Инд. авторы:	Sakairi T., Sakamaki T., Ohtani E., Fukui H., Kamada S., Tsutsui S., Uchiyama H., Baron A.Q.R.
Заглавие:	Sound velocity measurements of hcp Fe-Si alloy at high pressure and high temperature by inelastic X-ray scattering
Библ. ссылка:	Sakairi T., Sakamaki T., Ohtani E., Fukui H., Kamada S., Tsutsui S., Uchiyama H., Baron A.Q.R. Sound velocity measurements of hcp Fe-Si alloy at high pressure and high temperature by inelastic X-ray scattering // American Mineralogist. - 2018. - Vol.103. - Iss. 1. - P.85-90. - ISSN 0003-004X. - EISSN 1945-3027.
Внешние системы:	DOI: 10.2138/am-2018-6072; РИНЦ: 35486725; SCOPUS: 2-s2.0-85040358618; WoS: 000426312800008;
Реферат:	eng: The sound velocity of hcp Fe0.89Si0.11 (Fe-6wt% Si) alloy was measured at pressures from 45 to 84 GPa and temperatures of 300 and 1800 K using inelastic X-ray scattering (IXS) from laser-heated samples in diamond-anvil cells (DACs). The compressional velocity (v(P)) and density (rho) of the Fe-Si alloy are observed to follow a linear relationship at a given temperature. For hcp Fe0.89Si0.11 alloy we found v(P) = 1.030 (+/- 0.008) x rho - 1.45 (+/- 0.08) + [3.8 x 10(-5)(T - 300) x(rho - 15.37)], including non-negligible temperature dependence. The present results of sound velocity and density of hcp Fe0.89Si0.11 alloy indicates that 3 similar to 6 wt% of silicon in the inner core with additional amount of Ni can explain the compressional velocity (vP) and density (r) of the "preliminary Earth reference model" (PREM), assuming a temperature of 5500 K and that silicon is the only light element in the inner core
Ключевые слова:	inner core; Birch's law; EARTHS INNER-CORE; NI; STATE; IRON; ELASTIC PROPERTIES; silicon; high temperature; high pressure; Fe-Si alloy; Sound velocity; inelastic X-ray scattering;
Издано:	2018
Физ. характеристика:	с.85-90
Цитирование:	1. Antonangeli, D., and Ohtani, E. (2015) Sound velocity of hcp-Fe at high pressure: experimental constraints, extrapolations and comparison with seismic models. Progress in Earth and Planetary Science, 2, 3, DOI: 10.1186/s40645-015-0034-9. 2. Antonangeli, D., Siebert, J., Badro, J., Farber, D.L., Fiquet, G., Morard, G., and Ryerson, F.J. (2010) Composition of the Earth's inner core from high-pressure sound velocity measurements in Fe-Ni-Si alloys. Earth and Planetary Science Letters, 295, 292-296. 3. Badro, J., Fiquet, G., Guyot, F., Gregoryanz, E., Occelli, F., Antonangeli, D., and d'Astuto, M. (2007) Effect of light elements on the sound velocities in solid iron: implications for the composition of Earth's core. Earth and Planetary Science Letters, 254, 233-238. 4. Baron, A.Q.R., Tanaka, Y., Goto, S., Takeshita, K., Matsushita, T., and Ishikawa, D. (2000) An X?ray scattering beamline for studying dynamics. Journal of Physics and Chemistry of Solids, 61, 461-465. 5. Birch, F. (1961) Composition of the Earth's Mantle. Geophysical Journal International, 4, 295-311. 6. - (1964) Density and composition of mantle and core. Journal of Geophysical Research, 69, 4377-4388. 7. Brown, J.M., and McQueen, R.G. (1986) Phase transitions Grüneisen parameter and elasticity for shocked iron between 77 GPa and 400 GPa. Journal of Geophysical Research, 91, 7485-7494. 8. Dziewonski, A.M., and Anderson, D.L. (1981) Preliminary reference Earth model. Physics of the Earth and Planetary Interiors, 25, 297-356. 9. Fiquet, G., Badro, J., Guyot, F., Bellin, C., Krisch, M., Antonangeli, D., Requardt, H., Mermet, A., Farber, D., Aracne-Ruddle, C., and Zhang, J. (2004) Application of inelastic X?ray scattering to the measurements of acoustic wave velocities in geophysical materials at very high pressure. Physics of the Earth and Planetary Interiors, 143-144, 5-18. 10. Fischer, R.A., Campbell, A.J., Caracas, R., Reaman, D.M., Heinz, D.L., Dera, P., and Prakapenka, V.B. (2014) Equation of state in the Fe-FeSi system at high pressures and temperatures. Journal of Geophysical Research, 119, 2810-2817. 11. Fukui, H., Sakai, T., Sakamaki, T., Kamada, S., Takahashi, S., Ohtani, E., and Baron, A.Q.R. (2013) A compact system for generating extreme pressures and temperatures: An application of laser-heated diamond anvil cell to inelastic X?ray scattering. Review of Scientific Instruments, 84, 113902. 