Composition dependence of spin transition in (Mg,Fe)SiO3 bridgmanite

Dorfman, Susannah M.; Badro, James; Rueff, Jean -Pascal; Chow, Paul; Xiao, Yuming; Gillet, Philippe

doi:10.2138/am-2015-5190

Title: Composition dependence of spin transition in (Mg,Fe)SiO₃ bridgmanite

Journal Article · Thu Oct 01 00:00:00 EDT 2015 · American Mineralogist

DOI:https://doi.org/10.2138/am-2015-5190· OSTI ID:1335651

Dorfman, Susannah M. ^[1]; Badro, James ^[2]; Rueff, Jean -Pascal ^[3]; Chow, Paul ^[4]; Xiao, Yuming ^[4]; Gillet, Philippe ^[1]

Ecole Polytechnique Federale de Lausanne, Lausanne (Switzerland)
Ecole Polytechnique Federale de Lausanne, Lausanne (Switzerland); Univ. Paris Diderot, Paris (France)
Synchrotron SOLEIL, Gif-sur-Yvette (France)
Carnegie Inst. of Washington, Argonne, IL (United States)

Spin transitions in (Mg,Fe)SiO₃ bridgmanite have important implications for the chemistry and dynamics of Earth’s lower mantle, but have been complex to characterize in experiments. We examine the spin state of Fe in highly Fe-enriched bridgmanite synthesized from enstatites with measured compositions (Mg_0.61Fe_0.38Ca_0.01)SiO₃ and (Mg_0.25Fe_0.74Ca_0.01)SiO₃. Bridgmanite was synthesized at 78-88 GPa and 1800-2400 K and X-ray emission spectra were measured on decompression to 1 bar (both compositions) and compression to 126 GPa ((Mg_0.61Fe_0.38Ca_0.01)SiO₃ only) without additional laser heating. Observed spectra confirm that Fe in these bridgmanites is dominantly high spin in the lower mantle. However, the total spin moment begins to decrease at ~50 GPa in the 74% FeSiO₃ composition. Lastly, these results support density functional theory predictions of a lower spin transition pressure in highly Fe-enriched bridgmanite and potentially explain the high solubility of FeSiO₃ in bridgmanite at pressures corresponding to Earth’s deep lower mantle.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: Carnegie Institution of Washington, Washington, D.C. (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0002006

OSTI ID:: 1335651

Journal Information:: American Mineralogist, Vol. 100, Issue 10; ISSN 0003-004X

Publisher:: Mineralogical Society of AmericaCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 14 works

Citation information provided by
Web of Science

References (15)

