Martensitic fcc-to-hcp Transformation Observed in Xenon at High Pressure

Journal Article · Mon May 14 00:00:00 EDT 2001 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.86.4552· OSTI ID:40205795

Cynn, H; Yoo, C S; Baer, B; Iota-Herbei, V; McMahan, A K; Nicol, M; Carlson, S

Angle-resolved x-ray diffraction patterns of Xe to 127GPa indicate that the fcc-to-hcp transition occurs martensitically between 3 and 70GPa in diamond-anvil cells without an intermediate phase. These data also reveal that the transition occurs by the introduction of stacking disorder in the fcc lattice at low pressure, which grows into hcp domains with increasing pressure. The small energy difference between the hcp and the fcc structures may allow the two phases to coexist over a wide pressure range. Evidence of similar stacking disorder and incipient growth of an hcp phase are also observed in solid Kr.

• Sponsoring Organization: (US)
• OSTI ID: 40205795
• Journal Information: Physical Review Letters, Vol. 86, Issue 20; Other Information: DOI: 10.1103/PhysRevLett.86.4552; Othernumber: PRLTAO000086000020004552000001; 022121PRL; PBD: 14 May 2001; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FCC LATTICES
TRANSFORMATIONS
XENON
X-RAY DIFFRACTION