Startseite Hydrogen occupation and hydrogen-induced volume expansion in Fe0.9Ni0.1Dx at high P-T conditions
Artikel
Lizenziert
Nicht lizenziert Erfordert eine Authentifizierung

Hydrogen occupation and hydrogen-induced volume expansion in Fe0.9Ni0.1Dx at high P-T conditions

  • Chikara Shito , Hiroyuki Kagi ORCID logo EMAIL logo , Sho Kakizawa , Katsutoshi Aoki , Kazuki Komatsu , Riko Iizuka-Oku , Jun Abe , Hirioyuki Saitoh , Asami Sano-Furukawa ORCID logo und Takanori Hattori
Veröffentlicht/Copyright: 30. März 2023
Veröffentlichen auch Sie bei De Gruyter Brill
Informationen für Autor*innen
American Mineralogist
Aus der Zeitschrift American Mineralogist Band 108 Heft 4

Abstract

The density of the Earth’s core is several percent lower than that of iron-nickel alloy under conditions of pressure and temperature equivalent to the Earth’s core. Hydrogen is one of the most promising constituents accounting for the density deficit, but hydrogen occupation sites and density decrease of iron-nickel alloy caused by hydrogenation have never been investigated. In this study, the phase relation and crystal structure of Fe0.9Ni0.1Hx(Dx) at high pressures and temperatures up to 12 GPa and 1000 K were clarified by in situ X-ray diffraction and neutron diffraction measurements. Under the P-T conditions of the present study, no deuterium atoms occupied tetragonal (T) sites of face-centered cubic (fcc) Fe0.9Ni0.1Dx, although the T-site occupation was previously reported for fcc FeHx(Dx). The deuterium-induced volume expansion per deuterium vD was determined to be 2.45(4) and 3.31(6) Å3 for fcc and hcp Fe0.9Ni0.1Dx, respectively. These vD values are significantly larger than the corresponding values for FeDx. The vD value for fcc Fe0.9Ni0.1Dx slightly increases with increasing temperature. This study suggests that only 10% of nickel in iron drastically changes the behaviors of hydrogen in metal. Assuming that vD is constant regardless of pressure, the maximum hydrogen content in the Earth’s inner core is estimated to be one to two times the amount of hydrogen in the oceans.

Keywords: Neutron diffraction; high pressure; metal hydride; Earth’s core; Physics and Chemistry of Earth’s Deep Mantle and Core

§ Special collection papers can be found online at http://www.minsocam.org/MSA/AmMin/special-collections.html.

‡ Present address: Research and Utilization Division, Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Hyogo 679-5198, Japan

Acknowledgments and Funding

We are thankful to Hirotada Gotou for his technical support on X-ray and neutron diffraction experiments. We are grateful to the two anonymous reviewers whose comments greatly helped us to improve the manuscript. Neutron diffraction experiments were performed at the MLF of the J-PARC (Proposal Nos. 2020A0125 and 2020B0446). This study was supported by JSPS KAKENHI (Grant No. 18H05224).

References cited

Anderson, D.L. (1989) Composition of the Earth. Science, 243, 367–370, https://doi.org/10.1126/science.243.4889.367Suche in Google Scholar

Anderson, O.L. and Isaak, D.G. (2002) Another look at the core density deficit of Earth’s outer core. Physics of the Earth and Planetary Interiors, 131, 19–27, https://doi.org/10.1016/S0031-9201(02)00017-1Suche in Google Scholar

Antonov, V.E., Belash, I.T., and Ponyatovsky, E.G. (1982) T-P phase diagram of the Fe-H system at temperatures to 450 °C and pressures to 6.7 GPa. Scripta Metallurgica, 16, 203–208, https://doi.org/10.1016/0036-9748(82)90387-8Suche in Google Scholar

Antonov, V.E., Bulychev, B.M., Fedotov, V.K., Kapustin, D.I., Kulakov, V.I., and Sholin, I.A. (2017) NH3BH3 as an internal hydrogen source for high pressure experiments. International Journal of Hydrogen Energy, 42, 22454–22459, https://doi.org/10.1016/j.ijhydene.2017.03.121Suche in Google Scholar

Anzellini, S., Dewaele, A., Mezouar, M., Loubeyre, P., and Morard, G. (2013) Melting of iron at Earth’s inner core boundary based on fast X-ray diffraction. Science, 340, 464–466, https://doi.org/10.1126/science.1233514Suche in Google Scholar