12. Ishikawa, D., Uchiyama, H., Tsutsui, S., Fukui, H., and Baron, A.Q.R. (2013) Compound focusing for hard-X?ray inelastic scattering. Proceedings of SPIE 8848, Advances in X?ray/EUV Optics and Components VIII, 88489F. 13. Liebermann, R.C., and Ringwood, A.E. (1973) Birch's law and polymorphic phase transformations. Journal of Geophysical Research, 78, 6926-6932. 14. Lin, J.F., Struzhkin, V.V., Sturhahn, W., Huang, E., Zhao, J., Hu, M.Y., Alp, E.E., Mao, H.K., Boctor, N., and Hemley R.J. (2003) Sound velocities of iron-nickel and iron-silicon alloys at high pressures. Geophysical Research Letters, 30, 2112, DOI: 10.1029/2003GL018405. 15. Liu, J., Lin, J.F., Alatas, A., and Bi, W. (2014) Sound velocities of bcc-Fe and Fe0.85Si0.15 alloy at high pressure and temperature. Physics of the Earth and Planetary Interiors, 233, 24-32. 16. Liu, J., Lin, J.F., Alatas, A., Hu, M.Y., Zhao, J., and Dubrovinsky, L. (2016) Seismic parameters of hcp-Fe alloyed with Ni and Si in the Earth's inner core. Journal of Geophysical Research, 121, 610-623. 17. Mao, Z., Lin, J.F., Liu, J., Alatas, A., Gao, L., Zhao, J., and Mao, H.K. (2012) Sound velocities of Fe and Fe-Si alloy in the Earth's core. Proceedings of the National Academy of Sciences, 109, 10239-10244. 18. Martorell, B., Brodholt, J.B., Wood, I.G., and Vo?adlo, L. (2013a) The effect of nickel on the properties of iron at the conditions of Earth's inner core: Ab initio calculations of seismic wave velocities of Fe-Ni alloys. Earth and Planetary Science Letters, 356, 143-151. 19. Martorell, B., Vo?adlo, L., Brodholt, J.B., and Wood, I.G. (2013b) Strong premelting effect in the elastic properties of hcp-Fe under inner-core conditions. Science, 342, 466-468. 20. Martorell, B., Wood, I.G., Brodholt, J.B., and Vo?adlo, L. (2016) The elastic properties of hcp-Fe1-xSix at Earth's inner-core conditions. Earth and Planetary Science Letters, 451, 89-96. 21. Masters, G. (1979) Observational constraints on the chemical and thermal structure of the Earth's deep interior. Geophysical Journal International, 57, 507-534. 22. McDonough, W.F. (2003) Compositional model for the Earth's core. In R.W. Carlson, Ed., Treatise of Geochemistry, 2, p. 547-568, Elsevier-Pergamon, Oxford. 23. Ohtani, E., Shibazaki, Y., Sakai, T., Mibe, K., Fukui, H., Kamada, S., Sakamaki, T., Seto, Y., Tsutsui, S., and Baron, A.Q.R. (2013) Sound velocity of hexagonal close-packed iron up to core pressures. Geophysical Research Letters, 40, 5089-5094. 24. Sakai, T., Takahashi, S., Nishitani, N., Mashino, I., Ohtani, E., and Hirao, N. (2014) Equation of state of pure iron and Fe0.9Ni0.1 alloy up to 3 Mbar. Physics of the Earth and Planetary Interiors, 228, 114-126. 25. Sakamaki, T., Ohtani, E., Fukui, H., Kamada, S., Takahashi, S., Sakairi, T., Takahata, A., Sakai, T., Tsutsui, S., Ishikawa, D., Shiraishi, R., Seto, Y., Tsuchiya, T., and Baron, A.Q.R. (2016) Constraints on the Earth's inner core composition inferred from measurements of the sound velocity of hcp-iron in extreme conditions. Science Advances, 2, e1500802, DOI: 10.1126/sciadv.1500802. 26. Tateno, S., Hirose, H., Ohishi, Y., and Tatsumi, Y. (2010) The structure of iron in Earth's inner core. Science, 330, 359-361. 27. Tateno, S., Kuwayama, Y., Hirose, H., and Ohishi, Y. (2015) The structure of Fe-Si alloy in Earth's inner core. Earth and Planetary Science Letters, 418, 11-19. 28. Terasaki, H., Kamada, S., Sakai, T., Ohtani, E., Hirao, N., and Ohishi, Y. (2011) Liquidus and solidus temperature of a Fe-O-S alloy up to the pressures of the outer core: Implication for the thermal structure of the Earth's core. Earth and Planetary Science Letters, 232, 379-392. 29. Tsuchiya, T., and Fujibuchi, M. (2009) Effects of Si on the elastic property of Fe at Earth's inner core pressures: First principle study. Physics of the Earth and Planetary Interiors, 174, 212-219. 30. Vo?adlo, L., Dobson, D.P., and Wood, I.G. (2009) Ab initio calculations of the elasticity of hcp-Fe as a function of temperature at inner-core pressure. Earth and Planetary Science Letters, 288, 534-538.