High-pressure melting of iron: New experiments and calculations

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

Volumn 354, Issue 1711, 1996, Pages 1251-1263

  Chen, George Q ^a   Ahrens, Thomas J ^a  

^a CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CORE; IRON; MELTING; P/T CONDITIONS; PRESSURE; THERMODYNAMICS;

EID: 0030455071     PISSN: 1364503X     EISSN: None     Source Type: Journal    
DOI: 10.1098/rsta.1996.0047     Document Type: Article

References (26)

1. Anderson, O. L. 1994 Imperfections of the 1993 phase diagram of iron. In High pressure science and technology - 1993 (ed. S. C. Schmidt, J. W. Shaner, G. A. Samara & M. Ross) pp. 907-910. New York: American Institute of Physics Press.
2. Anderson, W. W. & Ahrens, T. J. 1994 An equation of state for liquid iron and implications for the Earth's core. J. Geophys. Res. 99, 4273-4284.
3. Anderson, W. W. & Ahrens, T. J. 1996 Shock temperatures and melting in iron sulfides at core pressures. J. Geophys. Res. (In the press.)
4. Andrews, D. J. 1973 Equation of state of the alpha and epsilon phases of iron. J. Phys. Chem. Solids 34, 825-840.
5. Bass, J. D., Svendsen, B. & Ahrens, T. J. 1987 The temperatures of shock-compressed iron. In High pressure research in mineral physics (ed. M. Manghnani & Y. Syono), pp. 393-402. Tokyo: Terra.
6. Besson, J. M. & Nicol, M. 1990 An equation of state of γ-Fe and some insights about magnetoelastic effects on measurements of the α-γ-∈ triple point and other transitions. J. Geophys. Res. 95, 21 717-21 720.
7. Boehler, R. 1993 Temperatures in the Earth's core from melting-point measurements of iron at high static pressures. Nature 363, 534-530.
8. Boehler, R., Besson, J. M., Nicol, M., Nielsen, M., Itie, J. P., Weill, G., Johnson, S. & Grey, F. 1989 X-ray diffraction of γ-iron at high temperatures and pressures J. Appl. Phys. 65, 1795-1797.
9. Boness, D. A., Brown, J. M. & McMahan, A. K. 1986 The electronic thermodynamics of iron under Earth core conditions. Phys. Earth Planet. Inter. 42, 227-240.
10. Brown, J. M. & McQueen, R. G. 1986 Phase transitions, Grüneisen parameter, and elasticity for shocked iron between 77 GPa and 400 GPa. J. Geophys. Res. 91, 7485-7494.
11. Duffy, T. S. & Ahrens, T. J. 1994a The temperature sensitivity of elastic-wave velocity at high-pressure - New results for molybdenum. Geophys. Res. Lett. 21, 473-476.
12. Duffy, T. S. & Ahrens, T. J. 1994b Dynamic-response of molybdenum shock-compressed at 1400°C. J. Appl. Phys. 76, 835-842.
13. Falzone, A. J. & Stacey, F. D. 1980 Second-order elasticity theory: explanation for the high Poisson's ratio of the inner core. Phys. Earth Planet. Inter. 21, 371-377.
14. Huang, E., Bassett, W. A. & Tao, P. 1987 Pressure-temperature-volume relationship for hexagonal close packed iron determined by synchrotron radiation. J. Geophys. Res. 92, 8129-8135.
15. Kerley, G. I. 1993 Multiphase equation of state for iron. Sandia report, SAND93-0027.
16. 0.2 alloy to 260 GPa: implications for composition of the core. J. Geophys. Res. 95, 21737-21742.
17. Matsui, M. 1992 Computer simulation of the structural and physical properties of iron under ultra high pressures and high temperatures. Central Core Earth 2, 79-82.
18. Miller, G. H., Ahrens, T. J. & Stolper, E. M. 1988 The equation of state of molybdenum at 1400°C. J. Appl. Phys. 63, 4469-4475.
19. Nasch, P. M., Manghnani, M. H. & Secco, R. A. 1994 Sound-velocity measurements in liquid-iron by ultrasonic interferometry. J. Geophys. Res. 99, 4285-4291.
20. 5 Pascals) pressure and at higher temperatures. U.S. Geol. Surv. Bull. 1452.
21. Saxena, S. K., Shen, G. & Lazor, P. 1993 Experimental evidence for a new iron phase and implications for Earth's core. Science 260, 1312-1314.
22. Saxena, S. K., Shen, G. & Lazor, P. 1994 Temperatures in Earth's core based on melting and phase transformation experiments on iron. Science 264, 405-407.
23. Song, X. & Ahrens, T. J. 1994 Pressure-temperature range of reactions between liquid iron in the outer core and mantle silicates. Geophys. Res. Lett. 21, 153-156.
24. Stixrude, L. & Cohen, R. E. 1995 Constraints on the crystalline structure of the inner core: mechanical instability of BCC iron at high pressure. Geophys. Res. Lett. 22, 125-128.
25. Williams, Q., Knittle, E. & Jeanloz, R. 1991 The high-pressure melting curve of iron - a technical discussion. J. Geophys. Res. 96, 2171-2181.
26. Yoo, C. S., Holmes, N. C., Ross, M., Webb, D. J. & Pike, C. 1993 Shock temperatures and melting of iron at Earth core conditions. Phys. Rev. Lett. 70, 3931-3934.