iron in I-42d-type Mg2SiO4 at ultra-high pressures
Tianqi Wan, Yang Sun, Renata M. Wentzcovitch
At extreme pressures of approximately 500 GPa, conditions characteristic of the deep interiors of super-Earths, the combination of NaCl-type MgO and post-perovskite-type MgSiO3 (PP…