Journal
AMERICAN MINERALOGIST
Volume 103, Issue 1, Pages 85-90Publisher
MINERALOGICAL SOC AMER
DOI: 10.2138/am-2018-6072
Keywords
Sound velocity; Fe-Si alloy; high pressure; high temperature; inelastic X-ray scattering; inner core; Birch's law; silicon
Categories
Funding
- JSPS KAKENHI [15H05748, 26247089, 16H01112]
- Ministry of Education and Science of the Russian Federation [14.B25.31.0032]
- JSPS
- SPring-8 [2012A1255, 2012B1439, 2013A1377, 2013A1492, 2013B1078, 2013B1094, 2014A1100, 2014B1269, 2014B1465, 2015A1539, 2015A1627, 2015B1202, 2015B1334]
- Grants-in-Aid for Scientific Research [15H05831, 17K18797, 26247089, 16K13902, 15H05748, 16H01112, 17H04860] Funding Source: KAKEN
Ask authors/readers for more resources
The sound velocity of hcp Fe0.89Si0.11 (Fe-6wt% Si) alloy was measured at pressures from 45 to 84 GPa and temperatures of 300 and 1800 K using inelastic X-ray scattering (IXS) from laser-heated samples in diamond-anvil cells (DACs). The compressional velocity (v(P)) and density (rho) of the Fe-Si alloy are observed to follow a linear relationship at a given temperature. For hcp Fe0.89Si0.11 alloy we found v(P) = 1.030 (+/- 0.008) x rho - 1.45 (+/- 0.08) + [3.8 x 10(-5)(T - 300) x(rho - 15.37)], including non-negligible temperature dependence. The present results of sound velocity and density of hcp Fe0.89Si0.11 alloy indicates that 3 similar to 6 wt% of silicon in the inner core with additional amount of Ni can explain the compressional velocity (vP) and density (r) of the preliminary Earth reference model (PREM), assuming a temperature of 5500 K and that silicon is the only light element in the inner core
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
