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Toward an internally consistent pressure scale
Our ability to interpret seismic observations including the seismic discontinuities and the density and velocity profiles in the earth's interior is critically dependent on the accuracy of pressureExpand
Electronic spin state of iron in lower mantle perovskite.
  • J. Li, V. Struzhkin, +7 authors G. Shen
  • Chemistry, Medicine
  • Proceedings of the National Academy of Sciences…
  • 28 September 2004
The electronic spin state of iron in lower mantle perovskite is one of the fundamental parameters that governs the physics and chemistry of the most voluminous and massive shell in the Earth. WeExpand
Ferromagnesian postperovskite silicates in the D'' layer of the Earth.
  • W. Mao, G. Shen, +6 authors H. Mao
  • Materials Science, Medicine
  • Proceedings of the National Academy of Sciences…
  • 9 November 2004
Natural olivine with 12 mol % Fe(2)SiO(4) and synthetic orthopyroxenes with 20% and 40% FeSiO(3) were studied beyond the pressure-temperature conditions of the core-mantle boundary. All samples wereExpand
Laser heated diamond cell system at the Advanced Photon Source for in situ x-ray measurements at high pressure and temperature
We describe a laser heated diamond anvil cell system at the GeoSoilEnviroCARS sector at the Advanced Photon Source. The system can be used for in situ x-ray measurements at simultaneously ultrahighExpand
A synchrotron Mössbauer spectroscopy study of (Mg,Fe)SiO3 perovskite up to 120 GPa
Abstract The electronic environment of the Fe nuclei in two silicate perovskite samples, Fe0.05Mg0.95SiO3 (Pv05) and Fe0.1Mg0.9SiO3 (Pv10), have been measured to 120 GPa and 75 GPa, respectively, atExpand
Melting and crystal structure of iron at high pressures and temperatures
High-pressure melting, phase transitions and structures of iron have been studied to 84 GPa and 3500 K with an improved laser heated diamond anvil cell technique and in situ high P-T x-rayExpand
Deformation of polycrystalline MgO at pressures of the lower mantle
[1] Room temperature investigations on the shear strength, elastic moduli, elastic anisotropy, and deformation mechanisms of MgO (periclase) are performed in situ up to pressures of 47 GPa usingExpand
Elasticity and rheology of iron above 220 GPa and the nature of the Earth's inner core
Recent numerical-modelling and seismological results have raised new questions about the dynamics, and magnetism, of the Earth's core. Knowledge of the elasticity and texture of iron, at coreExpand
In situ X-ray diffraction studies of iron to Earth-core conditions
Abstract The high-pressure, high-temperature behavior of iron has been investigated to 161 GPa and 3000 K by in situ synchrotron X-ray diffraction with double-side laser-heated diamond anvil cells.Expand
The stability and P–V–T equation of state of CaSiO3 perovskite in the Earth's lower mantle
Energy dispersive X-ray diffraction measurements for polycrystalline CaSiO3 perovskite were carried out at in situ transition zone and lower mantle P-T conditions (P = 18–96 GPa, T= 1238–2419 K)Expand