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Structural transformation of compressed solid Ar: An x-ray diffraction study to 114 GPa
被引:145
|作者:
Errandonea, D
[1
]
Boehler, R
Japel, S
Mezouar, M
Benedetti, LR
机构:
[1] Univ Valencia, Dept Fis Aplicada, ICMUV, E-46100 Burjassot, Spain
[2] Max Planck Inst Chem, D-55020 Mainz, Germany
[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France
来源:
关键词:
D O I:
10.1103/PhysRevB.73.092106
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Room temperature angle-dispersive x-ray diffraction measurements on solid Ar up to 114 GPa reveal evidence of a structural phase transformation after stress relaxation by laser heating. Beyond 49.6 GPa, Ar exhibits the coexistence of fcc and hcp phases with an increasing hcp/fcc ratio, similar to the observation made recently on krypton and xenon. From the present results, we estimate the fcc-to-hcp transition to be completed at 300 GPa.
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