Pressure-Induced Structural Phase Transitions in Solid Xenon
1987; American Physical Society; Volume: 59; Issue: 23 Linguagem: Inglês
10.1103/physrevlett.59.2670
ISSN1092-0145
AutoresA. P. Jephcoat, H. K. Mao, L. W. Finger, D. E. Cox, Russell J. Hemley, Chang‐Sheng Zha,
Tópico(s)Crystal Structures and Properties
ResumoPressure-induced structural phase transitions have been observed in solid xenon by high-pressure x-ray diffraction methods up to 137 GPa (1.37 Mbar). The face-centered cubic structure is unstable above 14 GPa and transforms to an intermediate, close-packed phase. Above 75 GPa a further transition takes place to the hexagonal close-packed structure which remains stable to at least 137 GPa. At this pressure, where $V=10.5\ifmmode\pm\else\textpm\fi{}0.2$ ${\mathrm{cm}}^{3}$/mol ($\frac{V}{{V}_{01}}=0.30$), there is no evidence for band-gap closure.
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