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Stinton, GW; Macleod, SG; Cynn, H; Errandonea, D; Evans, WJ; Proctor, JE; Meng, Y; McMahon, MI
Publisher: American Physical Society
Languages: English
Types: Article
Subjects:
The phase diagram of magnesium has been investigated to 211 GPa at 300 K, and to 105 GPa at 4500 K, by using a combination of x-ray diffraction and resistive and laser heating. The ambient pressure hcp structure is found to start transforming to the bcc structure at ∼45 GPa, with a large region of phase-coexistence that becomes smaller at higher temperatures. The bcc phase is stable to the highest pressures reached. The hcp-bcc phase boundary has been studied on both compression and decompression, and its slope is found to be negative and steeper than calculations have previously predicted. The laser-heating studies extend the melting curve of magnesium to 105 GPa and suggest that, at the highest pressures, the melting temperature increases more rapidly with pressure than previously reported. Finally, we observe some evidence of a new phase in the region of 10 GPa and 1200 K, where previous studies have reported a double-hexagonal-close-packed (dhcp) phase. However, the additional diffraction peaks we observe cannot be accounted for by the dhcp phase alone.
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    • 2014/AWE. Published with permission of the Controller of Her Britannic Majesty's Stationery Office. M.I.M. is grateful to A.W.E. Aldermaston for the award of a William Penney Fellowship. D.E. thanks the financial support of the Spanish MINECO under Grant No. MAT2013-46649-C04-01 and by Generalitat Valenciana and Grant No. ACOMP/2014/243. We would like to thank Heribert Wilhelm and Annette Kleppe at I15 at the Diamond Light Source for their support.
    • [1] A. K. McMahan, Physica B+C (Amsterdam) 139, 31 (1986).
    • [2] J. D. Althoff, P. B. Allen, R. M. Wentzcovitch, and J. A. Moriarty, Phys. Rev. B 48, 13253 (1993).
    • [3] R. Ahuja, O. Eriksson, J. M. Wills, and B. Johansson, Phys. Rev. Lett. 75, 3473 (1995).
    • [4] J. A. Moriarty and J. D. Althoff, Phys. Rev. B 51, 5609 (1995).
    • [5] G. R. Chavarria, Phys. Lett. A 336, 210 (2005).
    • [6] S. Mehta, G. D. Price, and D. Alfe`, J. Chem. Phys. 125, 194507 (2006).
    • [7] Q. Liu, C. Fan, and R. Zhang, J. Appl. Phys. 105, 123505 (2009).
    • [8] C. J. Pickard and R. J. Needs, Nat. Mater. 9, 624 (2010).
    • [9] Y. Yao and D. D. Klug, J. Phys.: Condens. Matter 24, 265401 (2012).
    • [10] N. Nishimura, K. Kinoshita, Y. Akahama, and H. Kawamura, in Procedings of the 20th AIRAPT International Conference on High Pressure Science and Technology (Mineralogical Soc. America, Karlsruhe, 2005), pp. T10-P054.
    • [11] H. Olijnyk and W. B. Holzapfel, Phys. Rev. B 31, 4682 (1985).
    • [12] A. K. McMahan and J. A. Moriarty, Phys. Rev. B 27, 3235 (1983).
    • [13] P. Li, G. Gao, Y. Wang, and Y. Ma, J. Phys. Chem. C 114, 21745 (2010).
    • [14] G. C. Kennedy and R. C. Newton, Solids Under Pressure (McGraw-Hill, New York, 1963).
    • [15] D. Errandonea, J. Appl. Phys. 108, 033517 (2010).
    • [16] D. Errandonea, R. Boehler, and M. Ross, Phys. Rev. B 65, 012108 (2001).
    • [17] There is a typographical error in Ref. 16, where the gradient of the melting curve is stated to be 6 K/GPa. The true value of 45 K/GPa is clear from Fig. 1 of Ref 16.
    • [18] D. Milathianaki, D. C. Swift, J. Hawreliak, B. S. El-Dasher, J. M. McNaney, H. E. Lorenzana, and T. Ditmire, Phys. Rev. B 86, 014101 (2012).
    • [19] D. Errandonea, Y. Meng, D. Ha¨usermann, and T. Uchida, J. Phys.: Condens. Matter 15, 1277 (2003).
    • [20] H. Cynn, W. Evans, C. S. Yoo, Y. Ohishi, N. Sata, and O. Shimomura, APS March Meeting, 22-26 March 2004, Sec. W20.009 (2004).
    • [21] R. Boehler and K. De Hantsetters, High Pressure Res. 24, 391 (2004).
    • [22] Z. Jenei, H. Cynn, K. Visbeck, and W. J. Evans, Rev. Sci. Instrum. 84, 095114 (2013).
    • [23] G. Y. Shen, M. L. Rivers, Y. B. Wang, and S. R. Sutton, Rev. Sci. Instrum. 72, 1273 (2001).
    • [24] R. Boehler, H. G. Musshoff, R. Ditz, G. Aquilanti, and A. Trapananti, Rev. Sci. Instrum. 80, 045103 (2009).
    • [25] A. P. Hammersley, S. O. Svensson, M. Hanfland, A. N. Fitch, and D. Ha¨usermann, High Pressure Res. 14, 235 (1996).
    • [26] A. Lebail, H. Duroy, and J. L. Fourquet, Mater. Res. Bull. 23, 447 (1988).
    • [27] A. Coelho, Topas Academic Version 4.1. Computer Software (Topas Academic, Coelho Software, Brisbane, 2007).
    • [28] H. Cynn (unpublished).
    • [29] A. K. Singh and T. Kenichi, J. Appl. Phys. 90, 3269 (2001).
    • [30] T. Kenichi and A. K. Singh, Phys. Rev. B 73, 224119 (2006).
    • [31] S. Speziale, C.-S. Zha, T. S. Duffy, R. J. Hemley, and H.-K. Mao, Geophys. Res. 106, 515 (2001).
    • [32] Y. Tange, Y. Nishihara, and T. Tsuchiya, J. Geophys. Res. 114, B03208 (2009).
    • [33] P. Vinet, J. Ferrante, J. H. Rose, and J. R. Smith, Geophys. Res. 92, 9319 (1987).
    • [34] R. Angel, in High-Temperature and High-Pressure Crystal Chemistry, Vol. 41 of Reviews In Mineralogy & Geochemistry (Mineralogical Society of America, Washington D.C., 2000), pp. 35-59.
    • [35] A. Lazicki, A. Dewaele, P. Loubeyre, and M. Mezouar, Phys. Rev. B 86, 174118 (2012).
    • [36] C. L. Guillaume, E. Gregoryanz, O. Degtyareva, M. I. McMahon, M. Hanfland, S. Evans, M. Guthrie, S. V. Sinogeikin, and H.-K. Mao, Nat. Phys. 7, 211 (2011).
    • [37] D. Santamar´ıa-Pe´rez, M. Ross, D. Errandonea, G. D. Mukherjee, M. Mezouar, and R. Boehler, J. Chem. Phys. 130, 124509 (2009).
    • [38] S. Anzellini, A. Dewaele, M. Mezouar, P. Loubeyre, and G. Morard, Science 340, 464 (2013).
    • [39] P. A. Urtiew and R. Grover, J. Appl. Phys. 48, 1122 (1977).
    • [40] L. J. Slutsky and C. W. Garland, Phys. Rev. 107, 972 (1957).
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