Equation of state of the hydrous phase δ-AlOOH at room temperature up to 22.5 GPa

Details Equation of state of the hydrous phase δ-AlOOH at room temperature up to 22.5 GPa Equation of state of the hydrous phase δ-AlOOH at room temperature up to 22.5 GPa

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29g..23v&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 7, pp. 23-1, CiteID 1119, DOI 10.1029/2001GL014224

Physics

7

Mineral Physics: Equations Of State, Mineral Physics: High-Pressure Behavior, Planetary Sciences: Interiors (8147), Tectonophysics: Planetary Interiors (5430, 5724)

Scientific paper

The equation of state of δAlOOH has been determined at room temperature up to 22.5 GPa by angle-dispersive x-ray diffraction using synchrotron radiation. The isothermal bulk modulus K0T was found to be 252 (+/-3) GPa, assuming that its pressure derivative K'0T is 4, by fitting a third order Birch-Murnaghan equation of state. δAlOOH is thus the least compressible hydrous phase known with compressibility comparable to that of corundum and stishovite, confirming that this phase can be stable at the lower mantle conditions.

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