• Publications
  • Influence
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
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Spin state of ferric iron in MgSiO3 perovskite and its effect on elastic properties
Abstract Recent studies have indicated that a significant amount of iron in MgSiO 3 perovskite (Pv) is Fe 3+ (Fe 3+ /ΣFe = 10–60%) due to crystal chemistry effects at high pressure ( P ) and that FeExpand
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Intermediate-spin ferrous iron in lower mantle perovskite
Iron has the ability to adopt different electronic configurations, and transitions in its spin state in the lower mantle can significantly influence mantle properties and dynamics. ExperimentalExpand
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Electronic spin state of iron in lower mantle perovskite.
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
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Ferromagnesian postperovskite silicates in the D'' layer of the Earth.
  • W. L. Mao, Guoyin Shen, +6 authors H. Mao
  • Medicine, Materials Science
  • 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
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DIOPTAS: a program for reduction of two-dimensional X-ray diffraction data and data exploration
TLDR
Dioptas is a Python-based program for on-the-fly data processing and exploration of two-dimensional X-ray diffraction area detector data, specifically designed for the large amount of data collected at XRD beamlines at synchrotrons. Expand
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Predominant Intermediate-Spin Ferrous Iron in Lowermost Mantle Post-Perovskite and Perovskite
The Earth’s lowermost mantle displays an important mineralogical transition from perovskite to post-perovskite but the spin state of iron in these phases remains poorly known. Experimental resultsExpand
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Effects of the Fe3 + spin transition on the properties of aluminous perovskite—New insights for lower-mantle seismic heterogeneities
Abstract We have measured the effects of the coupled substitution of Fe3 + and Al on the density and compressibility of mantle silicate perovskite (Pv) up to 95 GPa. X-ray emission spectroscopy andExpand
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The COMPRES/GSECARS gas-loading system for diamond anvil cells at the Advanced Photon Source
We have designed and constructed a new system for loading gases at high pressure into diamond anvil cells at pressures up to 200 MPa. The gases are used either as quasi-hydrostatic pressure mediaExpand
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BX90: a new diamond anvil cell design for X-ray diffraction and optical measurements.
We present a new design of a universal diamond anvil cell, suitable for different kinds of experimental studies under high pressures. Main features of the cell are an ultimate 90-degrees symmetricalExpand
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