Birch, F. (1952) Elasticity and constitution of the Earth’s interior. Journal of Geophysical Research, 57, 227–286, https://doi.org/10.1029/JZ057i002p00227Suche in Google Scholar

Brown, J.M. (1999) The NaCl pressure standard. Journal of Applied Physics, 86, 5801–5808, https://doi.org/10.1063/1.371596Suche in Google Scholar

Bundy, F.P. (1965) Pressure–temperature phase diagram of iron to 200 kbar, 900 °C. Journal of Applied Physics, 36, 616–620, https://doi.org/10.1063/1.1714038Suche in Google Scholar

Caracas, R. (2015) The influence of hydrogen on the seismic properties of solid iron. Geophysical Research Letters, 42, 3780–3785, https://doi.org/10.1002/2015GL063478Suche in Google Scholar

Dewaele, A. (2019) Equation state of simple solids (including Pb, NaCl and LiF) compressed in helium or neon in the Mbar range. Minerals (Basel), 9, 684, https://doi.org/10.3390/min9110684Suche in Google Scholar

Dorogokupets, P.I. and Dewaele, A. (2007) Equations of state of MgO, Au, Pt NaCl-B1, and NaCl-B2: Internally consistent high-temperature pressure scales. High Pressure Research, 27, 431–446, https://doi.org/10.1080/08957950701659700Suche in Google Scholar

Dziewonski, A.M. and Anderson, D.L. (1981) Preliminary reference Earth model. Physics of the Earth and Planetary Interiors, 25, 297–356, https://doi.org/10.1016/0031-9201(81)90046-7Suche in Google Scholar

Fei, Y. (1995) Thermal expansion. In T.J. Ahrens, Ed., Mineral Physics and Crystallography: A Handbook of Physical Constants, vol. 2, p. 29–44. AGU.Suche in Google Scholar

Fei, Y. and Brosh, E. (2014) Experimental study and thermodynamic calculations of phase relations in the Fe-C system at high pressure. Earth and Planetary Science Letters, 408, 155–162, https://doi.org/10.1016/j.epsl.2014.09.044Suche in Google Scholar

Fei, Y., Murphy, C., Shibazaki, Y., Shahar, Y., and Huang, H. (2016) Thermal equation of state of hcp-iron: Constraint on the density deficit of Earth’s solid inner core. Geophysical Research Letters, 43, 6837–6843, https://doi.org/10.1002/2016GL069456Suche in Google Scholar

Fischer, R.A., Campbell, A.J., Reaman, D.M., Miller, N.A., Heinz, D.L., Dera, P., and Prakapenka, V.B. (2013) Phase relations in the Fe–FeSi system at high pressures and temperatures. Earth and Planetary Science Letters, 373, 54–64, https://doi.org/10.1016/j.epsl.2013.04.035Suche in Google Scholar

Fricker, P.E. and Reynolds, R.T. (1968) Development of the atmosphere of Venus. Icarus, 9, 221–230, https://doi.org/10.1016/0019-1035(68)90017-1Suche in Google Scholar

Frueh, S., Kellett, R., Mallery, C., Molter, T., Willis, W.S., King’ondu, C., and Suib, S.L. (2011) Pyrolytic decomposition of ammonia borane to boron nitride. Inorganic Chemistry, 50, 783–792, https://doi.org/10.1021/ic101020kSuche in Google Scholar

Fukai, Y. (2005) The Metal-Hydrogen System: Basic Bulk Properties, 2nd rev. and updated ed., 500 p. Springer.Suche in Google Scholar

Fukai, Y., Mori, K., and Shinomiya, H. (2003) The phase diagram and superabundant vacancy formation in Fe-H alloys under high hydrogen pressures. Journal of Alloys and Compounds, 348, 105–109, https://doi.org/10.1016/S0925-8388(02)00806-XSuche in Google Scholar

Gilbert, A. and Owen, W.S. (1962) Diffusionless transformation in iron-nickel, iron-chromium and iron-silicon alloys. Acta Metallurgica, 10, 45–54, https://doi.org/10.1016/0001-6160(62)90185-2Suche in Google Scholar

