6 papers
Radial gradient of superionic hydrogen in Earth's inner core
Zepeng Wu, Liangrui Wei, Chen Gao +3
Hydrogen is considered a key light element in Earth's core, yet the thermodynamics of its superionic phase and its distribution in the inner core remain unclear. Here, we compute a…
Assessing foundational atomistic models for iron alloys under Earth's core conditions
Tianqi Wan, Liangrui Wei, Zepeng Wu +2
We assess the capability of recently developed foundational atomistic models (FAMs) to simulate iron alloys under the extreme pressures and temperatures of Earth's core. Static equ…
Novel phases in the Fe-Si-O system at terapascal pressures
Nan Huang, Renata M. Wentzcovitch, Zepeng Wu +4
The Fe-Si-O ternary system, central to modeling the interiors of terrestrial planets, remains poorly constrained at Terapascal (TPa) pressures characteristic of super-Earth mantles…
Ab initio superionic-liquid phase diagram of Fe1-xOx under Earth's inner core conditions
Zepeng Wu, Chen Gao, Feng Zhang +4
The superionic state is a phase of matter in which liquid-like ionic mobility coexists with a solid crystalline lattice. Recently identified in Earth's inner core (IC), this state…
Prediction of Li3Fe8B8 compound with rapid one-dimensional ion diffusion channels
Shiya Chen, Paul Oftedahl, Zhen Zhang +7
Using a computational crystal structure search in the Li-Fe-B ternary system, we predict a stable phase of Li3Fe8B8, featuring 1D channels that enable rapid Li-ion transport. Ab in…
The Fe-Ni phase diagram and the Earth's inner core structure
Liangrui Wei, Kai-Ming Ho, Renata M. Wentzcovitch +1
The Fe-Ni alloy is believed to be the main component of Earth's core. Yet, a comprehensive understanding of phase equilibria near the melting point of this alloy under core conditi…