X-ray diffraction of gamma-Fe at high temperatures and pressures

Details X-ray diffraction of gamma-Fe at high temperatures and pressures X-ray diffraction of gamma-Fe at high temperatures and pressures

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jap....65.1795b&link_type=abstract

Journal of Applied Physics (ISSN 0021-8979), vol. 65, Feb. 15, 1989, p. 1795-1797. Research supported by CNRS and University of

Physics

18

Electrical Measurement, Electrical Resistivity, Iron, Pressure Measurement, Temperature Measurement, X Ray Diffraction, Equations Of State, High Pressure, High Temperature, Luminescence, Shock Waves, Volt-Ampere Characteristics

Scientific paper

Wire heating in diamond-anvil cells has been used to measure the pressure, temperature, resistance, and X-ray diffraction patterns of gamma-Fe at pressures to 42 GPa and temperatures to 2340 K. The results can be described by a bulk modulus, K = 127 + or - 8 GPa + 2.2 (P/GPa). Extrapolation of these results to conditions of the earth's core yields a density in good agreement with shock compression and of about 15 percent higher than estimates of the preliminary reference earth model.

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