Gonzalez-Platas, J., Alvaro, M., Nestola, F., and Angel, R.J. (2016) EosFit7-GUI: A new graphical user interface tool for equation of state calculations, analyses and teaching. Journal of Applied Crystallography, 49, 1377–1382, https://doi.org/10.1107/S1600576716008050Suche in Google Scholar

Hattori, T., Sano-Furukawa, A., Arima, H., Komatsu, K., Yamada, A., Inamura, Y., Nakatani, T., Seto, Y., Nagai, T., Utsumi, W., and others. (2015) Design and performance of high-pressure PLANET beamline at pulsed neutron source at J-PARC. Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, 780, 55–67, https://doi.org/10.1016/j.nima.2015.01.059Suche in Google Scholar

Iizuka-Oku, R., Yagi, T., Gotou, H., Okuchi, T., Hattori, T., and Sano-Furukawa, A. (2017) Hydrogenation of iron in the early stage of Earth’s evolution. Nature Communications, 8, 14096, https://doi.org/10.1038/ncomms14096Suche in Google Scholar

Ikuta, D., Ohtani, E., Sano-Furukawa, A., Shibazaki, Y., Terasaki, H., Yuan, L., and Hattori, T. (2019) Interstitial hydrogen atoms in face-centered cubic iron in the Earth’s core. Scientific Reports, 9, 7108, https://doi.org/10.1038/s41598-019-43601-zSuche in Google Scholar

Kato, C., Umemoto, K., Ohta, K., Tagawa, S., Hirose, K., and Ohishi, Y. (2020) Stability of fcc phase FeH to 137 GPa. American Mineralogist, 105, 917–921, https://doi.org/10.2138/am-2020-7153Suche in Google Scholar

Larson, A.C. and Von Dreele, R.B. (2004) General structure analysis system (GSAS). Los Alamos National Laboratory Report LAUR, 86-748.Suche in Google Scholar

Machida, A., Saitoh, H., Sugimoto, H., Hattori, T., Sano-Furukawa, A., Endo, N., Katayama, Y., Iizuka, R., Sato, T., Matsuo, M., and others. (2014) Site occupancy of interstitial deuterium atoms in face-centred cubic iron. Nature Communications, 5, 5063, https://doi.org/10.1038/ncomms6063Suche in Google Scholar

Machida, A., Saitoh, H., Hattori, T., Sano-Furukawa, A., Funakoshi, K.I., Sato, T., Orimo, S.I., and Aoki, K. (2019) Hexagonal close-packed iron hydride behind the conventional phase diagram. Scientific Reports, 9, 12290, https://doi.org/10.1038/s41598-019-48817-7Suche in Google Scholar

Momma, K. and Izumi, F. (2011) VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data. Journal of Applied Crystallography, 44, 1272–1276, https://doi.org/10.1107/S0021889811038970Suche in Google Scholar

Mori, Y., Ozawa, H., Hirose, K., Sinmyo, R., Tateno, S., Morard, G., and Ohishi, Y. (2017) Melting experiments on Fe-Fe3S system to 254 GPa. Earth and Planetary Science Letters, 464, 135–141, https://doi.org/10.1016/j.epsl.2017.02.021Suche in Google Scholar

Ohta, K., Suehiro, S., Hirose, K., and Ohishi, Y. (2019) Electrical resitivity of fcc phase iron hydrides at high pressure and temperatures. Comptes Rendus Geoscience, 351, 147–153, https://doi.org/10.1016/j.crte.2018.05.004Suche in Google Scholar

Okuchi, T. (1997) Hydrogen partitioning into molten iron at high pressure: Implications for Earth’s core. Science, 278, 1781–1784, https://doi.org/10.1126/science.278.5344.1781Suche in Google Scholar

Saitoh, H., Machida, A., Hattori, T., Sano-Furukawa, A., Funakoshi, K., Sato, T., Orimo, S., and Aoki, K. (2020) Neutron diffraction study on the deuterium composition of nickel deuteride at high temperatures and high pressures. Physica B, Condensed Matter, 587, 412153, https://doi.org/10.1016/j.physb.2020.412153Suche in Google Scholar

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, https://doi.org/10.1016/j.pepi.2013.12.010Suche in Google Scholar

