2016/09/16 by Pinku Saha, Saha, Pinku, Goutam Dev Mukherjee +1
Chemistry · Materials Science · Physics and Astronomy · #Chemical Thermodynamics and Molecular Structure #Chemistry #Composite material #Conductivity #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Materials science #Nuclear Materials and Properties #Physical chemistry #Physics #Thermal and Kinetic Analysis #Thermal conductivity #Thermal conductivity measurement #Thermodynamics #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1609.05088
published in arXiv (Cornell University) (Cornell University)
openalex publication_date 2016/09/16 · openalex created_date 2016/09/30 · arxiv created 2016/10/13 · arxiv updated 2016/10/14 · openalex updated_date 2026/07/28
Thermal conductivity of the most abundant element in the planetary core, Iron (Fe) is measured up to Earth's outer core pressure ∼ 120 GPa. The measurements are carried out using the laser heated diamond anvil cell facility, where the absorbed power by Fe metal foil is calculated using thermodynamical equation. The thermal conductivity of γ-Fe linearly increases up to a maximum experimental pressure 40 GPa. Thermal conductivity of ε-Fe measured by us shows a saturated value ∼ 52 (± 5) Wm-1K-1 in the pressure range 77 - 120 GPa. At different pressures temperature dependence of thermal conductivity show a sharp drop during melting, which indicates the formation of liquid layer resulting in a thermal buffer to the heat conduction.