Electronic spin transitions and the seismic properties of ferrous iron-bearing MgSiO3 post-perovskite

Details Electronic spin transitions and the seismic properties of ferrous iron-bearing MgSiO3 post-perovskite Electronic spin transitions and the seismic properties of ferrous iron-bearing MgSiO3 post-perovskite

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3312s03s&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 12, CiteID L12S03

Physics

5

Geochemistry: Mineral And Crystal Chemistry (3620), Mineral Physics: Elasticity And Anelasticity, Seismology: Mantle (1212, 1213, 8124), Tectonophysics: Earth'S Interior: Composition And State (1212, 7207, 7208, 8105)

Scientific paper

The elastic constants of post-perovskite of chemical composition Mg0.9375Fe0.0625SiO3 and Mg0.8750Fe0.1250SiO3 have been calculated at 0 K and 136 GPa using ab initio methods. For both compositions studied, iron remains in a high-spin state below 180 GPa at 0 K. The effect of spin state on elastic properties is small. Logarithmic derivations of isotropic wave velocities and density with respect to ferrous iron content are similar to those predicted from pure end-members.

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