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23 papers · 1 filter
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…
Melting Temperature of Iron Under the Earth's Inner Core Condition from Deep Machine Learning
Fulun Wu, Cai-Zhuang Wang, Kai-Ming Ho +3
Constraining the melting temperature of iron under Earth's inner core conditions is crucial for understanding core dynamics and planetary evolution. Here, we develop a deep potenti…
Deep-learning-based prediction of the tetragonalcubic transition in davemaoite
Fulun Wu, Yang Sun, Tianqi Wan +2
Davemaoite, i.e., perovskite (CaPv), is the third most abundant phase in the lower mantle and exhibits a tetragonal-cubic phase transition at high pressures and temperatu…
Numerical simulations of the latest caldera-forming eruption of Okmok volcano, Alaska
Alain Burgisser, Ally Peccia, Terry Plank +1
The 2050 14C yBP caldera-forming eruption of Okmok volcano, Alaska, had a global atmospheric impact. The associated global climate cooling was driven by the amount of sulfur inject…
Elastic anisotropy of lizardite at subduction zone conditions
Xin Deng, Chenxing Luo, Renata M. Wentzcovitch +2
Subduction zones transport water into Earth's deep interior through slab subduction. Serpentine minerals, the primary hydration product of ultramafic peridotite, are abundant in mo…
Thermodynamics of spin crossover in ferropericlase: an improved LDA+ calculation
Yang Sun, Jingyi Zhuang, Renata M. Wentzcovitch
We present LDA+ calculations of high-spin (HS) and low-spin (LS) states in ferropericlase (fp) with an iron concentration of 18.75. The Hubbard parameter is determi…