Sakamaki, T., Ohtani, E., Fukui, H., Kamada, S., Takahashi, S., Sakairi, T., Takahata, A., Sakai, T., Tsutsui, S., Ishikawa, D., and others. (2016) Constraints on Earth’s inner core composition inferred from measurements of the sound velocity of hcp-iron in extreme conditions. Science Advances, 2, e1500802, https://doi.org/10.1126/sciadv.1500802Suche in Google Scholar

Sano-Furukawa, A., Hattori, T., Arima, H., Yamada, A., Tabata, S., Kondo, M., Nakamura, A., Kagi, H., and Yagi, T. (2014) Six-axis multi-anvil press for high-pressure, high-temperature neutron diffraction experiments. The Review of Scientific Instruments, 85, 113905, https://doi.org/10.1063/1.4901095Suche in Google Scholar

Seagle, C.T., Heinz, D.L., Campbell, A.J., Prakapenka, V.B., and Wanless, S.T. (2008) Melting and thermal expansion in the Fe-FeO system at high pressure. Earth and Planetary Science Letters, 265, 655–665, https://doi.org/10.1016/j.epsl.2007.11.004Suche in Google Scholar

Swartzendruber, L.J., Itkin, V.P., and Alcock, C.B. (1991) The Fe-Ni (iron-nickel) system. Journal of Phase Equilibria, 12, 288–312, https://doi.org/10.1007/BF02649918Suche in Google Scholar

Tagawa, S., Sakamoto, N., Hirose, K., Yokoo, S., Hernlund, J., Ohishi, Y., and Yurimoto, H. (2021) Experimental evidence for hydrogen incorporation into Earth’s core. Nature Communications, 12, 2588, https://doi.org/10.1038/s41467-021-22035-0Suche in Google Scholar

Tagawa, S., Gomi, H., Hirose, K., and Ohishi, Y. (2022) High-temperature equation of state of FeH: Implications for hydrogen in Earth’s inner core. Geophysical Research Letters, 49, e2021GL09620. http://doi.org/10.1029/2021GL096260.http://doi.org/10.1029/2021GL096260Suche in Google Scholar

Terasaki, H. and Fischer, R.A. (2016) Deep Earth: Physics and Chemistry of the Lower Mantle and Core, 1st ed., 312 p. Geophysical Monograph, vol. 217. Wiley.Suche in Google Scholar

Toby, B.H. (2001) EXPGUI, a graphical user interface for GSAS. Journal of Applied Crystallography, 34, 210–213, https://doi.org/10.1107/S0021889801002242Suche in Google Scholar

Torchio, R., Boccato, S., Miozzi, F., Rosa, A.D., Ishimatsu, N., Kantor, I., Sévelin-Radiguet, N., Meneghini, C., Irifune, T., and Morard, G. (2020) Melting curve and phase relations of Fe-Ni alloys: Implications for the Earth’s core composition. Geophysical Research Letters, 47, e2020GL088169, https://doi.org/10.1029/2020GL088169Suche in Google Scholar

Tsujino, N., Nishihara, Y., Nakajima, Y., Takahashi, E., Funakoshi, K., and Higo, Y. (2013) Equation of state of γ-Fe: Reference density for planetary cores. Earth and Planetary Science Letters, 375, 244–253, https://doi.org/10.1016/j.epsl.2013.05.040Suche in Google Scholar
Received: 2021-10-13
Accepted: 2022-04-21
Published Online: 2023-03-30
Published in Print: 2023-04-25