Electronic spin transitions in iron-bearing MgSiO3 perovskite Stackhouse, Stephen; Brodholt, John P.; Price, G. David Earth and Planetary Science Letters, Vol. 253, Issue 1-2 https://doi.org/10.1016/j.epsl.2006.10.035	journal	January 2007
Element partitioning between magnesium silicate perovskite and ferropericlase: New insights into bulk lower-mantle geochemistry Auzende, Anne-Line; Badro, James; Ryerson, Frederick J. Earth and Planetary Science Letters, Vol. 269, Issue 1-2 https://doi.org/10.1016/j.epsl.2008.02.001	journal	May 2008
Effect of chemistry on the compressibility of silicate perovskite in the lower mantle Ballaran, Tiziana Boffa; Kurnosov, Alexander; Glazyrin, Konstantin Earth and Planetary Science Letters, Vol. 333-334 https://doi.org/10.1016/j.epsl.2012.03.029	journal	June 2012
Spin and structural transitions in AlFeO3 and FeAlO3 perovskite and post-perovskite Caracas, Razvan Physics of the Earth and Planetary Interiors, Vol. 182, Issue 1-2 https://doi.org/10.1016/j.pepi.2010.06.001	journal	September 2010
Probing the 3d Spin Momentum with X-ray Emission Spectroscopy: The Case of Molecular-Spin Transitions Vankó, György; Neisius, Thomas; Molnár, Gábor The Journal of Physical Chemistry B, Vol. 110, Issue 24 https://doi.org/10.1021/jp0615961	journal	June 2006
Partitioning of iron between perovskite/postperovskite and ferropericlase in the lower mantle Sinmyo, Ryosuke; Hirose, Kei; Nishio-Hamane, Daisuke Journal of Geophysical Research, Vol. 113, Issue B11 https://doi.org/10.1029/2008jb005730	journal	January 2008
Experimental evidence for the existence of iron-rich metal in the Earth's lower mantle Frost, Daniel J.; Liebske, Christian; Langenhorst, Falko Nature, Vol. 428, Issue 6981 https://doi.org/10.1038/nature02413	journal	March 2004
Effect of iron oxidation state on the electrical conductivity of the Earth’s lower mantle Potapkin, V.; McCammon, C.; Glazyrin, K. Nature Communications, Vol. 4, Issue 1 https://doi.org/10.1038/ncomms2436	journal	February 2013
Stable intermediate-spin ferrous iron in lower-mantle perovskite McCammon, C.; Kantor, I.; Narygina, O. Nature Geoscience, Vol. 1, Issue 10 https://doi.org/10.1038/ngeo309	journal	September 2008
Iron spin transition in Earth's mantle Speziale, S.; Milner, A.; Lee, V. E. Proceedings of the National Academy of Sciences, Vol. 102, Issue 50 https://doi.org/10.1073/pnas.0508919102	journal	December 2005
Spin Transition in Magnesiowüstite in Earth’s Lower Mantle Tsuchiya, Taku; Wentzcovitch, Renata M.; da Silva, Cesar R. S. Physical Review Letters, Vol. 96, Issue 19 https://doi.org/10.1103/physrevlett.96.198501	journal	May 2006
Metal-Ligand Interplay in Strongly Correlated Oxides: A Parametrized Phase Diagram for Pressure-Induced Spin Transitions Mattila, Aleksi; Rueff, Jean-Pascal; Badro, James Physical Review Letters, Vol. 98, Issue 19 https://doi.org/10.1103/physrevlett.98.196404	journal	May 2007
Electronic Transitions in Perovskite: Possible Nonconvecting Layers in the Lower Mantle Badro, J. Science, Vol. 305, Issue 5682 https://doi.org/10.1126/science.1098840	journal	July 2004
Magnetic Collapse in Transition Metal Oxides at High Pressure: Implications for the Earth Cohen, R. E. Science, Vol. 275, Issue 5300 https://doi.org/10.1126/science.275.5300.654	journal	January 1997
Identifying the spin transition in Fe2+-rich MgSiO3 perovskite from X-ray diffraction and vibrational spectroscopy Caracas, R.; Ozawa, H.; Hirose, K. American Mineralogist, Vol. 99, Issue 7 https://doi.org/10.2138/am.2014.4783	journal	July 2014

Cited By (3)

Abnormal Elasticity of Fe-Bearing Bridgmanite in the Earth's Lower Mantle Fu, Suyu; Yang, Jing; Zhang, Yanyao Geophysical Research Letters, Vol. 45, Issue 10 https://doi.org/10.1029/2018gl077764	journal	May 2018
First‐Principles Study of Thermodynamics and Spin Transition in FeSiO ₃ Liquid at High Pressure Sun, Yicheng; Zhou, Huiqun; Yin, Kun Geophysical Research Letters, Vol. 46, Issue 7 https://doi.org/10.1029/2018gl081421	journal	April 2019
The GALAXIES inelastic hard X-ray scattering end-station at Synchrotron SOLEIL Ablett, J. M.; Prieur, D.; Céolin, D. Journal of Synchrotron Radiation, Vol. 26, Issue 1 https://doi.org/10.1107/s160057751801559x	journal	January 2019

Similar Records

Synthesis, Elasticity, and Spin State of an Intermediate MgSiO₃-FeAlO₃ Bridgmanite: Implications for Iron in Earth's Lower Mantle

Journal Article · Mon Jul 20 00:00:00 EDT 2020 · Journal of Geophysical Research. Solid Earth · OSTI ID:1335651

Zhu, Feng; Liu, Jiachao; Lai, Xiaojing; +7 more

Effects of composition and pressure on electronic states of iron in bridgmanite

Journal Article · Wed Jul 01 00:00:00 EDT 2020 · American Mineralogist · OSTI ID:1335651

Dorfman, Susannah M.; Potapkin, Vasily; Lv, Mingda; +11 more

Effects of the Fe³⁺ spin transition on the equation of state of bridgmanite

Journal Article · Mon May 18 00:00:00 EDT 2015 · Geophysical Research Letters · OSTI ID:1335651

Mao, Zhu; Lin, Jung‐Fu; Yang, Jing; +2 more

Related Subjects

58 GEOSCIENCES
bridgmanite
spin transition
iron-bearing silicates
lower mantle

Title: Composition dependence of spin transition in (Mg,Fe)SiO3 bridgmanite

Citation Formats

References (15)

Cited By (3)

Similar Records

Related Subjects

Title: Composition dependence of spin transition in (Mg,Fe)SiO₃ bridgmanite