We invite applications for two funded PhD student positions for an NSF funded project spanning high-pressure mineral physics, computational fluid dynamics, and seismology, aimed at studying Earth's core. This project is a collaboration between Earth and Planetary Sciences at UC Berkeley and the Department of Geology and Geophysics at the University of Utah. The student focusing on mineral physics will be at the University of Utah, while the student focusing on computational fluid dynamics and seismology will be hosted at UC Berkeley. This interdisciplinary project will touch on: geomagnetism, fluid mechanics, thermodynamics, crystallography, and geophysics. The research aims to explore how the mineralogical properties of solid iron controlled how it crystallised, and how this influenced the outer core convection and the seismic velocity structure of the inner core. The applicants will work under the supervision of Bruce Buffett and Dan Frost (UC Berkeley) and Lowell Miyagi (University of Utah). We emphasise the collaborative nature of this project. Students will be encouraged to engage in the other disciplines. Moreover, students will be supported to visit and work at the partner institute with the other supervisors. Students will also be supported to attend the American Geophysical Fall Meeting and other relevant workshops and conferences. We welcome students with backgrounds in physics, material science, engineering, computer science, and geoscience. A master's or bachelor's degree in science, engineering, or related fields is required. Programming skills in Python, C++, or MATLAB are preferred. Motivated applicants with strong communication skills, especially experience in scientific writing and presentation are encouraged. These positions are open to students from all countries. The position will remain open until filled and begin either Spring or Fall of 2022. We invite interested students to contact Daniel Frost ( <mailto:dafrost@berkeley.edu> dafrost@berkeley.edu), Bruce Buffett ( <mailto:bbuffett@berkeley.edu> bbuffett@berkeley.edu), and Lowell Miyagi ( <mailto:lowell.miyagi@utah.edu> lowell.miyagi@utah.edu). We strongly encourage applications from individuals with disabilities, women, minorities, non-traditional students, and members of other underrepresented groups.