Radiogenic heating sustains long-lived volcanism and magnetic dynamos in super-Earths

H Luo, JG O'Rourke, J Deng - Science Advances, 2024 - science.org
Radiogenic heat production is fundamental to the energy budget of planets. Roughly half of
the heat that Earth loses through its surface today comes from the three long-lived, heat …

Synthesis and Stability of an Eight‐Coordinated Fe3O4 High‐Pressure Phase: Implications for the Mantle Structure of Super‐Earths

CC Zurkowski, J Yang, S Chariton… - Journal of …, 2022 - Wiley Online Library
Super‐Earths ranging up to 10 Earth masses (ME) with Earth‐like density are common
among the observed exoplanets thus far, but their measured masses and radii do not …

High-pressure order-disorder transition in : Implications for super-Earth mineralogy

R Dutta, SJ Tracy, RE Cohen - Physical Review B, 2023 - APS
(Mg, Fe) Si O 3 post-perovskite is the highest-pressure silicate mineral phase in the Earth's
interior. The extreme pressure and temperature conditions inside large extrasolar planets …

A high-pressure phase of Na 2 CuF 4 with eight-coordinated Cu 2+–a low-pressure analogue of Mg 2 SiO 4

D Upadhyay, SB Pillai, J Drapała, Z Mazej… - Inorganic Chemistry …, 2024 - pubs.rsc.org
Density functional theory calculations and Raman spectroscopy measurements indicate that
compression of Na2CuF4 results in a series of phase transitions leading through distorted …

Ab initio prediction of an order-disorder transition in : Implication for the nature of super-Earth's mantles

K Umemoto, RM Wentzcovitch - Physical Review Materials, 2021 - APS
Here we present an ab initio prediction of an order-disorder transition (ODT) from a I 4¯ 2 d-
type to Th 3 P 4-type phase in the cation sublattices of Mg 2 Ge O 4, a post-post-perovskite …

Topologically prone or cation compression restricted phase transition: An example of feldspar-related SrGe2B2O8

L Gorelova, S Khandarkhaeva, V Yukhno… - Journal of Alloys and …, 2023 - Elsevier
The stability and phase transformation processes of SrGe 2 B 2 O 8 were studied under
extreme conditions (up to 960 ºC/40 GPa) using in situ single-crystal and powder X-ray …

Equation of state and high-pressure phase transitions in Mg2GeO4 olivine

RV Divya, G Kumar, RE Cohen, SJ Tracy… - arXiv preprint arXiv …, 2023 - arxiv.org
Germanates are often used as structural analogs of planetary silicates. We have explored
the high-pressure phase relations in Mg2GeO4 using diamond anvil cell experiments …