© 2023 by Mineralogical Society of America

Artikel in diesem Heft

  1. Mineralogy and geochemistry of hot spring deposits at Námafjall, Iceland: Analog for sulfate soils at Gusev crater, Mars
  2. The iron spin transition of deep nitrogen-bearing mineral Fe3N1.2 at high pressure
  3. Hydrogen occupation and hydrogen-induced volume expansion in Fe0.9Ni0.1Dx at high P-T conditions
  4. Volumes and spin states of FeHx: Implication for the density and temperature of the Earth’s core
  5. Thermodynamic characterization of synthetic lead-arsenate apatites with different halogen substitutions
  6. Structural changes in shocked tektite and their implications to impact-induced glass formation
  7. Characterization of vandenbrandeite: A potential alteration product of spent nuclear fuel
  8. The NaCl-CaCO3 and NaCl-MgCO3 systems at 6 GPa: Link between saline and carbonatitic diamond forming melts
  9. Single-crystal elasticity of (Al,Fe)-bearing bridgmanite up to 82 GPa
  10. Single-crystal X-ray diffraction of fluorapatite to 61 GPa
  11. Iron and aluminum substitution mechanism in the perovskite phase in the system MgSiO3-FeAlO3-MgO
  12. Ultrasonic studies of alkali-rich hydrous silicate glasses: Elasticity, density, and implications for water dissolution mechanisms
  13. Gadolinium-dominant monazite and xenotime: Selective hydrothermal enrichment of middle REE during low-temperature alteration of uraninite, brannerite, and fluorapatite (the Zimná Voda REE-U-Au quartz vein, Western Carpathians, Slovakia)
  14. Nucleation of Th-rich cerianite on halloysite surface in a regolith-hosted rare earth elements deposit in South China
  15. Presentation of the Dana Medal of the Mineralogical Society of America for 2022 to Cin-Ty Lee
  16. Acceptance of the Dana Medal of the Mineralogical Society of America for 2022
  17. Presentation of the Mineralogical Society of America Award for 2022 to Benjamin M. Tutolo
  18. Acceptance of the Mineralogical Society of America Award for 2022
  19. Presentation of the 2022 Roebling Medal of the Mineralogical Society of America to John W. Valley
  20. Acceptance of the 2022 Roebling Medal of the Mineralogical Society of America
  21. New Mineral Names
  22. Book Review
https://doi.org/10.2138/am-2022-8348
Schlagwörter für diesen Artikel
Neutron diffraction; high pressure; metal hydride; Earth’s core; Physics and Chemistry of Earth’s Deep Mantle and Core

Artikel in diesem Heft

  1. Mineralogy and geochemistry of hot spring deposits at Námafjall, Iceland: Analog for sulfate soils at Gusev crater, Mars
  2. The iron spin transition of deep nitrogen-bearing mineral Fe3N1.2 at high pressure
  3. Hydrogen occupation and hydrogen-induced volume expansion in Fe0.9Ni0.1Dx at high P-T conditions
  4. Volumes and spin states of FeHx: Implication for the density and temperature of the Earth’s core
  5. Thermodynamic characterization of synthetic lead-arsenate apatites with different halogen substitutions
  6. Structural changes in shocked tektite and their implications to impact-induced glass formation
  7. Characterization of vandenbrandeite: A potential alteration product of spent nuclear fuel
  8. The NaCl-CaCO3 and NaCl-MgCO3 systems at 6 GPa: Link between saline and carbonatitic diamond forming melts
  9. Single-crystal elasticity of (Al,Fe)-bearing bridgmanite up to 82 GPa
  10. Single-crystal X-ray diffraction of fluorapatite to 61 GPa
  11. Iron and aluminum substitution mechanism in the perovskite phase in the system MgSiO3-FeAlO3-MgO
  12. Ultrasonic studies of alkali-rich hydrous silicate glasses: Elasticity, density, and implications for water dissolution mechanisms
  13. Gadolinium-dominant monazite and xenotime: Selective hydrothermal enrichment of middle REE during low-temperature alteration of uraninite, brannerite, and fluorapatite (the Zimná Voda REE-U-Au quartz vein, Western Carpathians, Slovakia)
  14. Nucleation of Th-rich cerianite on halloysite surface in a regolith-hosted rare earth elements deposit in South China
  15. Presentation of the Dana Medal of the Mineralogical Society of America for 2022 to Cin-Ty Lee
  16. Acceptance of the Dana Medal of the Mineralogical Society of America for 2022
  17. Presentation of the Mineralogical Society of America Award for 2022 to Benjamin M. Tutolo
  18. Acceptance of the Mineralogical Society of America Award for 2022
  19. Presentation of the 2022 Roebling Medal of the Mineralogical Society of America to John W. Valley
  20. Acceptance of the 2022 Roebling Medal of the Mineralogical Society of America
  21. New Mineral Names
  22. Book Review
Jetzt anmelden und 20% sparen
Institutioneller Zugang
Wie funktioniert Authentifizierung?
Haben Sie eine Idee, wie wir unsere Website verbessern können?
Bitte schreiben Sie uns.
© 2025 De Gruyter Brill
Heruntergeladen am 17.9.2025 von https://www.degruyterbrill.com/document/doi/10.2138/am-2022-8348/html
Button zum nach oben scrollen