Light elements in the Earth's core

K Hirose, B Wood, L Vočadlo - Nature Reviews Earth & Environment, 2021 - nature.com
Constraining the core's composition is essential for understanding Earth accretion, core
formation and the sustainment of Earth's magnetic field. Earth's outer and inner core exhibit …

Materials under extreme conditions using large X-ray facilities

S Pascarelli, M McMahon, C Pépin, O Mathon… - Nature Reviews …, 2023 - nature.com
Active research is ongoing that investigates the properties of matter under extreme pressure.
Such condensed matter is found inside planets at millions of atmospheres and thousands of …

Mass–radius relation for rocky planets based on PREM

L Zeng, DD Sasselov, SB Jacobsen - The Astrophysical Journal, 2016 - iopscience.iop.org
Several small dense exoplanets are now known, inviting comparisons to Earth and Venus.
Such comparisons require translating their masses and sizes to composition models of …

Experimental evidence for hydrogen incorporation into Earth's core

S Tagawa, N Sakamoto, K Hirose, S Yokoo… - Nature …, 2021 - nature.com
Hydrogen is one of the possible alloying elements in the Earth's core, but its siderophile
(iron-loving) nature is debated. Here we experimentally examined the partitioning of …

Abundant polymorphic transitions in the Al0. 6CoCrFeNi high-entropy alloy

L Wang, F Zhang, Z Nie, F Wang, B Wang, S Zhou… - Materials Today …, 2019 - Elsevier
Polymorphism and polymorphic transitions are attracting considerable interest because of
their significant effect on the phase stability, switchable properties, and the atomic …

Melting of iron at Earth's inner core boundary based on fast X-ray diffraction

S Anzellini, A Dewaele, M Mezouar, P Loubeyre… - Science, 2013 - science.org
Earth's core is structured in a solid inner core, mainly composed of iron, and a liquid outer
core. The temperature at the inner core boundary is expected to be close to the melting point …

[HTML][HTML] Direct measurement of thermal conductivity in solid iron at planetary core conditions

Z Konôpková, RS McWilliams, N Gómez-Pérez… - Nature, 2016 - nature.com
The conduction of heat through minerals and melts at extreme pressures and temperatures
is of central importance to the evolution and dynamics of planets. In the cooling Earth's core …

[HTML][HTML] Experimental determination of the electrical resistivity of iron at Earth's core conditions

K Ohta, Y Kuwayama, K Hirose, K Shimizu, Y Ohishi - Nature, 2016 - nature.com
Earth continuously generates a dipole magnetic field in its convecting liquid outer core by a
self-sustained dynamo action. Metallic iron is a dominant component of the outer core, so its …

Toroidal diamond anvil cell for detailed measurements under extreme static pressures

A Dewaele, P Loubeyre, F Occelli, O Marie… - Nature …, 2018 - nature.com
Over the past 60 years, the diamond anvil cell (DAC) has been developed into a widespread
high static pressure device. The adaptation of laboratory and synchrotron analytical …

Toward an internally consistent pressure scale

Y Fei, A Ricolleau, M Frank, K Mibe… - Proceedings of the …, 2007 - National Acad Sciences
Our ability to interpret seismic observations including the seismic discontinuities and the
density and velocity profiles in the earth's interior is critically dependent on the accuracy of …