Phys. Rev. Lett. 94, 185502 (2005) [4 pages]Melting of Dense Sodium
High-pressure high-temperature synchrotron diffraction measurements reveal a maximum on the melting curve of Na in the bcc phase at ∼31 GPa and 1000 K and a steep decrease in melting temperature in its fcc phase. The results extend the melting curve by an order of magnitude up to 130 GPa. Above 103 GPa, Na crystallizes in a sequence of phases with complex structures with unusually low melting temperatures, reaching 300 K at 118 GPa, and an increased melting temperature is observed with further increases in pressure. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.185502
DOI:
10.1103/PhysRevLett.94.185502
PACS:
61.10.Nz, 61.20.Ne, 62.50.+p, 64.70.Dv
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